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(-) Description

Title :  STRUCTURE OF THE YEAST CYTOCHROME BC1 COMPLEX CO-CRYSTALLIZED WITH AN ANTIBODY FV-FRAGMENT
 
Authors :  C. Hunte, J. Koepke, C. Lange, T. Rossmanith, H. Michel
Date :  12 May 00  (Deposition) - 16 May 01  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.30
Chains :  Asym. Unit :  A,B,C,D,E,F,G,H,I,X,Y
Biol. Unit 1:  A (2x),B (2x),C (2x),D (2x),E (2x),F (2x),G (2x),H (2x),I (2x),X (1x),Y (1x)
Keywords :  Cytochrome Bc1 Complex, Complex Iii, Qcr, Mitochondria, Yeast, Antibody Fv-Fragment, Stigmatellin, Coenzyme Q6, Matrix Processing Peptidases, Ubiquinone, Electron Transfer, Proton Transfer, Q-Cycle, Oxidoreductase/Electron Transport Complex (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  C. Hunte, J. Koepke, C. Lange, T. Rossmanith, H. Michel
Structure At 2. 3 A Resolution Of The Cytochrome Bc(1) Complex From The Yeast Saccharomyces Cerevisiae Co-Crystallized With An Antibody Fv Fragment.
Structure Fold. Des. V. 8 669 2000
PubMed-ID: 10873857  |  Reference-DOI: 10.1016/S0969-2126(00)00152-0
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - UBIQUINOL-CYTOCHROME C REDUCTASE COMPLEX CORE PROTEIN I
    ChainsA
    EC Number1.10.2.2
    EngineeredYES
    FragmentRESIDUES 24-457
    OrganelleMITOCHONDRIA
    Organism CommonBAKER'S YEAST
    Organism ScientificSACCHAROMYCES CEREVISIAE
    Organism Taxid4932
    Other DetailsMITOCHONDRIA, YEAST, SACCHAROMYCES CEREVISIAE
 
Molecule 2 - UBIQUINOL-CYTOCHROME C REDUCTASE COMPLEX CORE PROTEIN 2
    ChainsB
    EC Number1.10.2.2
    EngineeredYES
    FragmentRESIDUES 17-368
    OrganelleMITOCHONDRIA
    Organism CommonBAKER'S YEAST
    Organism ScientificSACCHAROMYCES CEREVISIAE
    Organism Taxid4932
    Other DetailsFV-FRAGMENT DERIVED FROM THE MURINE MONOCLONAL ANTIBODY 18E11, EXPRESSION SYSTEM ESCHERICHIA COLI
 
Molecule 3 - CYTOCHROME B
    ChainsC
    EngineeredYES
    OrganelleMITOCHONDRIA
    Organism CommonBAKER'S YEAST
    Organism ScientificSACCHAROMYCES CEREVISIAE
    Organism Taxid4932
 
Molecule 4 - CYTOCHROME C1
    ChainsD
    EngineeredYES
    FragmentRESIDUES 62-306
    OrganelleMITOCHONDRIA
    Organism CommonBAKER'S YEAST
    Organism ScientificSACCHAROMYCES CEREVISIAE
    Organism Taxid4932
 
Molecule 5 - UBIQUINOL-CYTOCHROME C REDUCTASE IRON-SULFUR SUBUNIT
    ChainsE
    EC Number1.10.2.2
    EngineeredYES
    FragmentRESIDUES 31-215
    OrganelleMITOCHONDRIA
    Organism CommonBAKER'S YEAST
    Organism ScientificSACCHAROMYCES CEREVISIAE
    Organism Taxid4932
 
Molecule 6 - UBIQUINOL-CYTOCHROME C REDUCTASE COMPLEX 17 KD PROTEIN
    ChainsH
    EC Number1.10.2.2
    EngineeredYES
    FragmentRESIDUES 74-147
    OrganelleMITOCHONDRIA
    Organism CommonBAKER'S YEAST
    Organism ScientificSACCHAROMYCES CEREVISIAE
    Organism Taxid4932
 
Molecule 7 - UBIQUINOL-CYTOCHROME C REDUCTASE COMPLEX 14 KD PROTEIN
    ChainsF
    EC Number1.10.2.2
    EngineeredYES
    FragmentRESIDUES 3-127
    OrganelleMITOCHONDRIA
    Organism CommonBAKER'S YEAST
    Organism ScientificSACCHAROMYCES CEREVISIAE
    Organism Taxid4932
 
Molecule 8 - UBIQUINOL-CYTOCHROME C REDUCTASE COMPLEX UBIQUINONE-BINDING PROTEIN QP-C
    ChainsG
    EC Number1.10.2.2
    EngineeredYES
    FragmentRESIDUES 2-94
    OrganelleMITOCHONDRIA
    Organism CommonBAKER'S YEAST
    Organism ScientificSACCHAROMYCES CEREVISIAE
    Organism Taxid4932
 
Molecule 9 - UBIQUINOL-CYTOCHROME C REDUCTASE COMPLEX 7.3 KD PROTEIN
    ChainsI
    EC Number1.10.2.2
    EngineeredYES
    FragmentRESIDUES 4-58
    OrganelleMITOCHONDRIA
    Organism CommonBAKER'S YEAST
    Organism ScientificSACCHAROMYCES CEREVISIAE
    Organism Taxid4932
 
Molecule 10 - HEAVY CHAIN (VH) OF FV-FRAGMENT
    ChainsX
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System Taxid562
    Organism CommonHOUSE MOUSE
    Organism ScientificMUS MUSCULUS
    Organism Taxid10090
 
Molecule 11 - LIGHT CHAIN (VL) OF FV-FRAGMENT
    ChainsY
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System Taxid562
    Organism CommonHOUSE MOUSE
    Organism ScientificMUS MUSCULUS
    Organism Taxid10090

 Structural Features

(-) Chains, Units

  1234567891011
Asymmetric Unit ABCDEFGHIXY
Biological Unit 1 (2x)A (2x)B (2x)C (2x)D (2x)E (2x)F (2x)G (2x)H (2x)I (2x)X (1x)Y (1x)

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (4, 6)

Asymmetric Unit (4, 6)
No.NameCountTypeFull Name
1FES1Ligand/IonFE2/S2 (INORGANIC) CLUSTER
2HEM3Ligand/IonPROTOPORPHYRIN IX CONTAINING FE
3SMA1Ligand/IonSTIGMATELLIN A
4UQ61Ligand/Ion5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL
Biological Unit 1 (0, 0)
No.NameCountTypeFull Name
1FES-1Ligand/IonFE2/S2 (INORGANIC) CLUSTER
2HEM-1Ligand/IonPROTOPORPHYRIN IX CONTAINING FE
3SMA-1Ligand/IonSTIGMATELLIN A
4UQ6-1Ligand/Ion5-(3,7,11,15,19,23-HEXAMETHYL-TETRACOSA-2,6,10,14,18,22-HEXAENYL)-2,3-DIMETHOXY-6-METHYL-BENZENE-1,4-DIOL

(-) Sites  (6, 6)

Asymmetric Unit (6, 6)
No.NameEvidenceResiduesDescription
1AC1SOFTWARELEU C:40 , GLN C:43 , GLY C:47 , ILE C:48 , MET C:50 , ALA C:51 , ARG C:79 , HIS C:82 , ALA C:83 , PHE C:89 , THR C:127 , ALA C:128 , GLY C:131 , VAL C:135 , HIS C:183 , TYR C:184 , PRO C:187 , HOH C:527 , HOH C:539BINDING SITE FOR RESIDUE HEM C 401
2AC2SOFTWARETRP C:30 , GLY C:33 , LEU C:36 , HIS C:96 , LYS C:99 , SER C:105 , LEU C:113 , GLY C:117 , VAL C:118 , ILE C:120 , HIS C:197 , LEU C:201 , SER C:206 , SER C:207 , UQ6 C:506 , HOH C:508 , HOH C:528BINDING SITE FOR RESIDUE HEM C 402
3AC3SOFTWAREVAL D:100 , CYS D:101 , CYS D:104 , HIS D:105 , ASN D:169 , PRO D:175 , ARG D:184 , TYR D:190 , ILE D:191 , PHE D:218 , ILE D:223 , ALA D:224 , MET D:225 , VAL D:228 , HOH D:317 , HOH D:372BINDING SITE FOR RESIDUE HEM D 3
4AC4SOFTWARECYS E:159 , HIS E:161 , LEU E:162 , CYS E:178 , HIS E:181 , SER E:183BINDING SITE FOR RESIDUE FES E 4
5AC5SOFTWAREILE C:125 , PHE C:129 , VAL C:146 , ILE C:269 , PRO C:271 , GLU C:272 , LEU C:275 , TYR C:279 , MET C:295 , PHE C:296 , HOH C:548 , HIS E:181BINDING SITE FOR RESIDUE SMA C 505
6AC6SOFTWARETYR C:16 , GLN C:22 , LEU C:40 , ILE C:44 , PHE C:49 , MET C:52 , LEU C:198 , LEU C:201 , SER C:206 , MET C:221 , HEM C:402BINDING SITE FOR RESIDUE UQ6 C 506

