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(-) Description

Title :  COMPLEX II (SUCCINATE DEHYDROGENASE) FROM E. COLI WITH ATPENIN A5 INHIBITOR CO-CRYSTALLIZED AT THE UBIQUINONE BINDING SITE
 
Authors :  R. Horsefield, V. Yankovskaya, G. Sexton, W. Whittingham, K. Shiomi, S B. Byrne, G. Cecchini, S. Iwata
Date :  19 Jul 05  (Deposition) - 03 Jan 06  (Release) - 13 Jul 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  3.10
Chains :  Asym. Unit :  A,B,C,D
Biol. Unit 1:  A,B,C,D  (3x)
Keywords :  Membrane Protein, Aerobic Reparatory Complex Ii, Sqr, Succinate:Ubiquinone Oxidoreductase, Aa5, At5, Atpenin A5, Sdh, Succinate Dehydrogenase, Oxidoreductase-Electron Transport Complex (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  R. Horsefield, V. Yankovskaya, G. Sexton, W. Whittingham, K. Shiomi, S. Omura, B. Byrne, G. Cecchini, S. Iwata
Structural And Computational Analysis Of The Quinone-Bindin Site Of Complex Ii (Succinate-Ubiquinone Oxidoreductase): A Mechanism Of Electron Transfer And Proton Conduction During Ubiquinone Reduction.
J. Biol. Chem. V. 281 7309 2006
PubMed-ID: 16407191  |  Reference-DOI: 10.1074/JBC.M508173200

(-) Compounds

Molecule 1 - SUCCINATE DEHYDROGENASE FLAVOPROTEIN SUBUNIT
    Chains: A
    EC Number: 1.3.99.1
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Plasmid: PFAS
    Expression System Strain: DW35
    Expression System Taxid: 562
    Expression System Vector Type: PLASMID
    Organism Scientific: ESCHERICHIA COLI
    Organism Taxid: 562
 
Molecule 2 - SUCCINATE DEHYDROGENASE IRON-SULFUR PROTEIN
    Chains: B
    EC Number: 1.3.99.1
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Plasmid: PFAS
    Expression System Strain: DW35
    Expression System Taxid: 562
    Expression System Vector Type: PLASMID
    Organism Scientific: ESCHERICHIA COLI
    Organism Taxid: 562
 
Molecule 3 - SUCCINATE DEHYDROGENASE CYTOCHROME B556 SUBUNIT
    Chains: C
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Plasmid: PFAS
    Expression System Strain: DW35
    Expression System Taxid: 562
    Expression System Vector Type: PLASMID
    Organism Scientific: ESCHERICHIA COLI
    Organism Taxid: 562
    Synonym: CYTOCHROME B-556
 
Molecule 4 - SUCCINATE DEHYDROGENASE HYDROPHOBIC MEMBRANE ANCHOR PROTEIN
    Chains: D
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Plasmid: PFAS
    Expression System Strain: DW35
    Expression System Taxid: 562
    Expression System Vector Type: PLASMID
    Organism Scientific: ESCHERICHIA COLI
    Organism Taxid: 562

 Structural Features

(-) Chains, Units

  1234
Asymmetric Unit : ABCD
Biological Unit 1 (3x): ABCD

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (8, 8)

Asymmetric Unit (8, 8)
No.NameCountTypeFull Name
1AT51Ligand/Ion3-[(2S,4S,5R)-5,6-DICHLORO-2,4-DIMETHYL-1-OXOHEXYL]-4-HYDROXY-5,6-DIMETHOXY-2(1H)-PYRIDINONE
2CDN1Ligand/IonCARDIOLIPIN
3F3S1Ligand/IonFE3-S4 CLUSTER
4FAD1Ligand/IonFLAVIN-ADENINE DINUCLEOTIDE
5FES1Ligand/IonFE2/S2 (INORGANIC) CLUSTER
6HEB1Ligand/IonHEME B/C
7OAA1Ligand/IonOXALOACETATE ION
8SF41Ligand/IonIRON/SULFUR CLUSTER
Biological Unit 1 (8, 24)
No.NameCountTypeFull Name
1AT53Ligand/Ion3-[(2S,4S,5R)-5,6-DICHLORO-2,4-DIMETHYL-1-OXOHEXYL]-4-HYDROXY-5,6-DIMETHOXY-2(1H)-PYRIDINONE
2CDN3Ligand/IonCARDIOLIPIN
3F3S3Ligand/IonFE3-S4 CLUSTER
4FAD3Ligand/IonFLAVIN-ADENINE DINUCLEOTIDE
5FES3Ligand/IonFE2/S2 (INORGANIC) CLUSTER
6HEB3Ligand/IonHEME B/C
7OAA3Ligand/IonOXALOACETATE ION
8SF43Ligand/IonIRON/SULFUR CLUSTER

(-) Sites  (8, 8)

