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(-) Description

Title :  CRYSTAL STRUCTURE OF THE 2B4 TCR IN COMPLEX WITH MCC/I-EK
 
Authors :  L. K. Ely, E. W. Newell, M. M. Davis, K. C. Garcia
Date :  26 Jan 11  (Deposition) - 27 Apr 11  (Release) - 10 Aug 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.70
Chains :  Asym./Biol. Unit :  A,B,C,D,P
Keywords :  Ig Domain, Immune System (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  E. W. Newell, L. K. Ely, A. C. Kruse, P. A. Reay, S. N. Rodriguez, A. E. Lin M. S. Kuhns, K. C. Garcia, M. M. Davis
Structural Basis Of Specificity And Cross-Reactivity In T Cell Receptors Specific For Cytochrome C-I-E(K).
J. Immunol. V. 186 5823 2011
PubMed-ID: 21490152  |  Reference-DOI: 10.4049/JIMMUNOL.1100197

(-) Compounds

Molecule 1 - H-2 CLASS II HISTOCOMPATIBILITY ANTIGEN, E-K ALPHA CHAIN
    Chains: A
    Engineered: YES
    Expression System: TRICHOPLUSIA NI
    Expression System Common: CABBAGE LOOPER
    Expression System Taxid: 7111
    Fragment: UNP RESIDUES 26-216
    Organism Common: MOUSE
    Organism Scientific: MUS MUSCULUS
    Organism Taxid: 10090
 
Molecule 2 - MHC CLASS II E-BETA-K
    Chains: B
    Engineered: YES
    Expression System: TRICHOPLUSIA NI
    Expression System Common: CABBAGE LOOPER
    Expression System Taxid: 7111
    Fragment: UNP RESIDUES 29-224
    Gene: H2-EB1
    Organism Common: MOUSE
    Organism Scientific: MUS MUSCULUS
    Organism Taxid: 10090
 
Molecule 3 - T-CELL RECEPTOR ALPHA CHAIN C REGION
    Chains: C
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Taxid: 562
    Gene: TCRA, TRAC
    Organism Common: HUMAN
    Organism Scientific: HOMO SAPIENS
    Organism Taxid: 9606
 
Molecule 4 - 2B4 BETA CHAIN
    Chains: D
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Taxid: 562
    Organism Scientific: MUS MUSCULUS
    Organism Taxid: 10090
 
Molecule 5 - MCC PEPTIDE
    Chains: P
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Taxid: 562
    Fragment: UNP RESIDUES 97-108
    Organism Scientific: MANDUCA SEXTA
    Organism Taxid: 7130

 Structural Features

(-) Chains, Units

  12345
Asymmetric/Biological Unit : ABCDP

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (4, 12)

Asymmetric/Biological Unit (4, 12)
No.NameCountTypeFull Name
1BMA1Ligand/IonBETA-D-MANNOSE
2FUC2Ligand/IonALPHA-L-FUCOSE
3NAG2Ligand/IonN-ACETYL-D-GLUCOSAMINE
4PEG7Ligand/IonDI(HYDROXYETHYL)ETHER

(-) Sites  (12, 12)

Asymmetric Unit (12, 12)
No.NameEvidenceResiduesDescription
01AC1SOFTWAREILE A:1 , ASN B:19 , GLN B:22 , FUC B:203 , ASP C:166 , NAG C:205 , FUC C:206BINDING SITE FOR RESIDUE NAG B 201
02AC2SOFTWAREGLU A:3 , ASN B:19 , GLY B:20 , THR B:21 , GLN B:22 , TYR B:83 , HOH B:200 , NAG B:201BINDING SITE FOR RESIDUE FUC B 203
03AC3SOFTWAREGLU B:14 , HIS B:16 , ARG B:29 , ARG B:39BINDING SITE FOR RESIDUE PEG B 199
04AC4SOFTWARENAG B:201 , GLU C:14 , ASP C:111 , FUC C:206 , BMA C:207 , HOH C:246BINDING SITE FOR RESIDUE NAG C 205
05AC5SOFTWAREILE A:1 , NAG B:201 , ASP C:111 , GLN C:113 , ASP C:166 , LYS C:168 , NAG C:205BINDING SITE FOR RESIDUE FUC C 206
06AC6SOFTWAREASP C:111 , GLN C:113 , NAG C:205BINDING SITE FOR RESIDUE BMA C 207
07AC7SOFTWARETHR C:99 , PHE C:100 , GLY C:101 , GLN C:102 , HOH C:228 , ASN D:41 , GLU D:42 , PHE D:43BINDING SITE FOR RESIDUE PEG C 208
08AC8SOFTWAREASN C:23 , PHE C:24 , THR C:25 , GLU C:66 , SER C:67BINDING SITE FOR RESIDUE PEG C 209
09AC9SOFTWAREVAL C:144 , SER C:145 , GLN C:146 , ILE C:154 , LEU D:177BINDING SITE FOR RESIDUE PEG C 210
10BC1SOFTWAREASN D:38 , LYS D:44 , SER D:87BINDING SITE FOR RESIDUE PEG D 245
11BC2SOFTWARETYR D:10 , ASP D:153 , VAL D:155 , PRO D:176BINDING SITE FOR RESIDUE PEG D 246
12BC3SOFTWAREASN D:38 , LYS D:39BINDING SITE FOR RESIDUE PEG D 247

(-) SS Bonds  (9, 9)