(-) SS Bonds  (4, 4)

Asymmetric Unit
No.Residues
1E:164 -E:180
2H:101 -H:123
3X:22 -X:96
4Y:23 -Y:88

(-) Cis Peptide Bonds  (3, 3)

Asymmetric Unit
No.Residues
1Ser C:108 -Pro C:109
2Thr Y:7 -Pro Y:8
3Phe Y:94 -Pro Y:95

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (1, 1)

Asymmetric Unit (1, 1)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_CYB_YEAST_001 *G131SCYB_YEAST  ---  ---CG131S
   * ID not provided by source

  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)
Biological Unit 1 (1, 2)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_CYB_YEAST_001 *G131SCYB_YEAST  ---  ---CG131S
   * ID not provided by source

  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

(-) PROSITE Motifs  (5, 5)

Asymmetric Unit (5, 5)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1CYTB_NTERPS51002 Cytochrome b/b6 N-terminal region profile.CYB_YEAST1-210  1C:1-210
2INSULINASEPS00143 Insulinase family, zinc-binding region signature.QCR2_YEAST37-59  1B:37-59
3CYTCPS51007 Cytochrome c family profile.CY1_YEAST88-241  1D:88-241
4RIESKEPS51296 Rieske [2Fe-2S] iron-sulfur domain profile.UCRI_YEAST123-214  1E:123-214
5CYTB_CTERPS51003 Cytochrome b/b6 C-terminal region profile.CYB_YEAST211-381  1C:211-381
Biological Unit 1 (5, 5)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1CYTB_NTERPS51002 Cytochrome b/b6 N-terminal region profile.CYB_YEAST1-210  1C:1-210
2INSULINASEPS00143 Insulinase family, zinc-binding region signature.QCR2_YEAST37-59  1B:37-59
3CYTCPS51007 Cytochrome c family profile.CY1_YEAST88-241  1D:88-241
4RIESKEPS51296 Rieske [2Fe-2S] iron-sulfur domain profile.UCRI_YEAST123-214  1E:123-214
5CYTB_CTERPS51003 Cytochrome b/b6 C-terminal region profile.CYB_YEAST211-381  1C:211-381

(-) Exons   (14, 14)

Asymmetric Unit (14, 14)
 ENSEMBLUniProtKBPDB
No.Transcript IDExonExon IDGenome LocationLengthIDLocationLengthCountLocationLength
1.1Q01051Q0105.1Mito:36540-36954415CYB_YEAST1-1391391C:1-139139
1.2Q01052Q0105.2Mito:37723-3773614CYB_YEAST139-14351C:139-1435
1.3Q01053Q0105.3Mito:39141-3921777CYB_YEAST144-169261C:144-16926
1.4Q01054Q0105.4Mito:40841-41090250CYB_YEAST169-252841C:169-25284
1.5Q01055Q0105.5Mito:42508-4255851CYB_YEAST253-269171C:253-26917
1.6Q01056Q0105.6Mito:43297-43647351CYB_YEAST270-3851161C:270-385116

2.1YBL045C1YBL045C.1II:135519-1341461374QCR1_YEAST1-4574571A:27-456 (gaps)431

3.1YDR529C1YDR529C.1IV:1496541-1496158384QCR7_YEAST1-1271271F:3-127125

4.1YEL024W1YEL024W.1V:107260-107907648UCRI_YEAST1-2152151E:31-215185

5.1YFR033C1YFR033C.1VI:224757-224314444QCR6_YEAST1-1471471H:74-14774

6.1YGR183C1YGR183C.1VII:859481-8594793QCR9_YEAST1-110--
6.2YGR183C2YGR183C.2VII:859265-859068198QCR9_YEAST2-66651I:4-5855

7.1YJL166W1YJL166W.1X:106428-106712285QCR8_YEAST1-94941G:2-9493

8.1YOR065W1YOR065W.1XV:447441-448370930CY1_YEAST1-3093091D:62-306245

9.1YPR191W1YPR191W.1XVI:919377-9204831107QCR2_YEAST1-3683681B:17-368352

(-) Sequences/Alignments

Asymmetric Unit
   Reformat: Number of residues per line =  ('0' or empty: single-line sequence representation)
  Number of residues per labelling interval =   
  UniProt sequence: complete  aligned part    
   Show mapping: SCOP domains CATH domains Pfam domains Secondary structure (by author)
SAPs(SNPs) PROSITE motifs Exons
(details for a mapped element are shown in a popup box when the mouse pointer rests over it)
Chain A from PDB  Type:PROTEIN  Length:430
 aligned with QCR1_YEAST | P07256 from UniProtKB/Swiss-Prot  Length:457

    Alignment length:431
                                    36        46        56        66        76        86        96       106       116       126       136       146       156       166       176       186       196       206       216       226       236       246       256       266       276       286       296       306       316       326       336       346       356       366       376       386       396       406       416       426       436       446       456 
           QCR1_YEAST    27 AEVTQLSNGIVVATEHNPSAHTASVGVVFGSGAANENPYNNGVSNLWKNIFLSKENSAVAAKEGLALSSNISRDFQSYIVSSLPGSTDKSLDFLNQSFIQQKANLLSSSNFEATKKSVLKQVQDFEENDHPNRVLEHLHSTAFQNTPLSLPTRGTLESLENLVVADLESFANNHFLNSNAVVVGTGNIKHEDLVNSIESKNLSLQTGTKPVLKKKAAFLGSEVRLRDDTLPKAWISLAVEGEPVNSPNYFVAKLAAQIFGSYNAFEPASRLQGIKLLDNIQEYQLCDNFNHFSLSYKDSGLWGFSTATRNVTMIDDLIHFTLKQWNRLTISVTDTEVERAKSLLKLQLGQLYESGNPVNDANLLGAEVLIKGSKLSLGEAFKKIDAITVKDVKAWAGKRLWDQDIAIAGTGQIEGLLDYMRIRSDMSMMRW 457
               SCOP domains d1ezva1 A:27-239 C ytochrome bc1 core subunit 1                                                                                                                                                                       d1ezva2 A:240-456 Cytochrome bc1 core subunit 1                                                                                                                                                                           SCOP domains
               CATH domains 1ezvA01 A:27-227 C ytochrome Bc1 Complex; Chain A, domain 1                                                                                                                                               ------1ezvA02 A:234-456 Cytochrome Bc1 Complex; Chain A, domain 1                                                                                                                                                                     CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...eeee...eeeeee..-...eeeeeee..hhhhh.....hhhhhhhhhhhhhhhhhhhhhh..eeeeee....eeeeeeehhhhhhhhhhhhhhhhh.......hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh..hhhhh....hhhhhh..hhhhhhhhhhhhh....eeeeeee..hhhhhhhhhhhh....................eeeeee......eeeeeeee.......hhhhhhhhhhhhheee....hhhhh..hhhhhhhh.....eeeeeeee....eeeeeeeee....hhhhhhhhhhhhhhhhhhh.hhhhhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhh...hhhhhhhhhhh.hhhhhhhhhhhhh.....eeeeee......hhhhhhhh...... Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
               Transcript 2 Exon 2.1  PDB: A:27-456 (gaps) UniProt: 1-457 [INCOMPLETE]                                                                                                                                                                                                                                                                                                                                                                                      Transcript 2
                 1ezv A  27 AEVTQLSNGIVVATEHNP-AHTASVGVVFGSGAANENPYNNGVSNLWKNIFLSKENSAVAAKEGLALSSNISRDFQSYIVSSLPGSTDKSLDFLNQSFIQQKANLLSSSNFEATKKSVLKQVQDFEDNDHPNRVLEHLHSTAFQNTPLSLPTRGTLESLENLVVADLESFANNHFLNSNAVVVGTGNIKHEDLVNSIESKNLSLQTGTKPVLKKKAAFLGSEVRLRDDTLPKAWISLAVEGEPVNSPNYFVAKLAAQIFGSYNAFEPASRLQGIKLLDNIQEYQLCDNFNHFSLSYKDSGLWGFSTATRNVTMIDDLIHFTLKQWNRLTISVTDTEVERAKSLLKLQLGQLYESGNPVNDANLLGAEVLIKGSKLSLGEAFKKIDAITVKDVKAWAGKRLWDQDIAIAGTGQIEGLLDYMRIRSDMSMMRW 456
                                    36       |45        55        65        75        85        95       105       115       125       135       145       155       165       175       185       195       205       215       225       235       245       255       265       275       285       295       305       315       325       335       345       355       365       375       385       395       405       415       425       435       445       455 
                                            44 |                                                                                                                                                                                                                                                                                                                                                                                                                           
                                              45                                                                                                                                                                                                                                                                                                                                                                                                                           