Asymmetric Unit (8, 8)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREGLY A:51 , PHE A:126 , HIS A:242 , LEU A:252 , THR A:254 , GLU A:255 , ARG A:286 , HIS A:354 , ARG A:399 , GLY A:401 , GLY A:402 , FAD A:601BINDING SITE FOR RESIDUE OAA A 589
2AC2SOFTWAREGLY A:14 , ALA A:15 , GLY A:16 , GLY A:17 , ALA A:18 , SER A:37 , LYS A:38 , VAL A:39 , SER A:44 , HIS A:45 , THR A:46 , SER A:48 , ALA A:49 , GLN A:50 , GLY A:51 , GLY A:52 , TRP A:164 , TYR A:165 , ALA A:166 , ALA A:201 , THR A:202 , GLY A:203 , ASN A:214 , ASP A:221 , TYR A:355 , GLU A:388 , ARG A:399 , GLY A:402 , SER A:404 , LEU A:405 , LEU A:408 , OAA A:589BINDING SITE FOR RESIDUE FAD A 601
3AC3SOFTWARESER B:54 , CYS B:55 , ARG B:56 , GLY B:58 , VAL B:59 , CYS B:60 , GLY B:61 , ASP B:63 , CYS B:75BINDING SITE FOR RESIDUE FES B 302
4AC4SOFTWARECYS B:149 , ILE B:150 , CYS B:152 , ALA B:153 , CYS B:154 , CYS B:155 , CYS B:216 , PRO B:217BINDING SITE FOR RESIDUE SF4 B 303
5AC5SOFTWARECYS B:159 , PRO B:172 , CYS B:206 , HIS B:207 , SER B:208 , ILE B:209 , MET B:210 , ASN B:211 , CYS B:212 , THR B:223BINDING SITE FOR RESIDUE F3S B 304
6AC6SOFTWAREHIS B:207 , HIS C:30 , ARG C:31 , THR C:37 , PHE C:38 , HIS C:84 , VAL C:85 , GLY C:88 , CDN C:132 , ARG D:20 , ALA D:23 , THR D:27 , ILE D:68 , HIS D:71 , GLY D:75 , MET D:76 , GLN D:78BINDING SITE FOR RESIDUE HEB C 130
7AC7SOFTWAREPRO B:160 , TRP B:164 , HIS B:207 , ILE B:209 , LEU C:15 , PHE C:20 , ALA C:24 , SER C:27 , ILE C:28 , ARG C:31 , ASP D:82 , TYR D:83BINDING SITE FOR RESIDUE AT5 C 131
8AC8SOFTWARELEU C:44 , SER C:51 , ALA C:61 , SER C:62 , MET C:65 , MET C:74 , LEU C:78 , VAL C:115 , LEU C:123 , ALA C:124 , VAL C:126 , LEU C:127 , TRP C:129 , HEB C:130 , ILE D:30 , GLY D:41 , LEU D:43 , ILE D:68BINDING SITE FOR RESIDUE CDN C 132

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 2ACZ)

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 2ACZ)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 2ACZ)

(-) PROSITE Motifs  (6, 6)

Asymmetric Unit (6, 6)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
12FE2S_FER_2PS51085 2Fe-2S ferredoxin-type iron-sulfur binding domain profile.SDHB_ECOLI8-97  1B:8-97
2SDH_CYT_1PS01000 Succinate dehydrogenase cytochrome b subunit signature 1.DHSC_ECOLI9-33  1C:9-33
3FRD_SDH_FAD_BINDINGPS00504 Fumarate reductase / succinate dehydrogenase FAD-binding site.SDHA_ECO5743-52  1A:43-52
SDHA_ECOL643-52  1A:43-52
SDHA_ECOLI43-52  1A:43-52
4SDH_CYT_2PS01001 Succinate dehydrogenase cytochrome b subunit signature 2.DHSC_ECOLI84-97  1C:84-97
54FE4S_FER_2PS51379 4Fe-4S ferredoxin-type iron-sulfur binding domain profile.SDHB_ECOLI139-169  1B:139-169
64FE4S_FER_1PS00198 4Fe-4S ferredoxin-type iron-sulfur binding region signature.SDHB_ECOLI149-160  1B:149-160
Biological Unit 1 (6, 24)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
12FE2S_FER_2PS51085 2Fe-2S ferredoxin-type iron-sulfur binding domain profile.SDHB_ECOLI8-97  3B:8-97
2SDH_CYT_1PS01000 Succinate dehydrogenase cytochrome b subunit signature 1.DHSC_ECOLI9-33  3C:9-33
3FRD_SDH_FAD_BINDINGPS00504 Fumarate reductase / succinate dehydrogenase FAD-binding site.SDHA_ECO5743-52  3A:43-52
SDHA_ECOL643-52  3A:43-52
SDHA_ECOLI43-52  3A:43-52
4SDH_CYT_2PS01001 Succinate dehydrogenase cytochrome b subunit signature 2.DHSC_ECOLI84-97  3C:84-97
54FE4S_FER_2PS51379 4Fe-4S ferredoxin-type iron-sulfur binding domain profile.SDHB_ECOLI139-169  3B:139-169
64FE4S_FER_1PS00198 4Fe-4S ferredoxin-type iron-sulfur binding region signature.SDHB_ECOLI149-160  3B:149-160

(-) Exons   (0, 0)

(no "Exon" information available for 2ACZ)

(-) 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:588
 aligned with SDHA_ECO57 | P0AC43 from UniProtKB/Swiss-Prot  Length:588

    Alignment length:588
                                    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       390       400       410       420       430       440       450       460       470       480       490       500       510       520       530       540       550       560       570       580        
           SDHA_ECO57     1 MKLPVREFDAVVIGAGGAGMRAALQISQSGQTCALLSKVFPTRSHTVSAQGGITVALGNTHEDNWEWHMYDTVKGSDYIGDQDAIEYMCKTGPEAILELEHMGLPFSRLDDGRIYQRPFGGQSKNFGGEQAARTAAAADRTGHALLHTLYQQNLKNHTTIFSEWYALDLVKNQDGAVVGCTALCIETGEVVYFKARATVLATGGAGRIYQSTTNAHINTGDGVGMAIRAGVPVQDMEMWQFHPTGIAGAGVLVTEGCRGEGGYLLNKHGERFMERYAPNAKDLAGRDVVARSIMIEIREGRGCDGPWGPHAKLKLDHLGKEVLESRLPGILELSRTFAHVDPVKEPIPVIPTCHYMMGGIPTKVTGQALTVNEKGEDVVVPGLFAVGEIACVSVHGANRLGGNSLLDLVVFGRAAGLHLQESIAEQGALRDASESDVEASLDRLNRWNNNRNGEDPVAIRKALQECMQHNFSVFREGDAMAKGLEQLKVIRERLKNARLDDTSSEFNTQRVECLELDNLMETAYATAVSANFRTESRGAHSRFDFPDRDDENWLCHSLYLPESESMTRRSVNMEPKLRPAFPPKIRTY 588
               SCOP domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SCOP domains
               CATH domains 2aczA01 A:1-245,A:351-430  [code=3.50.50.60, no name defined]                                                                                                                                                                                        ---------------------------------------------------------------------------------------------------------2aczA01 A:1-245,A:351-430  [code=3.50.50.60, no name defined]                   2aczA03 A:431-547  [code=1.20.58.100, no name defined]                                                               2aczA04 A:548-588                         CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author ..........eee..hhhhhhhhhhhhhh....eeee..hhhhhhhhhh...ee.........hhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhh.....................eee......eeee....hhhhhhhhhhhhhhhhh..eeee.eeeeeeee.....eeeeeeee.....eeee....eee.....................hhhhhh...........eeeeeeee........hhhhhhh.eee.....hhhhhhh..hhhhhhhhhhhhhhhhh..............eeee....hhhhhhhhhhhhhhhhhhhh........eeeeeeeeee...ee.....eeeee.....eeeeeeeee....ee..........hhhhhhhhhhhhhhhhhhhhhhhhh......hhhhhhhhhhhhhhhhhh....hhhhhhhhhhhhhhhhh..eehhhhhhhhhhhhhhhhhhhhhh.........hhhhhhhhhhhhhhhhhhhhhhhhhhh.......ee.............................................. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                PROSITE (2) ------------------------------------------FRD_SDH_FA-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (2)
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 2acz A   1 MKLPVREFDAVVIGAGGAGMRAALQISQSGQTCALLSKVFPTRSHTVSAQGGITVALGNTHEDNWEWHMYDTVKGSDYIGDQDAIEYMCKTGPEAILELEHMGLPFSRLDDGRIYQRPFGGQSKNFGGEQAARTAAAADRTGHALLHTLYQQNLKNHTTIFSEWYALDLVKNQDGAVVGCTALCIETGEVVYFKARATVLATGGAGRIYQSTTNAHINTGDGVGMAIRAGVPVQDMEMWQFHPTGIAGAGVLVTEGCRGEGGYLLNKHGERFMERYAPNAKDLAGRDVVARSIMIEIREGRGCDGPWGPHAKLKLDHLGKEVLESRLPGILELSRTFAHVDPVKEPIPVIPTCHYMMGGIPTKVTGQALTVNEKGEDVVVPGLFAVGEIACVSVHGANRLGGNSLLDLVVFGRAAGLHLQESIAEQGALRDASESDVEASLDRLNRWNNNRNGEDPVAIRKALQECMQHNFSVFREGDAMAKGLEQLKVIRERLKNARLDDTSSEFNTQRVECLELDNLMETAYATAVSANFRTESRGAHSRFDFPDRDDENWLCHSLYLPESESMTRRSVNMEPKLRPAFPPKIRTY 588
                                    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       390       400       410       420       430       440       450       460       470       480       490       500       510       520       530       540       550       560       570       580        


Chain A from PDB  Type:PROTEIN  Length:588
 aligned with SDHA_ECOL6 | P0AC42 from UniProtKB/Swiss-Prot  Length:588

    Alignment length:588
                                    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       390       400       410       420       430       440       450       460       470       480       490       500       510       520       530       540       550       560       570       580        
           SDHA_ECOL6     1 MKLPVREFDAVVIGAGGAGMRAALQISQSGQTCALLSKVFPTRSHTVSAQGGITVALGNTHEDNWEWHMYDTVKGSDYIGDQDAIEYMCKTGPEAILELEHMGLPFSRLDDGRIYQRPFGGQSKNFGGEQAARTAAAADRTGHALLHTLYQQNLKNHTTIFSEWYALDLVKNQDGAVVGCTALCIETGEVVYFKARATVLATGGAGRIYQSTTNAHINTGDGVGMAIRAGVPVQDMEMWQFHPTGIAGAGVLVTEGCRGEGGYLLNKHGERFMERYAPNAKDLAGRDVVARSIMIEIREGRGCDGPWGPHAKLKLDHLGKEVLESRLPGILELSRTFAHVDPVKEPIPVIPTCHYMMGGIPTKVTGQALTVNEKGEDVVVPGLFAVGEIACVSVHGANRLGGNSLLDLVVFGRAAGLHLQESIAEQGALRDASESDVEASLDRLNRWNNNRNGEDPVAIRKALQECMQHNFSVFREGDAMAKGLEQLKVIRERLKNARLDDTSSEFNTQRVECLELDNLMETAYATAVSANFRTESRGAHSRFDFPDRDDENWLCHSLYLPESESMTRRSVNMEPKLRPAFPPKIRTY 588
               SCOP domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SCOP domains
               CATH domains 2aczA01 A:1-245,A:351-430  [code=3.50.50.60, no name defined]                                                                                                                                                                                        ---------------------------------------------------------------------------------------------------------2aczA01 A:1-245,A:351-430  [code=3.50.50.60, no name defined]                   2aczA03 A:431-547  [code=1.20.58.100, no name defined]                                                               2aczA04 A:548-588                         CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author ..........eee..hhhhhhhhhhhhhh....eeee..hhhhhhhhhh...ee.........hhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhh.....................eee......eeee....hhhhhhhhhhhhhhhhh..eeee.eeeeeeee.....eeeeeeee.....eeee....eee.....................hhhhhh...........eeeeeeee........hhhhhhh.eee.....hhhhhhh..hhhhhhhhhhhhhhhhh..............eeee....hhhhhhhhhhhhhhhhhhhh........eeeeeeeeee...ee.....eeeee.....eeeeeeeee....ee..........hhhhhhhhhhhhhhhhhhhhhhhhh......hhhhhhhhhhhhhhhhhh....hhhhhhhhhhhhhhhhh..eehhhhhhhhhhhhhhhhhhhhhh.........hhhhhhhhhhhhhhhhhhhhhhhhhhh.......ee.............................................. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                PROSITE (2) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ PROSITE (2)
                PROSITE (3) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ PROSITE (3)
                PROSITE (4) ------------------------------------------FRD_SDH_FA-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (4)
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 2acz A   1 MKLPVREFDAVVIGAGGAGMRAALQISQSGQTCALLSKVFPTRSHTVSAQGGITVALGNTHEDNWEWHMYDTVKGSDYIGDQDAIEYMCKTGPEAILELEHMGLPFSRLDDGRIYQRPFGGQSKNFGGEQAARTAAAADRTGHALLHTLYQQNLKNHTTIFSEWYALDLVKNQDGAVVGCTALCIETGEVVYFKARATVLATGGAGRIYQSTTNAHINTGDGVGMAIRAGVPVQDMEMWQFHPTGIAGAGVLVTEGCRGEGGYLLNKHGERFMERYAPNAKDLAGRDVVARSIMIEIREGRGCDGPWGPHAKLKLDHLGKEVLESRLPGILELSRTFAHVDPVKEPIPVIPTCHYMMGGIPTKVTGQALTVNEKGEDVVVPGLFAVGEIACVSVHGANRLGGNSLLDLVVFGRAAGLHLQESIAEQGALRDASESDVEASLDRLNRWNNNRNGEDPVAIRKALQECMQHNFSVFREGDAMAKGLEQLKVIRERLKNARLDDTSSEFNTQRVECLELDNLMETAYATAVSANFRTESRGAHSRFDFPDRDDENWLCHSLYLPESESMTRRSVNMEPKLRPAFPPKIRTY 588
                                    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       390       400       410       420       430       440       450       460       470       480       490       500       510       520       530       540       550       560       570       580        