Chain B from PDB  Type:PROTEIN  Length:352
 aligned with QCR2_YEAST | P07257 from UniProtKB/Swiss-Prot  Length:368

    Alignment length:352
                                    26        36        46        56        66        76        86        96       106       116       126       136       146       156       166       176       186       196       206       216       226       236       246       256       266       276       286       296       306       316       326       336       346       356       366  
           QCR2_YEAST    17 LTVSARDAPTKISTLAVKVHGGSRYATKDGVAHLLNRFNFQNTNTRSALKLVRESELLGGTFKSTLDREYITLKATFLKDDLPYYVNALADVLYKTAFKPHELTESVLPAARYDYAVAEQCPVKSAEDQLYAITFRKGLGNPLLYDGVERVSLQDIKDFADKVYTKENLEVSGENVVEADLKRFVDESLLSTLPAGKSLVSKSEPKFFLGEENRVRFIGDSVAAIGIPVNKASLAQYEVLANYLTSALSELSGLISSAKLDKFTDGGLFTLFVRDQDSAVVSSNIKKIVADLKKGKDLSPAINYTKLKNAVQNESVSSPIELNFDAVKDFKLGKFNYVAVGDVSNLPYLDEL 368
               SCOP domains d1ezvb1 B:17-218 Cytochrome bc1 core subunit 2                                                                                                                                                            d1ezvb2 B:219-368 Cytochrome bc1 core subunit 2                                                                                                        SCOP domains
               CATH domains 1ezvB01 B:17-227 Cytochrome Bc1 Complex; Chain A, domain 1                                                                                                                                                         ------1ezvB02 B:234-368 Cytochrome Bc1 Complex; Chain A, domain 1                                                                             CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...........eeeeeeee..........hhhhhhhhhh.......hhhhhhhhhhhhheeeeeee....eeeeeeee..hhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhhhhh.hhhhhhhhhhhhhhh................hhhhhhhhhhhhhhhh.eee.....hhhhhhhhhhh........................eeeee....eeeeeeeee...hhhhhhhhhhhhh...hhhhhhh.eeeeee....eeeeeeeee.hhhhhhhhhhhhhhhhhh........hhhhhhh..........................eeeeeehhhhh...... Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (2) --------------------INSULINASE  PDB: B:37-5--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (2)
               Transcript 9 Exon 9.1  PDB: B:17-368 UniProt: 1-368 [INCOMPLETE]                                                                                                                                                                                                                                                                                                              Transcript 9
                 1ezv B  17 LTVSARDAPTKISTLAVKVHGGSRYATKDGVAHLLNRFNFQNTNTRSALKLVRESELLGGTFKSTLDREYITLKATFLKDDLPYYVNALADVLYKTAFKPHELTESVLPAARYDYAVAEQCPVKSAEDQLYAITFRKGLGNPLLYDGVERVSLQDIKDFADKVYTKENLEVSGENVVEADLKRFVDESLLSTLPAGKSLVSKSEPKFFLGEENRVRFIGDSVAAIGIPVNKASLAQYEVLANYLTSALSELSGLISSAKLDKFTDGGLFTLFVRDQDSAVVSSNIKKIVADLKKGKDLSPAINYTKLKNAVQNESVSSPIELNFDAVKDFKLGKFNYVAVGDVSNLPYLDEL 368
                                    26        36        46        56        66        76        86        96       106       116       126       136       146       156       166       176       186       196       206       216       226       236       246       256       266       276       286       296       306       316       326       336       346       356       366  

Chain C from PDB  Type:PROTEIN  Length:385
 aligned with CYB_YEAST | P00163 from UniProtKB/Swiss-Prot  Length:385

    Alignment length:385
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330       340       350       360       370       380     
            CYB_YEAST     1 MAFRKSNVYLSLVNSYIIDSPQPSSINYWWNMGSLLGLCLVIQIVTGIFMAMHYSSNIELAFSSVEHIMRDVHNGYILRYLHANGASFFFMVMFMHMAKGLYYGSYRSPRVTLWNVGVIIFILTIATAFLGYCCVYGQMSHWGATVITNLFSAIPFVGNDIVSWLWGGFSVSNPTIQRFFALHYLVPFIIAAMVIMHLMALHIHGSSNPLGITGNLDRIPMHSYFIFKDLVTVFLFMLILALFVFYSPNTLGHPDNYIPGNPLVTPASIVPEWYLLPFYAILRSIPDKLLGVITMFAAILVLLVLPFTDRSVVRGNTFKVLSKFFFFIFVFNFVLLGQIGACHVEVPYVLMGQIATFIYFAYFLIIVPVISTIENVLFYIGRVNK 385
               SCOP domains d1ezvc3 C:1-261 Mitochondrial cytochrome b subunit, N-terminal domain                                                                                                                                                                                                d1ezvc2 C:262-385 Mitochondrial cytochrome b subunit, C-terminal domain                                                      SCOP domains
               CATH domains 1ezvC00 C:1-385 Cytochrome Bc1 Complex; Chain C                                                                                                                                                                                                                                                                                                                                                   CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .hhhhhhhhhhhhhhhhh..eee...hhhhhhhhhhhhhhhhhhhhhhhhhh.......hhhhhhhhhhhh..hhhhhhhhhhhhhhhhhhhhhhhhhhhhhh......hhhhhhhhhhhhhhhhhhhhhhhhhh.hhhhhhhhhhhhhhhhhh..hhhhhhhhhhh....hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh............eee..hhhhhhhhhhhhhhhhhhhhhhhhh.....hhhhhh.............hhhhhhhhhhhhh..hhhhhhhhhhhhhhh..hhhhhh.........hhhhhhhhhhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.... Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------S-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE CYTB_NTER  PDB: C:1-210 UniProt: 1-210                                                                                                                                                                            CYTB_CTER  PDB: C:211-381 UniProt: 211-381                                                                                                                                 ---- PROSITE
           Transcript 1 (1) Exon 1.1  PDB: C:1-139 UniProt: 1-139                                                                                                      ----Exon 1.3  PDB: C:144-169  -----------------------------------------------------------------------------------Exon 1.5         Exon 1.6  PDB: C:270-385 UniProt: 270-385                                                                            Transcript 1 (1)
           Transcript 1 (2) ------------------------------------------------------------------------------------------------------------------------------------------1.2  -------------------------Exon 1.4  PDB: C:169-252 UniProt: 169-252                                           ------------------------------------------------------------------------------------------------------------------------------------- Transcript 1 (2)
                 1ezv C   1 MAFRKSNVYLSLVNSYIIDSPQPSSINYWWNMGSLLGLCLVIQIVTGIFMAMHYSSNIELAFSSVEHIMRDVHNGYILRYLHANGASFFFMVMFMHMAKGLYYGSYRSPRVTLWNVGVIIFTLTIATAFLGYCCVYGQMSHWGATVITNLFSAIPFVGNDIVSWLWGGFSVSNPTIQRFFALHYLVPFIIAAMVIMHLMALHIHGSSNPLGITGNLDRIPMHSYFIFKDLVTVFLFMLILALFVFYSPNTLGHPDNYIPGNPLVTPASIVPEWYLLPFYAILRSIPDKLLGVITMFAAILVLLVLPFTDRSVVRGNTFKVLSKFFFFIFVFNFVLLGQIGACHVEVPYVLMGQIATFIYFAYFLIIVPVISTIENVLFYIGRVNK 385
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330       340       350       360       370       380     

Chain D from PDB  Type:PROTEIN  Length:245
 aligned with CY1_YEAST | P07143 from UniProtKB/Swiss-Prot  Length:309