Chain A from PDB  Type:PROTEIN  Length:588
 aligned with SDHA_ECOLI | P0AC41 from UniProtKB/Swiss-Prot  Length:588

    Alignment length:588
                                    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       390       400       410       420       430       440       450       460       470       480       490       500       510       520       530       540       550       560       570       580        
           SDHA_ECOLI     1 MKLPVREFDAVVIGAGGAGMRAALQISQSGQTCALLSKVFPTRSHTVSAQGGITVALGNTHEDNWEWHMYDTVKGSDYIGDQDAIEYMCKTGPEAILELEHMGLPFSRLDDGRIYQRPFGGQSKNFGGEQAARTAAAADRTGHALLHTLYQQNLKNHTTIFSEWYALDLVKNQDGAVVGCTALCIETGEVVYFKARATVLATGGAGRIYQSTTNAHINTGDGVGMAIRAGVPVQDMEMWQFHPTGIAGAGVLVTEGCRGEGGYLLNKHGERFMERYAPNAKDLAGRDVVARSIMIEIREGRGCDGPWGPHAKLKLDHLGKEVLESRLPGILELSRTFAHVDPVKEPIPVIPTCHYMMGGIPTKVTGQALTVNEKGEDVVVPGLFAVGEIACVSVHGANRLGGNSLLDLVVFGRAAGLHLQESIAEQGALRDASESDVEASLDRLNRWNNNRNGEDPVAIRKALQECMQHNFSVFREGDAMAKGLEQLKVIRERLKNARLDDTSSEFNTQRVECLELDNLMETAYATAVSANFRTESRGAHSRFDFPDRDDENWLCHSLYLPESESMTRRSVNMEPKLRPAFPPKIRTY 588
               SCOP domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SCOP domains
               CATH domains 2aczA01 A:1-245,A:351-430  [code=3.50.50.60, no name defined]                                                                                                                                                                                        ---------------------------------------------------------------------------------------------------------2aczA01 A:1-245,A:351-430  [code=3.50.50.60, no name defined]                   2aczA03 A:431-547  [code=1.20.58.100, no name defined]                                                               2aczA04 A:548-588                         CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author ..........eee..hhhhhhhhhhhhhh....eeee..hhhhhhhhhh...ee.........hhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhh.....................eee......eeee....hhhhhhhhhhhhhhhhh..eeee.eeeeeeee.....eeeeeeee.....eeee....eee.....................hhhhhh...........eeeeeeee........hhhhhhh.eee.....hhhhhhh..hhhhhhhhhhhhhhhhh..............eeee....hhhhhhhhhhhhhhhhhhhh........eeeeeeeeee...ee.....eeeee.....eeeeeeeee....ee..........hhhhhhhhhhhhhhhhhhhhhhhhh......hhhhhhhhhhhhhhhhhh....hhhhhhhhhhhhhhhhh..eehhhhhhhhhhhhhhhhhhhhhh.........hhhhhhhhhhhhhhhhhhhhhhhhhhh.......ee.............................................. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                PROSITE (2) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ PROSITE (2)
                PROSITE (3) ------------------------------------------FRD_SDH_FA-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (3)
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 2acz A   1 MKLPVREFDAVVIGAGGAGMRAALQISQSGQTCALLSKVFPTRSHTVSAQGGITVALGNTHEDNWEWHMYDTVKGSDYIGDQDAIEYMCKTGPEAILELEHMGLPFSRLDDGRIYQRPFGGQSKNFGGEQAARTAAAADRTGHALLHTLYQQNLKNHTTIFSEWYALDLVKNQDGAVVGCTALCIETGEVVYFKARATVLATGGAGRIYQSTTNAHINTGDGVGMAIRAGVPVQDMEMWQFHPTGIAGAGVLVTEGCRGEGGYLLNKHGERFMERYAPNAKDLAGRDVVARSIMIEIREGRGCDGPWGPHAKLKLDHLGKEVLESRLPGILELSRTFAHVDPVKEPIPVIPTCHYMMGGIPTKVTGQALTVNEKGEDVVVPGLFAVGEIACVSVHGANRLGGNSLLDLVVFGRAAGLHLQESIAEQGALRDASESDVEASLDRLNRWNNNRNGEDPVAIRKALQECMQHNFSVFREGDAMAKGLEQLKVIRERLKNARLDDTSSEFNTQRVECLELDNLMETAYATAVSANFRTESRGAHSRFDFPDRDDENWLCHSLYLPESESMTRRSVNMEPKLRPAFPPKIRTY 588
                                    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       390       400       410       420       430       440       450       460       470       480       490       500       510       520       530       540       550       560       570       580        