    Alignment length:245
                                    71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241       251       261       271       281       291       301     
            CY1_YEAST    62 MTAAEHGLHAPAYAWSHNGPFETFDHASIRRGYQVYREVCAACHSLDRVAWRTLVGVSHTNEEVRNMAEEFEYDDEPDEQGNPKKRPGKLSDYIPGPYPNEQAARAANQGALPPDLSLIVKARHGGCDYIFSLLTGYPDEPPAGVALPPGSNYNPYFPGGSIAMARVLFDDMVEYEDGTPATTSQMAKDVTTFLNWCAEPEHDERKRLGLKTVIILSSLYLLSIWVKKFKWAGIKTRKFVFNPPK 306
               SCOP domains d1ezvd1 D:62-260 Cytochrome bc1 domain                                                                                                                                                                 d1ezvd2 D:261-306                              SCOP domains
               CATH domains ---1ezvD02 D:65-261 Cytochrome c                                                                                                                                                                        1ezvD01 D:262-306                             CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .hhhhhh.................hhhhhhhhhhhhhhhhhhh.......hhhh.....hhhhhhhhhhh.eee..........eee............hhhhhhhh.................hhhhhhhhhhh................ee.......ee...................hhhhhhhhhhhhhhhhhh.hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.eeee.... Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (2) --------------------------CYTC  PDB: D:88-241 UniProt: 88-241                                                                                                                       ----------------------------------------------------------------- PROSITE (2)
               Transcript 8 Exon 8.1  PDB: D:62-306 UniProt: 1-309 [INCOMPLETE]                                                                                                                                                                                                   Transcript 8
                 1ezv D  62 MTAAEHGLHAPAYAWSHNGPFETFDHASIRRGYQVYREVCAACHSLDRVAWRTLVGVSHTNEEVRNMAEEFEYDDEPDEQGNPKKRPGKLSDYIPGPYPNEQAARAANQGALPPDLSLIVKARHGGCDYIFSLLTGYPDEPPAGVALPPGSNYNPYFPGGSIAMARVLFDDMVEYEDGTPATTSQMAKDVTTFLNWCAEPEHDERKRLGLKTVIILSSLYLLSIWVKKFKWAGIKTRKFVFNPPK 306
                                    71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241       251       261       271       281       291       301     

Chain E from PDB  Type:PROTEIN  Length:185
 aligned with UCRI_YEAST | P08067 from UniProtKB/Swiss-Prot  Length:215

    Alignment length:185
                                    40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210     
           UCRI_YEAST    31 KSTYRTPNFDDVLKENNDADKGRSYAYFMVGAMGLLSSAGAKSTVETFISSMTATADVLAMAKVEVNLAAIPLGKNVVVKWQGKPVFIRHRTPHEIQEANSVDMSALKDPQTDADRVKDPQWLIMLGICTHLGCVPIGEAGDFGGWFCPCHGSHYDISGRIRKGPAPLNLEIPAYEFDGDKVIVG 215
               SCOP domains d1ezve2 E:31-86                                         d1ezve1 E:87-215 ISP subunit of the mitochondrial cytochrome bc1-complex, water-soluble domain                                    SCOP domains
               CATH domains 1ezvE01 E:31-85  [code=1.20.5.270, no name defined]    1ezvE02 E:86-215 'Rieske'-like iron-sulphur domains                                                                                CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...................hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh...hhhhh....eeee.hhh....eeeeee..eeeeeee.hhhhhhhhhhhhhhhh....hhhhhh....eeeee..........ee.......eee....eee.....eee...........eeee..eeee. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (2) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (2)
                PROSITE (3) --------------------------------------------------------------------------------------------RIESKE  PDB: E:123-214 UniProt: 123-214                                                     - PROSITE (3)
               Transcript 4 Exon 4.1  PDB: E:31-215 UniProt: 1-215 [INCOMPLETE]                                                                                                                                       Transcript 4
                 1ezv E  31 KSTYRTPNFDDVLKENNDADKGRSYAYFMVGAMGLLSSAGAKSTVETFISSMTATADVLAMAKVEVNLAAIPLGKNVVVKWQGKPVFIRHRTPHEIQEANSVDMSALKDPQTDADRVKDPQWLIMLGICTHLGCVPIGEAGDFGGWFCPCHGSHYDISGRIRKGPAPLNLEIPAYEFDGDKVIVG 215
                                    40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210     

Chain F from PDB  Type:PROTEIN  Length:125
 aligned with QCR7_YEAST | P00128 from UniProtKB/Swiss-Prot  Length:127

    Alignment length:125
                                    12        22        32        42        52        62        72        82        92       102       112       122     
           QCR7_YEAST     3 QSFTSIARIGDYILKSPVLSKLCVPVANQFINLAGYKKLGLKFDDLIAEENPIMQTALRRLPEDESYARAYRIIRAHQTELTHHLLPRNEWIKAQEDVPYLLPYILEAEAAAKEKDELDNIEVSK 127
               SCOP domains d1ezvf_ F: 14 kDa protein of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)                                        SCOP domains
               CATH domains 1ezvF00 F:3-127 Cytochrome Bc1 Complex; Chain F                                                                               CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.hhhhhh...hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh....hhhhh.........hhhhhhhhhhhhhhhhhhhh..... Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------------------- PROSITE
               Transcript 3 Exon 3.1  PDB: F:3-127 UniProt: 1-127 [INCOMPLETE]                                                                            Transcript 3
                 1ezv F   3 QSFTSIARIGDYILKSPVLSKLCVPVANQFINLAGYKKLGLKFDDLIAEENPIMQTALRRLPEDESYARAYRIIRAHQTELTHHLLPRNEWIKAQEDVPYLLPYILEAEAAAKEKDELDNIEVSK 127
                                    12        22        32        42        52        62        72        82        92       102       112       122     

Chain G from PDB  Type:PROTEIN  Length:93
 aligned with QCR8_YEAST | P08525 from UniProtKB/Swiss-Prot  Length:94

    Alignment length:93
                                    11        21        31        41        51        61        71        81        91   
           QCR8_YEAST     2 GPPSGKTYMGWWGHMGGPKQKGITSYAVSPYAQKPLQGIFHNAVFNSFRRFKSQFLYVLIPAGIYWYWWKNGNEYNEFLYSKAGREELERVNV  94
               SCOP domains d1ezvg_ G:                                                                                    SCOP domains
               CATH domains 1ezvG00 G:2-94  [code=1.20.5.210, no name defined]                                            CATH domains
               Pfam domains --------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ......................eeeeee.hhh.....................hhhhhhhhhhhhhhhhhhhhhhhhhhhh..hhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------------- PROSITE
               Transcript 7 Exon 7.1  PDB: G:2-94 UniProt: 1-94 [INCOMPLETE]                                              Transcript 7
                 1ezv G   2 GPPSGKTYMGWWGHMGGPKQKGITSYAVSPYAQKPLQGIFHNAVFNSFRRFKSQFLYVLIPAGIYWYWWKNGNEYNEFLYSKAGREELERVNV  94
                                    11        21        31        41        51        61        71        81        91   

Chain H from PDB  Type:PROTEIN  Length:74
 aligned with QCR6_YEAST | P00127 from UniProtKB/Swiss-Prot  Length:147

    Alignment length:74
                                    83        93       103       113       123       133       143    
           QCR6_YEAST    74 VTDQLEDLREHFKNTEEGKALVHHYEECAERVKIQQQQPGYADLEHKEDCVEEFFHLQHYLDTATAPRLFDKLK 147
               SCOP domains d1ezvh_ H:                                                                 SCOP domains
               CATH domains 1ezvH00 H:74-147  [code=1.10.287.20, no name defined]                      CATH domains
               Pfam domains -------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh............hhhhhhhhhhhhhhhhh.hhhhh.. Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------------------------------------------------- PROSITE
               Transcript 5 Exon 5.1  PDB: H:74-147 UniProt: 1-147 [INCOMPLETE]                        Transcript 5
                 1ezv H  74 VTDQLEDLREHFKNTEEGKALVHHYEECAERVKIQQQQPGYADLEHKEDCVEEFFHLQHYLDTATAPRLFDKLK 147
                                    83        93       103       113       123       133       143    

Chain I from PDB  Type:PROTEIN  Length:55
 aligned with QCR9_YEAST | P22289 from UniProtKB/Swiss-Prot  Length:66

    Alignment length:55
                                    13        23        33        43        53     
           QCR9_YEAST     4 SSLYKTFFKRNAVFVGTIFAGAFVFQTVFDTAITSWYENHNKGKLWKDVKARIAA  58
               SCOP domains d1ezvi_ I:                                              SCOP domains
               CATH domains 1ezvI00 I:4-58  [code=1.20.5.260, no name defined]      CATH domains
               Pfam domains ------------------------------------------------------- Pfam domains
         Sec.struct. author ..hhhhhh.....hhhhhhhhhhhhhhhhhhhhhhhhhhhh...hhhhhhh.... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------- PROSITE
               Transcript 6 Exon 6.2  PDB: I:4-58 UniProt: 2-66 [INCOMPLETE]        Transcript 6
                 1ezv I   4 SSLYKTFFKRNAVFVGTIFAGAFVFQTVFDTAITSWYENHNKGKLWKDVKARIAA  58
                                    13        23        33        43        53     

Chain X from PDB  Type:PROTEIN  Length:127
 aligned with HVM60_MOUSE | P18531 from UniProtKB/Swiss-Prot  Length:116

    Alignment length:127
                                                                                                                           116                             
                                    28        38        48        58        68        78        88        98       108       | -         -         -       
          HVM60_MOUSE    19 DVQLQESGPGLVKPSQSLSLTCSVTGYSITSGYYWNWIRQFPGNKLEWMGYISYDGSNNYNPSLKNRISITRDTSKNQFFLKLNSVTTEDTATYYCAR-----------------------------   -
               SCOP domains d1ezvx_ X: Immunoglobulin heavy chain variable domain, VH                                                                       SCOP domains
               CATH domains 1ezvX00 X:1-127 Immunoglobulins                                                                                                 CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..eeeeee..ee.....eeeeeeee........eeeeeee.....eeeeeeee....eee..........eee....eeeeee...hhhhheeeeeeeeeee...eeeeeee...eeeee....... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1ezv X   1 EVKLQESGAGLVQPSQSLSLTCSVTGYSITSGYYWNWIRLFPGNKLEWVGYISNVGDNNYNPSLKDRLSITRDTSKNQFFLKLNSVTTEDTATYYCARSEYYSVTGYAMDYWGQGTTVTVSSAWRHP 127
                                    10        20        30        40        50        60        70        80        90       100       110       120       

Chain Y from PDB  Type:PROTEIN  Length:107
 aligned with KV5AE_MOUSE | P01647 from UniProtKB/Swiss-Prot  Length:108

    Alignment length:107
                                    10        20        30        40        50        60        70        80        90       100       
          KV5AE_MOUSE     1 DIQMTQTTSSLSASLGDRVTISCRASQDINNYLNWYQQKPDGTVKLLIYYTSRLHSGVPSRFSGSGSGTDYSLTISNLEQEDIATYFCQQGKTLPRTFGGGTKLEIK 107
               SCOP domains d1ezvy_ Y: Immunoglobulin light chain kappa variable domain, VL-kappa                                       SCOP domains
               CATH domains 1ezvY00 Y:1-107 Immunoglobulins                                                                             CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...eeee...........eeeeeee.......eeeeee.....eeeeee...ee...........ee..ee.eee.........eeeeee...........ee.... Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------- Transcript
                 1ezv Y   1 DIELTQTPVSLAASLGDRVTISCRASQDINNFLNWYQQKPDGTIKLLIYYTSRLHAGVPSRFSGSGSGTDYSLTISNLEPEDIATYFCQHHIKFPWTFGAGTKLEIK 107
                                    10        20        30        40        50        60        70        80        90       100       

   Legend:   → Mismatch (orange background)
  - → Gap (green background, '-', border residues have a numbering label)
    → Modified Residue (blue background, lower-case, 'x' indicates undefined single-letter code, labelled with number + name)
  x → Chemical Group (purple background, 'x', labelled with number + name, e.g. ACE or NH2)
  extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '|'

 Classification and Annotation

(-) SCOP Domains  (14, 16)

Asymmetric Unit

(-) CATH Domains  (11, 15)

Asymmetric Unit
(-)
Class: Alpha Beta (26913)
(-)
Class: Mainly Beta (13760)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 1EZV)

(-) Gene Ontology  (47, 140)

Asymmetric Unit(hide GO term definitions)
Chain A   (QCR1_YEAST | P07256)
molecular function
    GO:0003824    catalytic activity    Catalysis of a biochemical reaction at physiological temperatures. In biologically catalyzed reactions, the reactants are known as substrates, and the catalysts are naturally occurring macromolecular substances known as enzymes. Enzymes possess specific binding sites for substrates, and are usually composed wholly or largely of protein, but RNA that has catalytic activity (ribozyme) is often also regarded as enzymatic.
    GO:0046872    metal ion binding    Interacting selectively and non-covalently with any metal ion.
    GO:0004222    metalloendopeptidase activity    Catalysis of the hydrolysis of internal, alpha-peptide bonds in a polypeptide chain by a mechanism in which water acts as a nucleophile, one or two metal ions hold the water molecule in place, and charged amino acid side chains are ligands for the metal ions.
    GO:0005515    protein binding    Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).
    GO:0008121    ubiquinol-cytochrome-c reductase activity    Catalysis of the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: CoQH2 + 2 ferricytochrome c = CoQ + 2 ferrocytochrome c + 2 H+.
    GO:0008270    zinc ion binding    Interacting selectively and non-covalently with zinc (Zn) ions.
biological process
    GO:0009060    aerobic respiration    The enzymatic release of energy from inorganic and organic compounds (especially carbohydrates and fats) which requires oxygen as the terminal electron acceptor.
    GO:1902600    hydrogen ion transmembrane transport    The directed movement of hydrogen ion (proton) across a membrane.
    GO:0006122    mitochondrial electron transport, ubiquinol to cytochrome c    The transfer of electrons from ubiquinol to cytochrome c that occurs during oxidative phosphorylation, mediated by the multisubunit enzyme known as complex III.
    GO:0055114    oxidation-reduction process    A metabolic process that results in the removal or addition of one or more electrons to or from a substance, with or without the concomitant removal or addition of a proton or protons.
    GO:0016485    protein processing    Any protein maturation process achieved by the cleavage of a peptide bond or bonds within a protein. Protein maturation is the process leading to the attainment of the full functional capacity of a protein.
cellular component
    GO:0016020    membrane    A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
    GO:0005743    mitochondrial inner membrane    The inner, i.e. lumen-facing, lipid bilayer of the mitochondrial envelope. It is highly folded to form cristae.
    GO:0005750    mitochondrial respiratory chain complex III    A protein complex located in the mitochondrial inner membrane that forms part of the mitochondrial respiratory chain. Contains about 10 polypeptide subunits including four redox centers: cytochrome b/b6, cytochrome c1 and an 2Fe-2S cluster. Catalyzes the oxidation of ubiquinol by oxidized cytochrome c1.
    GO:0005739    mitochondrion    A semiautonomous, self replicating organelle that occurs in varying numbers, shapes, and sizes in the cytoplasm of virtually all eukaryotic cells. It is notably the site of tissue respiration.
    GO:0070469    respiratory chain    The protein complexes that form the electron transport system (the respiratory chain), associated with a cell membrane, usually the plasma membrane (in prokaryotes) or the inner mitochondrial membrane (on eukaryotes). The respiratory chain complexes transfer electrons from an electron donor to an electron acceptor and are associated with a proton pump to create a transmembrane electrochemical gradient.

Chain B   (QCR2_YEAST | P07257)
molecular function
    GO:0003824    catalytic activity    Catalysis of a biochemical reaction at physiological temperatures. In biologically catalyzed reactions, the reactants are known as substrates, and the catalysts are naturally occurring macromolecular substances known as enzymes. Enzymes possess specific binding sites for substrates, and are usually composed wholly or largely of protein, but RNA that has catalytic activity (ribozyme) is often also regarded as enzymatic.
    GO:0046872    metal ion binding    Interacting selectively and non-covalently with any metal ion.
    GO:0004222    metalloendopeptidase activity    Catalysis of the hydrolysis of internal, alpha-peptide bonds in a polypeptide chain by a mechanism in which water acts as a nucleophile, one or two metal ions hold the water molecule in place, and charged amino acid side chains are ligands for the metal ions.
    GO:0005515    protein binding    Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).
    GO:0008121    ubiquinol-cytochrome-c reductase activity    Catalysis of the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: CoQH2 + 2 ferricytochrome c = CoQ + 2 ferrocytochrome c + 2 H+.
biological process
    GO:0009060    aerobic respiration    The enzymatic release of energy from inorganic and organic compounds (especially carbohydrates and fats) which requires oxygen as the terminal electron acceptor.
    GO:1902600    hydrogen ion transmembrane transport    The directed movement of hydrogen ion (proton) across a membrane.
    GO:0006122    mitochondrial electron transport, ubiquinol to cytochrome c    The transfer of electrons from ubiquinol to cytochrome c that occurs during oxidative phosphorylation, mediated by the multisubunit enzyme known as complex III.
    GO:0055114    oxidation-reduction process    A metabolic process that results in the removal or addition of one or more electrons to or from a substance, with or without the concomitant removal or addition of a proton or protons.
    GO:0006508    proteolysis    The hydrolysis of proteins into smaller polypeptides and/or amino acids by cleavage of their peptide bonds.
cellular component
    GO:0016020    membrane    A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
    GO:0030061    mitochondrial crista    Any of the inward folds of the mitochondrial inner membrane. Their number, extent, and shape differ in mitochondria from different tissues and organisms. They appear to be devices for increasing the surface area of the mitochondrial inner membrane, where the enzymes of electron transport and oxidative phosphorylation are found. Their shape can vary with the respiratory state of the mitochondria.
    GO:0005743    mitochondrial inner membrane    The inner, i.e. lumen-facing, lipid bilayer of the mitochondrial envelope. It is highly folded to form cristae.
    GO:0005750    mitochondrial respiratory chain complex III    A protein complex located in the mitochondrial inner membrane that forms part of the mitochondrial respiratory chain. Contains about 10 polypeptide subunits including four redox centers: cytochrome b/b6, cytochrome c1 and an 2Fe-2S cluster. Catalyzes the oxidation of ubiquinol by oxidized cytochrome c1.
    GO:0005739    mitochondrion    A semiautonomous, self replicating organelle that occurs in varying numbers, shapes, and sizes in the cytoplasm of virtually all eukaryotic cells. It is notably the site of tissue respiration.
    GO:0070469    respiratory chain    The protein complexes that form the electron transport system (the respiratory chain), associated with a cell membrane, usually the plasma membrane (in prokaryotes) or the inner mitochondrial membrane (on eukaryotes). The respiratory chain complexes transfer electrons from an electron donor to an electron acceptor and are associated with a proton pump to create a transmembrane electrochemical gradient.