Chain B from PDB  Type:PROTEIN  Length:238
 aligned with SDHB_ECOLI | P07014 from UniProtKB/Swiss-Prot  Length:238

    Alignment length:238
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230        
           SDHB_ECOLI     1 MRLEFSIYRYNPDVDDAPRMQDYTLEADEGRDMMLLDALIQLKEKDPSLSFRRSCREGVCGSDGLNMNGKNGLACITPISALNQPGKKIVIRPLPGLPVIRDLVVDMGQFYAQYEKIKPYLLNNGQNPPAREHLQMPEQREKLDGLYECILCACCSTSCPSFWWNPDKFIGPAGLLAAYRFLIDSRDTETDSRLDGLSDAFSVFRCHSIMNCVSVCPKGLNPTRAIGHIKSMLLQRNA 238
               SCOP domains d2aczb2 B:1-106 automated matches                                                                         d2aczb1 B:107-238 automated matches                                                                                                  SCOP domains
               CATH domains 2aczB01 B:1-106  [code=3.10.20.30, no name defined]                                                       2aczB02 B:107-238 Fumarate Reductase Iron-sulfur Protein; Chain B, domain 2                                                          CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..eeeeeee.........eeeeeee........hhhhhhhhhhhhh.................eeee..eeee.hhhhhhhhh.....eeee......eee..ee.hhhhhhhhhhh..................hhhhhhhhh..........hhhhhhhhhhh.....hhhhhhhhhhhhh.....hhhhhhhh.............hhhhhhh....hhhhhhhhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) -------2FE2S_FER_2  PDB: B:8-97 UniProt: 8-97                                                    -----------------------------------------4FE4S_FER_2  PDB: B:139-169    --------------------------------------------------------------------- PROSITE (1)
                PROSITE (2) ----------------------------------------------------------------------------------------------------------------------------------------------------4FE4S_FER_1 ------------------------------------------------------------------------------ PROSITE (2)
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2acz B   1 MRLEFSIYRYNPDVDDAPRMQDYTLEADEGRDMMLLDALIQLKEKDPSLSFRRSCREGVCGSDGLNMNGKNGLACITPISALNQPGKKIVIRPLPGLPVIRDLVVDMGQFYAQYEKIKPYLLNNGQNPPAREHLQMPEQREKLDGLYECILCACCSTSCPSFWWNPDKFIGPAGLLAAYRFLIDSRDTETDSRLDGLSDAFSVFRCHSIMNCVSVCPKGLNPTRAIGHIKSMLLQRNA 238
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230        


Chain C from PDB  Type:PROTEIN  Length:129
 aligned with DHSC_ECOLI | P69054 from UniProtKB/Swiss-Prot  Length:129

    Alignment length:129
                                    10        20        30        40        50        60        70        80        90       100       110       120         
           DHSC_ECOLI     1 MIRNVKKQRPVNLDLQTIRFPITAIASILHRVSGVITFVAVGILLWLLGTSLSSPEGFEQASAIMGSFFVKFIMWGILTALAYHVVVGIRHMMMDFGYLEETFEAGKRSAKISFVITVVLSLLAGVLVW 129
               SCOP domains d2aczc_ C: Succinate dehydrogenase subunit SdhC                                                                                   SCOP domains
               CATH domains 2aczC00 C:1-129 Fumarate reductase respiratory complex transmembrane subunits                                                     CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....................hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.....hhhhhhhhhhhhhhhhhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (2) --------SDH_CYT_1  PDB: C:9-33   --------------------------------------------------SDH_CYT_2     -------------------------------- PROSITE (2)
                 Transcript --------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2acz C   1 MIRNVKKQRPVNLDLQTIRFPITAIASILHRVSGVITFVAVGILLWLLGTSLSSPEGFEQASAIMGSFFVKFIMWGILTALAYHVVVGIRHMMMDFGYLEETFEAGKRSAKISFVITVVLSLLAGVLVW 129
                                    10        20        30        40        50        60        70        80        90       100       110       120         


Chain D from PDB  Type:PROTEIN  Length:113
 aligned with DHSD_ECOL6 | P0AC45 from UniProtKB/Swiss-Prot  Length:115