Chain C   (CYB_YEAST | P00163)
molecular function
    GO:0009055    electron carrier activity    Any molecular entity that serves as an electron acceptor and electron donor in an electron transport chain. An electron transport chain is a process in which a series of electron carriers operate together to transfer electrons from donors to any of several different terminal electron acceptors to generate a transmembrane electrochemical gradient.
    GO:0045153    electron transporter, transferring electrons within CoQH2-cytochrome c reductase complex activity    Enables the directed movement of electrons within the CoQH2-cytochrome c reductase complex.
    GO:0046872    metal ion binding    Interacting selectively and non-covalently with any metal ion.
    GO:0016491    oxidoreductase activity    Catalysis of an oxidation-reduction (redox) reaction, a reversible chemical reaction in which the oxidation state of an atom or atoms within a molecule is altered. One substrate acts as a hydrogen or electron donor and becomes oxidized, while the other acts as hydrogen or electron acceptor and becomes reduced.
    GO:0008121    ubiquinol-cytochrome-c reductase activity    Catalysis of the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: CoQH2 + 2 ferricytochrome c = CoQ + 2 ferrocytochrome c + 2 H+.
biological process
    GO:0009060    aerobic respiration    The enzymatic release of energy from inorganic and organic compounds (especially carbohydrates and fats) which requires oxygen as the terminal electron acceptor.
    GO:1902600    hydrogen ion transmembrane transport    The directed movement of hydrogen ion (proton) across a membrane.
    GO:0006122    mitochondrial electron transport, ubiquinol to cytochrome c    The transfer of electrons from ubiquinol to cytochrome c that occurs during oxidative phosphorylation, mediated by the multisubunit enzyme known as complex III.
    GO:0055114    oxidation-reduction process    A metabolic process that results in the removal or addition of one or more electrons to or from a substance, with or without the concomitant removal or addition of a proton or protons.
    GO:0022904    respiratory electron transport chain    A process in which a series of electron carriers operate together to transfer electrons from donors such as NADH and FADH2 to any of several different terminal electron acceptors to generate a transmembrane electrochemical gradient.
cellular component
    GO:0016021    integral component of membrane    The component of a membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.
    GO:0016020    membrane    A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
    GO:0005743    mitochondrial inner membrane    The inner, i.e. lumen-facing, lipid bilayer of the mitochondrial envelope. It is highly folded to form cristae.
    GO:0005750    mitochondrial respiratory chain complex III    A protein complex located in the mitochondrial inner membrane that forms part of the mitochondrial respiratory chain. Contains about 10 polypeptide subunits including four redox centers: cytochrome b/b6, cytochrome c1 and an 2Fe-2S cluster. Catalyzes the oxidation of ubiquinol by oxidized cytochrome c1.
    GO:0005739    mitochondrion    A semiautonomous, self replicating organelle that occurs in varying numbers, shapes, and sizes in the cytoplasm of virtually all eukaryotic cells. It is notably the site of tissue respiration.
    GO:0070469    respiratory chain    The protein complexes that form the electron transport system (the respiratory chain), associated with a cell membrane, usually the plasma membrane (in prokaryotes) or the inner mitochondrial membrane (on eukaryotes). The respiratory chain complexes transfer electrons from an electron donor to an electron acceptor and are associated with a proton pump to create a transmembrane electrochemical gradient.
    GO:0045275    respiratory chain complex III    A protein complex that transfers electrons from ubiquinol to cytochrome c and translocates two protons across a membrane. The complex contains a core structure of three catalytic subunits: cytochrome b, the Rieske iron sulfur protein (ISP), and cytochrome c1, which are arranged in an integral membrane-bound dimeric complex; additional subunits are present, and vary among different species.

Chain D   (CY1_YEAST | P07143)
molecular function
    GO:0009055    electron carrier activity    Any molecular entity that serves as an electron acceptor and electron donor in an electron transport chain. An electron transport chain is a process in which a series of electron carriers operate together to transfer electrons from donors to any of several different terminal electron acceptors to generate a transmembrane electrochemical gradient.
    GO:0045153    electron transporter, transferring electrons within CoQH2-cytochrome c reductase complex activity    Enables the directed movement of electrons within the CoQH2-cytochrome c reductase complex.
    GO:0020037    heme binding    Interacting selectively and non-covalently with heme, any compound of iron complexed in a porphyrin (tetrapyrrole) ring.
    GO:0046872    metal ion binding    Interacting selectively and non-covalently with any metal ion.
biological process
    GO:0006122    mitochondrial electron transport, ubiquinol to cytochrome c    The transfer of electrons from ubiquinol to cytochrome c that occurs during oxidative phosphorylation, mediated by the multisubunit enzyme known as complex III.
    GO:0055114    oxidation-reduction process    A metabolic process that results in the removal or addition of one or more electrons to or from a substance, with or without the concomitant removal or addition of a proton or protons.
    GO:0006119    oxidative phosphorylation    The phosphorylation of ADP to ATP that accompanies the oxidation of a metabolite through the operation of the respiratory chain. Oxidation of compounds establishes a proton gradient across the membrane, providing the energy for ATP synthesis.
    GO:0006626    protein targeting to mitochondrion    The process of directing proteins towards and into the mitochondrion, usually mediated by mitochondrial proteins that recognize signals contained within the imported protein.
cellular component
    GO:0005829    cytosol    The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
    GO:0016021    integral component of membrane    The component of a membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.
    GO:0016020    membrane    A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
    GO:0005743    mitochondrial inner membrane    The inner, i.e. lumen-facing, lipid bilayer of the mitochondrial envelope. It is highly folded to form cristae.
    GO:0005758    mitochondrial intermembrane space    The region between the inner and outer lipid bilayers of the mitochondrial envelope.
    GO:0005746    mitochondrial respiratory chain    The protein complexes that form the mitochondrial electron transport system (the respiratory chain), associated with the inner mitochondrial membrane. The respiratory chain complexes transfer electrons from an electron donor to an electron acceptor and are associated with a proton pump to create a transmembrane electrochemical gradient.
    GO:0005750    mitochondrial respiratory chain complex III    A protein complex located in the mitochondrial inner membrane that forms part of the mitochondrial respiratory chain. Contains about 10 polypeptide subunits including four redox centers: cytochrome b/b6, cytochrome c1 and an 2Fe-2S cluster. Catalyzes the oxidation of ubiquinol by oxidized cytochrome c1.
    GO:0005739    mitochondrion    A semiautonomous, self replicating organelle that occurs in varying numbers, shapes, and sizes in the cytoplasm of virtually all eukaryotic cells. It is notably the site of tissue respiration.
    GO:0070469    respiratory chain    The protein complexes that form the electron transport system (the respiratory chain), associated with a cell membrane, usually the plasma membrane (in prokaryotes) or the inner mitochondrial membrane (on eukaryotes). The respiratory chain complexes transfer electrons from an electron donor to an electron acceptor and are associated with a proton pump to create a transmembrane electrochemical gradient.

Chain E   (UCRI_YEAST | P08067)
molecular function
    GO:0051537    2 iron, 2 sulfur cluster binding    Interacting selectively and non-covalently with a 2 iron, 2 sulfur (2Fe-2S) cluster; this cluster consists of two iron atoms, with two inorganic sulfur atoms found between the irons and acting as bridging ligands.
    GO:0051536    iron-sulfur cluster binding    Interacting selectively and non-covalently with an iron-sulfur cluster, a combination of iron and sulfur atoms.
    GO:0046872    metal ion binding    Interacting selectively and non-covalently with any metal ion.
    GO:0016491    oxidoreductase activity    Catalysis of an oxidation-reduction (redox) reaction, a reversible chemical reaction in which the oxidation state of an atom or atoms within a molecule is altered. One substrate acts as a hydrogen or electron donor and becomes oxidized, while the other acts as hydrogen or electron acceptor and becomes reduced.
    GO:0016679    oxidoreductase activity, acting on diphenols and related substances as donors    Catalysis of an oxidation-reduction (redox) reaction in which a diphenol or related substance acts as a hydrogen or electron donor and reduces a hydrogen or electron acceptor.
    GO:0008121    ubiquinol-cytochrome-c reductase activity    Catalysis of the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: CoQH2 + 2 ferricytochrome c = CoQ + 2 ferrocytochrome c + 2 H+.
biological process
    GO:0009060    aerobic respiration    The enzymatic release of energy from inorganic and organic compounds (especially carbohydrates and fats) which requires oxygen as the terminal electron acceptor.
    GO:1902600    hydrogen ion transmembrane transport    The directed movement of hydrogen ion (proton) across a membrane.
    GO:0006122    mitochondrial electron transport, ubiquinol to cytochrome c    The transfer of electrons from ubiquinol to cytochrome c that occurs during oxidative phosphorylation, mediated by the multisubunit enzyme known as complex III.
    GO:0055114    oxidation-reduction process    A metabolic process that results in the removal or addition of one or more electrons to or from a substance, with or without the concomitant removal or addition of a proton or protons.
cellular component
    GO:0016021    integral component of membrane    The component of a membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.
    GO:0016020    membrane    A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
    GO:0005743    mitochondrial inner membrane    The inner, i.e. lumen-facing, lipid bilayer of the mitochondrial envelope. It is highly folded to form cristae.
    GO:0005750    mitochondrial respiratory chain complex III    A protein complex located in the mitochondrial inner membrane that forms part of the mitochondrial respiratory chain. Contains about 10 polypeptide subunits including four redox centers: cytochrome b/b6, cytochrome c1 and an 2Fe-2S cluster. Catalyzes the oxidation of ubiquinol by oxidized cytochrome c1.
    GO:0005739    mitochondrion    A semiautonomous, self replicating organelle that occurs in varying numbers, shapes, and sizes in the cytoplasm of virtually all eukaryotic cells. It is notably the site of tissue respiration.
    GO:0070469    respiratory chain    The protein complexes that form the electron transport system (the respiratory chain), associated with a cell membrane, usually the plasma membrane (in prokaryotes) or the inner mitochondrial membrane (on eukaryotes). The respiratory chain complexes transfer electrons from an electron donor to an electron acceptor and are associated with a proton pump to create a transmembrane electrochemical gradient.

Chain F   (QCR7_YEAST | P00128)
molecular function
    GO:0008121    ubiquinol-cytochrome-c reductase activity    Catalysis of the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: CoQH2 + 2 ferricytochrome c = CoQ + 2 ferrocytochrome c + 2 H+.
biological process
    GO:0009060    aerobic respiration    The enzymatic release of energy from inorganic and organic compounds (especially carbohydrates and fats) which requires oxygen as the terminal electron acceptor.
    GO:1902600    hydrogen ion transmembrane transport    The directed movement of hydrogen ion (proton) across a membrane.
    GO:0006122    mitochondrial electron transport, ubiquinol to cytochrome c    The transfer of electrons from ubiquinol to cytochrome c that occurs during oxidative phosphorylation, mediated by the multisubunit enzyme known as complex III.
    GO:0034551    mitochondrial respiratory chain complex III assembly    The aggregation, arrangement and bonding together of a set of components to form the cytochrome bc(1) complex (also known as ubiquinol-cytochrome c reductase), in the mitochondrial inner membrane.
    GO:0055114    oxidation-reduction process    A metabolic process that results in the removal or addition of one or more electrons to or from a substance, with or without the concomitant removal or addition of a proton or protons.
cellular component
    GO:0016020    membrane    A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
    GO:0005743    mitochondrial inner membrane    The inner, i.e. lumen-facing, lipid bilayer of the mitochondrial envelope. It is highly folded to form cristae.
    GO:0005750    mitochondrial respiratory chain complex III    A protein complex located in the mitochondrial inner membrane that forms part of the mitochondrial respiratory chain. Contains about 10 polypeptide subunits including four redox centers: cytochrome b/b6, cytochrome c1 and an 2Fe-2S cluster. Catalyzes the oxidation of ubiquinol by oxidized cytochrome c1.
    GO:0005739    mitochondrion    A semiautonomous, self replicating organelle that occurs in varying numbers, shapes, and sizes in the cytoplasm of virtually all eukaryotic cells. It is notably the site of tissue respiration.
    GO:0070469    respiratory chain    The protein complexes that form the electron transport system (the respiratory chain), associated with a cell membrane, usually the plasma membrane (in prokaryotes) or the inner mitochondrial membrane (on eukaryotes). The respiratory chain complexes transfer electrons from an electron donor to an electron acceptor and are associated with a proton pump to create a transmembrane electrochemical gradient.

Chain G   (QCR8_YEAST | P08525)
molecular function
    GO:0008121    ubiquinol-cytochrome-c reductase activity    Catalysis of the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: CoQH2 + 2 ferricytochrome c = CoQ + 2 ferrocytochrome c + 2 H+.
biological process
    GO:0009060    aerobic respiration    The enzymatic release of energy from inorganic and organic compounds (especially carbohydrates and fats) which requires oxygen as the terminal electron acceptor.
    GO:1902600    hydrogen ion transmembrane transport    The directed movement of hydrogen ion (proton) across a membrane.
    GO:0006122    mitochondrial electron transport, ubiquinol to cytochrome c    The transfer of electrons from ubiquinol to cytochrome c that occurs during oxidative phosphorylation, mediated by the multisubunit enzyme known as complex III.
    GO:0055114    oxidation-reduction process    A metabolic process that results in the removal or addition of one or more electrons to or from a substance, with or without the concomitant removal or addition of a proton or protons.
cellular component
    GO:0016020    membrane    A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
    GO:0005743    mitochondrial inner membrane    The inner, i.e. lumen-facing, lipid bilayer of the mitochondrial envelope. It is highly folded to form cristae.
    GO:0005750    mitochondrial respiratory chain complex III    A protein complex located in the mitochondrial inner membrane that forms part of the mitochondrial respiratory chain. Contains about 10 polypeptide subunits including four redox centers: cytochrome b/b6, cytochrome c1 and an 2Fe-2S cluster. Catalyzes the oxidation of ubiquinol by oxidized cytochrome c1.
    GO:0005739    mitochondrion    A semiautonomous, self replicating organelle that occurs in varying numbers, shapes, and sizes in the cytoplasm of virtually all eukaryotic cells. It is notably the site of tissue respiration.
    GO:0070469    respiratory chain    The protein complexes that form the electron transport system (the respiratory chain), associated with a cell membrane, usually the plasma membrane (in prokaryotes) or the inner mitochondrial membrane (on eukaryotes). The respiratory chain complexes transfer electrons from an electron donor to an electron acceptor and are associated with a proton pump to create a transmembrane electrochemical gradient.

Chain H   (QCR6_YEAST | P00127)
molecular function
    GO:0008121    ubiquinol-cytochrome-c reductase activity    Catalysis of the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: CoQH2 + 2 ferricytochrome c = CoQ + 2 ferrocytochrome c + 2 H+.
biological process
    GO:0009060    aerobic respiration    The enzymatic release of energy from inorganic and organic compounds (especially carbohydrates and fats) which requires oxygen as the terminal electron acceptor.
    GO:1902600    hydrogen ion transmembrane transport    The directed movement of hydrogen ion (proton) across a membrane.
    GO:0006122    mitochondrial electron transport, ubiquinol to cytochrome c    The transfer of electrons from ubiquinol to cytochrome c that occurs during oxidative phosphorylation, mediated by the multisubunit enzyme known as complex III.
    GO:0055114    oxidation-reduction process    A metabolic process that results in the removal or addition of one or more electrons to or from a substance, with or without the concomitant removal or addition of a proton or protons.
cellular component
    GO:0016020    membrane    A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
    GO:0005743    mitochondrial inner membrane    The inner, i.e. lumen-facing, lipid bilayer of the mitochondrial envelope. It is highly folded to form cristae.
    GO:0005758    mitochondrial intermembrane space    The region between the inner and outer lipid bilayers of the mitochondrial envelope.
    GO:0005750    mitochondrial respiratory chain complex III    A protein complex located in the mitochondrial inner membrane that forms part of the mitochondrial respiratory chain. Contains about 10 polypeptide subunits including four redox centers: cytochrome b/b6, cytochrome c1 and an 2Fe-2S cluster. Catalyzes the oxidation of ubiquinol by oxidized cytochrome c1.
    GO:0005739    mitochondrion    A semiautonomous, self replicating organelle that occurs in varying numbers, shapes, and sizes in the cytoplasm of virtually all eukaryotic cells. It is notably the site of tissue respiration.
    GO:0034399    nuclear periphery    The portion of the nuclear lumen proximal to the inner nuclear membrane.
    GO:0070469    respiratory chain    The protein complexes that form the electron transport system (the respiratory chain), associated with a cell membrane, usually the plasma membrane (in prokaryotes) or the inner mitochondrial membrane (on eukaryotes). The respiratory chain complexes transfer electrons from an electron donor to an electron acceptor and are associated with a proton pump to create a transmembrane electrochemical gradient.