    Alignment length:113
                                    12        22        32        42        52        62        72        82        92       102       112   
           DHSD_ECOL6     3 SNASALGRNGVHDFILVRATAIVLTLYIIYMVGFFATSGELTYEVWIGFFASAFTKVFTLLALFSILIHAWIGMWQVLTDYVKPLALRLMLQLVIVVALVVYVIYGFVVVWGV 115
               SCOP domains d2aczd1 D:3-115 Succinate dehydrogenase subunit SdhD                                                              SCOP domains
               CATH domains --------2aczD01 D:11-115 Fumarate reductase respiratory complex transmembrane subunits                            CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ........hhhhhhhhhhhhhhhhhhhhhhhhhhhh.....hhhhhhhhh.hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.hhhhhhhhhhhhhhhhhhhhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------- Transcript
                 2acz D   3 SNASALGRNGVHDFILVRATAIVLTLYIIYMVGFFATSGELTYEVWIGFFASAFTKVFTLLALFSILIHAWIGMWQVLTDYVKPLALRLMLQLVIVVALVVYVIYGFVVVWGV 115
                                    12        22        32        42        52        62        72        82        92       102       112   


Chain D from PDB  Type:PROTEIN  Length:113
 aligned with DHSD_ECOLI | P0AC44 from UniProtKB/Swiss-Prot  Length:115

    Alignment length:113
                                    12        22        32        42        52        62        72        82        92       102       112   
           DHSD_ECOLI     3 SNASALGRNGVHDFILVRATAIVLTLYIIYMVGFFATSGELTYEVWIGFFASAFTKVFTLLALFSILIHAWIGMWQVLTDYVKPLALRLMLQLVIVVALVVYVIYGFVVVWGV 115
               SCOP domains d2aczd1 D:3-115 Succinate dehydrogenase subunit SdhD                                                              SCOP domains
               CATH domains --------2aczD01 D:11-115 Fumarate reductase respiratory complex transmembrane subunits                            CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ........hhhhhhhhhhhhhhhhhhhhhhhhhhhh.....hhhhhhhhh.hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.hhhhhhhhhhhhhhhhhhhhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------- Transcript
                 2acz D   3 SNASALGRNGVHDFILVRATAIVLTLYIIYMVGFFATSGELTYEVWIGFFASAFTKVFTLLALFSILIHAWIGMWQVLTDYVKPLALRLMLQLVIVVALVVYVIYGFVVVWGV 115
                                    12        22        32        42        52        62        72        82        92       102       112   


Chain D from PDB  Type:PROTEIN  Length:113
 aligned with DHSD_SHIFL | P0AC46 from UniProtKB/Swiss-Prot  Length:115

    Alignment length:113
                                    12        22        32        42        52        62        72        82        92       102       112   
           DHSD_SHIFL     3 SNASALGRNGVHDFILVRATAIVLTLYIIYMVGFFATSGELTYEVWIGFFASAFTKVFTLLALFSILIHAWIGMWQVLTDYVKPLALRLMLQLVIVVALVVYVIYGFVVVWGV 115
               SCOP domains d2aczd1 D:3-115 Succinate dehydrogenase subunit SdhD                                                              SCOP domains
               CATH domains --------2aczD01 D:11-115 Fumarate reductase respiratory complex transmembrane subunits                            CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ........hhhhhhhhhhhhhhhhhhhhhhhhhhhh.....hhhhhhhhh.hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.hhhhhhhhhhhhhhhhhhhhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------- Transcript
                 2acz D   3 SNASALGRNGVHDFILVRATAIVLTLYIIYMVGFFATSGELTYEVWIGFFASAFTKVFTLLALFSILIHAWIGMWQVLTDYVKPLALRLMLQLVIVVALVVYVIYGFVVVWGV 115
                                    12        22        32        42        52        62        72        82        92       102       112
   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  (4, 4)

Asymmetric Unit
(-)
Class: All alpha proteins (14657)
(-)
Class: Alpha and beta proteins (a+b) (23004)
(-)
Class: Membrane and cell surface proteins and peptides (2046)

(-) CATH Domains  (6, 7)

Asymmetric Unit
(-)
Class: Alpha Beta (26913)
(-)
Class: Few Secondary Structures (1120)
(-)
Class: Mainly Alpha (13335)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 2ACZ)

(-) Gene Ontology  (24, 91)

Asymmetric Unit(hide GO term definitions)
Chain A   (SDHA_ECO57 | P0AC43)
molecular function
    GO:0050660    flavin adenine dinucleotide binding    Interacting selectively and non-covalently with FAD, flavin-adenine dinucleotide, the coenzyme or the prosthetic group of various flavoprotein oxidoreductase enzymes, in either the oxidized form, FAD, or the reduced form, FADH2.
    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:0016627    oxidoreductase activity, acting on the CH-CH group of donors    Catalysis of an oxidation-reduction (redox) reaction in which a CH-CH group acts as a hydrogen or electron donor and reduces a hydrogen or electron acceptor.
    GO:0008177    succinate dehydrogenase (ubiquinone) activity    Catalysis of the reaction: succinate + ubiquinone = fumarate + ubiquinol.
biological process
    GO:0022900    electron transport chain    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: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:0006099    tricarboxylic acid cycle    A nearly universal metabolic pathway in which the acetyl group of acetyl coenzyme A is effectively oxidized to two CO2 and four pairs of electrons are transferred to coenzymes. The acetyl group combines with oxaloacetate to form citrate, which undergoes successive transformations to isocitrate, 2-oxoglutarate, succinyl-CoA, succinate, fumarate, malate, and oxaloacetate again, thus completing the cycle. In eukaryotes the tricarboxylic acid is confined to the mitochondria. See also glyoxylate cycle.
cellular component
    GO:0016020    membrane    A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
    GO:0005886    plasma membrane    The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.

Chain A   (SDHA_ECOLI | P0AC41)
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:0050660    flavin adenine dinucleotide binding    Interacting selectively and non-covalently with FAD, flavin-adenine dinucleotide, the coenzyme or the prosthetic group of various flavoprotein oxidoreductase enzymes, in either the oxidized form, FAD, or the reduced form, FADH2.
    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:0016627    oxidoreductase activity, acting on the CH-CH group of donors    Catalysis of an oxidation-reduction (redox) reaction in which a CH-CH group acts as a hydrogen or electron donor and reduces a hydrogen or electron acceptor.
    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:0008177    succinate dehydrogenase (ubiquinone) activity    Catalysis of the reaction: succinate + ubiquinone = fumarate + ubiquinol.
    GO:0000104    succinate dehydrogenase activity    Catalysis of the reaction: succinate + acceptor = fumarate + reduced acceptor.
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:0022900    electron transport chain    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: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:0006099    tricarboxylic acid cycle    A nearly universal metabolic pathway in which the acetyl group of acetyl coenzyme A is effectively oxidized to two CO2 and four pairs of electrons are transferred to coenzymes. The acetyl group combines with oxaloacetate to form citrate, which undergoes successive transformations to isocitrate, 2-oxoglutarate, succinyl-CoA, succinate, fumarate, malate, and oxaloacetate again, thus completing the cycle. In eukaryotes the tricarboxylic acid is confined to the mitochondria. See also glyoxylate cycle.
cellular component
    GO:0016020    membrane    A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
    GO:0005886    plasma membrane    The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.
    GO:0045282    plasma membrane succinate dehydrogenase complex    A multimeric complex which consists of flavoprotein (subunit A ; InterPro:IPR003952), iron-sulfur protein (subunit B) and membrane-bound cytochrome b560 (subunit C; InterPro:IPR000701). In some Archaea, the membrane-bound subunits (C or C and D) do not necessarily contain heme. Membrane-bound subunits can bind/react with quinones. Examples of this component are found in Bacterial species.

Chain A   (SDHA_ECOL6 | P0AC42)
molecular function
    GO:0050660    flavin adenine dinucleotide binding    Interacting selectively and non-covalently with FAD, flavin-adenine dinucleotide, the coenzyme or the prosthetic group of various flavoprotein oxidoreductase enzymes, in either the oxidized form, FAD, or the reduced form, FADH2.
    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:0016627    oxidoreductase activity, acting on the CH-CH group of donors    Catalysis of an oxidation-reduction (redox) reaction in which a CH-CH group acts as a hydrogen or electron donor and reduces a hydrogen or electron acceptor.
    GO:0008177    succinate dehydrogenase (ubiquinone) activity    Catalysis of the reaction: succinate + ubiquinone = fumarate + ubiquinol.
biological process
    GO:0022900    electron transport chain    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: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:0006099    tricarboxylic acid cycle    A nearly universal metabolic pathway in which the acetyl group of acetyl coenzyme A is effectively oxidized to two CO2 and four pairs of electrons are transferred to coenzymes. The acetyl group combines with oxaloacetate to form citrate, which undergoes successive transformations to isocitrate, 2-oxoglutarate, succinyl-CoA, succinate, fumarate, malate, and oxaloacetate again, thus completing the cycle. In eukaryotes the tricarboxylic acid is confined to the mitochondria. See also glyoxylate cycle.
cellular component
    GO:0016020    membrane    A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
    GO:0005886    plasma membrane    The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.

Chain B   (SDHB_ECOLI | P07014)
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:0051538    3 iron, 4 sulfur cluster binding    Interacting selectively and non-covalently with a 3 iron, 4 sulfur (3Fe-4S) cluster; this cluster consists of three iron atoms, with the inorganic sulfur atoms found between the irons and acting as bridging ligands. It is essentially a 4Fe-4S cluster with one iron missing.
    GO:0051539    4 iron, 4 sulfur cluster binding    Interacting selectively and non-covalently with a 4 iron, 4 sulfur (4Fe-4S) cluster; this cluster consists of four iron atoms, with the inorganic sulfur atoms found between the irons and acting as bridging ligands.
    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: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: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:0008177    succinate dehydrogenase (ubiquinone) activity    Catalysis of the reaction: succinate + ubiquinone = fumarate + ubiquinol.
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: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:0006099    tricarboxylic acid cycle    A nearly universal metabolic pathway in which the acetyl group of acetyl coenzyme A is effectively oxidized to two CO2 and four pairs of electrons are transferred to coenzymes. The acetyl group combines with oxaloacetate to form citrate, which undergoes successive transformations to isocitrate, 2-oxoglutarate, succinyl-CoA, succinate, fumarate, malate, and oxaloacetate again, thus completing the cycle. In eukaryotes the tricarboxylic acid is confined to the mitochondria. See also glyoxylate cycle.
cellular component
    GO:0016020    membrane    A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
    GO:0005886    plasma membrane    The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.

Chain C   (DHSC_ECOLI | P69054)
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: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.
    GO:0016627    oxidoreductase activity, acting on the CH-CH group of donors    Catalysis of an oxidation-reduction (redox) reaction in which a CH-CH group acts as a hydrogen or electron donor and reduces a hydrogen or electron acceptor.
    GO:0008177    succinate dehydrogenase (ubiquinone) activity    Catalysis of the reaction: succinate + ubiquinone = fumarate + ubiquinol.
    GO:0000104    succinate dehydrogenase activity    Catalysis of the reaction: succinate + acceptor = fumarate + reduced acceptor.
    GO:0048039    ubiquinone binding    Interacting selectively and non-covalently with ubiquinone, a quinone derivative with a tail of isoprene units.
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:0017004    cytochrome complex assembly    The aggregation, arrangement and bonding together of a cytochrome complex. A cytochrome complex is a protein complex in which at least one of the proteins is a cytochrome, i.e. a heme-containing protein involved in catalysis of redox reactions.
    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:0006099    tricarboxylic acid cycle    A nearly universal metabolic pathway in which the acetyl group of acetyl coenzyme A is effectively oxidized to two CO2 and four pairs of electrons are transferred to coenzymes. The acetyl group combines with oxaloacetate to form citrate, which undergoes successive transformations to isocitrate, 2-oxoglutarate, succinyl-CoA, succinate, fumarate, malate, and oxaloacetate again, thus completing the cycle. In eukaryotes the tricarboxylic acid is confined to the mitochondria. See also glyoxylate cycle.
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:0005886    plasma membrane    The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.
    GO:0045281    succinate dehydrogenase complex    A multimeric complex which consists of flavoprotein (subunit A ; InterPro:IPR003952), iron-sulfur protein (subunit B) and membrane-bound cytochrome b560 (subunit C; InterPro:IPR000701). In some Archaea, the membrane-bound subunits (C or C and D) do not necessarily contain heme. Membrane-bound subunits can bind or react with quinones.