Chain I   (QCR9_YEAST | P22289)
molecular function
    GO:0008121    ubiquinol-cytochrome-c reductase activity    Catalysis of the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: CoQH2 + 2 ferricytochrome c = CoQ + 2 ferrocytochrome c + 2 H+.
biological process
    GO:0009060    aerobic respiration    The enzymatic release of energy from inorganic and organic compounds (especially carbohydrates and fats) which requires oxygen as the terminal electron acceptor.
    GO:1902600    hydrogen ion transmembrane transport    The directed movement of hydrogen ion (proton) across a membrane.
    GO:0006122    mitochondrial electron transport, ubiquinol to cytochrome c    The transfer of electrons from ubiquinol to cytochrome c that occurs during oxidative phosphorylation, mediated by the multisubunit enzyme known as complex III.
    GO:0034551    mitochondrial respiratory chain complex III assembly    The aggregation, arrangement and bonding together of a set of components to form the cytochrome bc(1) complex (also known as ubiquinol-cytochrome c reductase), in the mitochondrial inner membrane.
    GO:0055114    oxidation-reduction process    A metabolic process that results in the removal or addition of one or more electrons to or from a substance, with or without the concomitant removal or addition of a proton or protons.
cellular component
    GO:0016021    integral component of membrane    The component of a membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.
    GO:0016020    membrane    A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
    GO:0005743    mitochondrial inner membrane    The inner, i.e. lumen-facing, lipid bilayer of the mitochondrial envelope. It is highly folded to form cristae.
    GO:0005750    mitochondrial respiratory chain complex III    A protein complex located in the mitochondrial inner membrane that forms part of the mitochondrial respiratory chain. Contains about 10 polypeptide subunits including four redox centers: cytochrome b/b6, cytochrome c1 and an 2Fe-2S cluster. Catalyzes the oxidation of ubiquinol by oxidized cytochrome c1.
    GO:0005739    mitochondrion    A semiautonomous, self replicating organelle that occurs in varying numbers, shapes, and sizes in the cytoplasm of virtually all eukaryotic cells. It is notably the site of tissue respiration.
    GO:0070469    respiratory chain    The protein complexes that form the electron transport system (the respiratory chain), associated with a cell membrane, usually the plasma membrane (in prokaryotes) or the inner mitochondrial membrane (on eukaryotes). The respiratory chain complexes transfer electrons from an electron donor to an electron acceptor and are associated with a proton pump to create a transmembrane electrochemical gradient.

Chain X   (HVM60_MOUSE | P18531)
molecular function
    GO:0003823    antigen binding    Interacting selectively and non-covalently with an antigen, any substance which is capable of inducing a specific immune response and of reacting with the products of that response, the specific antibody or specifically sensitized T-lymphocytes, or both. Binding may counteract the biological activity of the antigen.
    GO:0034987    immunoglobulin receptor binding    Interacting selectively and non-covalently with one or more specific sites on an immunoglobulin receptor molecule.
biological process
    GO:0050853    B cell receptor signaling pathway    A series of molecular signals initiated by the cross-linking of an antigen receptor on a B cell.
    GO:0006958    complement activation, classical pathway    Any process involved in the activation of any of the steps of the classical pathway of the complement cascade which allows for the direct killing of microbes, the disposal of immune complexes, and the regulation of other immune processes.
    GO:0042742    defense response to bacterium    Reactions triggered in response to the presence of a bacterium that act to protect the cell or organism.
    GO:0045087    innate immune response    Innate immune responses are defense responses mediated by germline encoded components that directly recognize components of potential pathogens.
    GO:0006911    phagocytosis, engulfment    The internalization of bacteria, immune complexes and other particulate matter or of an apoptotic cell by phagocytosis, including the membrane and cytoskeletal processes required, which involves one of three mechanisms: zippering of pseudopods around a target via repeated receptor-ligand interactions, sinking of the target directly into plasma membrane of the phagocytosing cell, or induced uptake via an enhanced membrane ruffling of the phagocytosing cell similar to macropinocytosis.
    GO:0006910    phagocytosis, recognition    The initial step in phagocytosis involving adhesion to bacteria, immune complexes and other particulate matter, or an apoptotic cell and based on recognition of factors such as bacterial cell wall components, opsonins like complement and antibody or protein receptors and lipids like phosphatidyl serine, and leading to intracellular signaling in the phagocytosing cell.
    GO:0050871    positive regulation of B cell activation    Any process that activates or increases the frequency, rate or extent of B cell activation.
cellular component
    GO:0072562    blood microparticle    A phospholipid microvesicle that is derived from any of several cell types, such as platelets, blood cells, endothelial cells, or others, and contains membrane receptors as well as other proteins characteristic of the parental cell. Microparticles are heterogeneous in size, and are characterized as microvesicles free of nucleic acids.
    GO:0009897    external side of plasma membrane    The leaflet of the plasma membrane that faces away from the cytoplasm and any proteins embedded or anchored in it or attached to its surface.
    GO:0042571    immunoglobulin complex, circulating    An immunoglobulin complex that is secreted into extracellular space and found in mucosal areas or other tissues or circulating in the blood or lymph. In its canonical form, a circulating immunoglobulin complex is composed of two identical heavy chains and two identical light chains, held together by disulfide bonds. Some forms of are polymers of the basic structure and contain additional components such as J-chain and the secretory component.

Chain Y   (KV5AE_MOUSE | P01647)
molecular function
    GO:0003823    antigen binding    Interacting selectively and non-covalently with an antigen, any substance which is capable of inducing a specific immune response and of reacting with the products of that response, the specific antibody or specifically sensitized T-lymphocytes, or both. Binding may counteract the biological activity of the antigen.

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 Related Entries

(-) Entries Sharing at Least One Protein Chain (UniProt ID)

UniProtKB/Swiss-Prot
        CY1_YEAST | P071431kb9 1kyo 1p84 2ibz 3cx5 3cxh 4pd4
        CYB_YEAST | P001631kb9 1kyo 1p84 2ibz 3cx5 3cxh 4pd4
        HVM60_MOUSE | P185312ibz
        KV5AE_MOUSE | P016472v7h 2vwe 3u0w 4pd4
        QCR1_YEAST | P072561kb9 1kyo 1p84 2ibz 3cx5 3cxh 4pd4
        QCR2_YEAST | P072571kb9 1kyo 1p84 2ibz 3cx5 3cxh 4pd4
        QCR6_YEAST | P001271kb9 1kyo 1p84 2ibz 3cx5 3cxh 4pd4
        QCR7_YEAST | P001281kb9 1kyo 1p84 2ibz 3cx5 3cxh 4pd4
        QCR8_YEAST | P085251kb9 1kyo 1p84 2ibz 3cx5 3cxh 4pd4
        QCR9_YEAST | P222891kb9 1kyo 1p84 2ibz 3cx5 3cxh 4pd4
        UCRI_YEAST | P080671kb9 1kyo 1p84 2ibz 3cx5 3cxh 4pd4

(-) Related Entries Specified in the PDB File

1bcc CYTOCHROME BC1 COMPLEX FROM CHICKEN
1be3 CYTOCHROME BC1 COMPLEX FROM BOVINE
1bgy CYTOCHROME BC1 COMPLEX FROM BOVINE
1qcr CRYSTAL STRUCTURE OF BOVINE MITOCHONDRIAL CYTOCHROME BC1 COMPLEX
2bcc STIGMATELLIN BOUND CYTOCHROME BC1 COMPLEX FROM CHICKEN
3bcc STIGMATELLIN AND ANTIMYCIN BOUND CYTOCHROME BC1 COMPLEX FROM CHICKEN