Chain D   (DHSD_SHIFL | P0AC46)
molecular function
    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.
    GO:0016627    oxidoreductase activity, acting on the CH-CH group of donors    Catalysis of an oxidation-reduction (redox) reaction in which a CH-CH group acts as a hydrogen or electron donor and reduces a hydrogen or electron acceptor.
    GO:0000104    succinate dehydrogenase activity    Catalysis of the reaction: succinate + acceptor = fumarate + reduced acceptor.
biological process
    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:0006099    tricarboxylic acid cycle    A nearly universal metabolic pathway in which the acetyl group of acetyl coenzyme A is effectively oxidized to two CO2 and four pairs of electrons are transferred to coenzymes. The acetyl group combines with oxaloacetate to form citrate, which undergoes successive transformations to isocitrate, 2-oxoglutarate, succinyl-CoA, succinate, fumarate, malate, and oxaloacetate again, thus completing the cycle. In eukaryotes the tricarboxylic acid is confined to the mitochondria. See also glyoxylate cycle.
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:0005886    plasma membrane    The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.

Chain D   (DHSD_ECOL6 | P0AC45)
molecular function
    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.
    GO:0016627    oxidoreductase activity, acting on the CH-CH group of donors    Catalysis of an oxidation-reduction (redox) reaction in which a CH-CH group acts as a hydrogen or electron donor and reduces a hydrogen or electron acceptor.
    GO:0000104    succinate dehydrogenase activity    Catalysis of the reaction: succinate + acceptor = fumarate + reduced acceptor.
biological process
    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:0006099    tricarboxylic acid cycle    A nearly universal metabolic pathway in which the acetyl group of acetyl coenzyme A is effectively oxidized to two CO2 and four pairs of electrons are transferred to coenzymes. The acetyl group combines with oxaloacetate to form citrate, which undergoes successive transformations to isocitrate, 2-oxoglutarate, succinyl-CoA, succinate, fumarate, malate, and oxaloacetate again, thus completing the cycle. In eukaryotes the tricarboxylic acid is confined to the mitochondria. See also glyoxylate cycle.
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:0005886    plasma membrane    The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.

Chain D   (DHSD_ECOLI | P0AC44)
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: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.
    GO:0016627    oxidoreductase activity, acting on the CH-CH group of donors    Catalysis of an oxidation-reduction (redox) reaction in which a CH-CH group acts as a hydrogen or electron donor and reduces a hydrogen or electron acceptor.
    GO:0000104    succinate dehydrogenase activity    Catalysis of the reaction: succinate + acceptor = fumarate + reduced acceptor.
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:0017004    cytochrome complex assembly    The aggregation, arrangement and bonding together of a cytochrome complex. A cytochrome complex is a protein complex in which at least one of the proteins is a cytochrome, i.e. a heme-containing protein involved in catalysis of redox reactions.
    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:0006099    tricarboxylic acid cycle    A nearly universal metabolic pathway in which the acetyl group of acetyl coenzyme A is effectively oxidized to two CO2 and four pairs of electrons are transferred to coenzymes. The acetyl group combines with oxaloacetate to form citrate, which undergoes successive transformations to isocitrate, 2-oxoglutarate, succinyl-CoA, succinate, fumarate, malate, and oxaloacetate again, thus completing the cycle. In eukaryotes the tricarboxylic acid is confined to the mitochondria. See also glyoxylate cycle.
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:0005886    plasma membrane    The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.

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  2acz
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  DHSC_ECOLI | P69054
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  SDHB_ECOLI | P07014
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 Related Entries

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

UniProtKB/Swiss-Prot
        DHSC_ECOLI | P69054: 1nek 1nen 2ad0 2wdq 2wdr 2wdv 2wp9 2ws3 2wu2 2wu5
        DHSD_ECOL6 | P0AC45: 2ad0
        DHSD_ECOLI | P0AC44: 1nek 1nen 2ad0 2wdq 2wdr 2wdv 2wp9 2ws3 2wu2 2wu5
        DHSD_SHIFL | P0AC46: 2ad0
        SDHA_ECO57 | P0AC43: 2ad0
        SDHA_ECOL6 | P0AC42: 2ad0
        SDHA_ECOLI | P0AC41: 1nek 1nen 2ad0 2wdq 2wdr 2wdv 2wp9 2ws3 2wu2 2wu5
        SDHB_ECOLI | P07014: 1nek 1nen 2ad0 2wdq 2wdr 2wdv 2wp9 2ws3 2wu2 2wu5

(-) Related Entries Specified in the PDB File

1nek CRYSTAL STRUCTURE OF COMPLEX II WITH UBIQUINONE BOUND
1nen CRYSTAL STRUCTURE OF COMPLEX II WITH DINITROPHENOL BOUND
2ad0 THEORETICAL MODEL OF COMPLEX II WITH CARBOXIN DOCKED USING PROTEIN-LIGAND DOCKING