Asymmetric/Biological Unit
No.Residues
1A:107 -A:163
2B:15 -B:79
3B:117 -B:173
4C:22 -C:86
5C:133 -C:183
6C:158 -D:171
7D:23 -D:92
8D:69 -D:75
9D:145 -D:210

(-) Cis Peptide Bonds  (7, 7)

Asymmetric/Biological Unit
No.Residues
1Leu A:15 -Pro A:16
2Ser A:113 -Pro A:114
3Tyr B:123 -Pro B:124
4Ser C:6 -Pro C:7
5Ser C:190 -Ile C:191
6Thr D:7 -Pro D:8
7Tyr D:151 -Pro D:152

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 3QIB)

(-) PROSITE Motifs  (1, 2)

Asymmetric/Biological Unit (1, 2)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1IG_MHCPS00290 Immunoglobulins and major histocompatibility complex proteins signature.HA22_MOUSE186-192  1A:161-167
HB21_MOUSE198-204  1B:172-177

(-) Exons   (0, 0)

(no "Exon" information available for 3QIB)

(-) Sequences/Alignments

Asymmetric/Biological 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:180
 aligned with HA22_MOUSE | P04224 from UniProtKB/Swiss-Prot  Length:255

    Alignment length:180
                                    35        45        55        65        75        85        95       105       115       125       135       145       155       165       175       185       195       205
           HA22_MOUSE    26 IKEEHTIIQAEFYLLPDKRGEFMFDFDGDEIFHVDIEKSETIWRLEEFAKFASFEAQGALANIAVDKANLDVMKERSNNTPDANVAPEVTVLSRSPVNLGEPNILICFIDKFSPPVVNVTWLRNGRPVTEGVSETVFLPRDDHLFRKFHYLTFLPSTDDFYDCEVDHWGLEEPLRKHWEF 205
               SCOP domains d3qiba1 A:1-81 automated matches                                                 d3qiba2 A:82-180 automated matches                                                                  SCOP domains
               CATH domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ CATH domains
               Pfam domains ---MHC_II_alpha-3qibA02 A:4-84                                                      --------C1-set-3qibA01 A:93-175                                                            ----- Pfam domains
         Sec.struct. author ....eeeeeeeeeee...eeeeeeee..eeeeeee....eeee.hhhhhh.ee.hhhhhhhhhhhhhhhhhhhhhhhh............eee.........eeeeeeeeee.....eeeeee..ee....ee....ee.....eeeeeeeee......eeeeeee.......eeeeee. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------------------------------------------------------IG_MHC ------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 3qib A   1 IKEEHTIIQAEFYLLPDKRGEFMFDFDGDEIFHVDIEKSETIWRLEEFAKFASFEAQGALANIAVDKANLDVMKERSNNTPDANVAPEVTVLSRSPVNLGEPNILICFIDKFSPPVVNVTWLRNGRPVTEGVSETVFLPRDDHLFRKFHYLTFLPSTDDFYDCEVDHWGLEEPLRKHWEF 180
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180


Chain B from PDB  Type:PROTEIN  Length:165
 aligned with HB21_MOUSE | P04230 from UniProtKB/Swiss-Prot  Length:264

    Alignment length:184
                                    39        49        59        69        79        89        99       109       119       129       139       149       159       169       179       189       199       209    
           HB21_MOUSE    30 SRPWFLEYCKSECHFYNGTQRVRLLERYFYNLEENLRFDSDVGEFHAVTELGRPDAENWNSQPEFLEQKRAEVDTVCRHNYEISDKFLVRRRVEPTVTVYPTKTQPLEHHNLLVCSVSDFYPGNIEVRWFRNGKEEKTGIVSTGLVRNGDWTFQTLVMLETVPQSGEVYTCQVEHPSLTDPVTV 213
               SCOP domains d3qibb1 B:3-93 automated matches                                                           d3qibb2 B:          94-186 automated m  atches                                                SCOP domains
               CATH domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ----------MHC_II_beta-3qibB02 B:13-87                                                ---------------C          1-set-3qibB01 B:10  3-185                                               - Pfam domains
         Sec.struct. author ....eeeeeeeeeee.hhhh.eeeeeeeee..eeeeeee.....eee.hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.......eeeee.----------.eeeeeeee.....eee.--........eee...ee.....eeeeeee...-------..eee.......ee. Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------IG_MHC --------- PROSITE
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3qib B   3 SRPWFLEYCKSECHFYNGTQRVRLLVRYFYNLEENLRFDSDVGEFRAVTELGRPDAENWNSQPEFLEQKRAEVDTVCRHNYEIFDNFLVPRRVEPTVTVYP----------LLVCSVSDFYPGNIEVRW--NGKEEKTGIVSTGLVRNGDWTFQTLVMLETV-------TCQVEHPSLTDPVTV 186
                                    12        22        32        42        52        62        72        82        92       102|        - |     122        |- |     142       152       162 |     172       182    
                                                                                                                              103        114              131  |                           164     172              
                                                                                                                                                             134                                                    


Chain B from PDB  Type:PROTEIN  Length:165
 aligned with Q31163_MOUSE | Q31163 from UniProtKB/TrEMBL  Length:263

    Alignment length:184
                                    38        48        58        68        78        88        98       108       118       128       138       148       158       168       178       188       198       208    
         Q31163_MOUSE    29 SRPWFLEYCKSECHFYNGTQRVRLLVRYFYNLEENLRFDSDVGEFRAVTELGRPDAENWNSQPEFLEQKRAEVDTVCRHNYEIFDNFLVPRRVEPTVTVYPTKTQPLEHHNLLVCSVSDFYPGNIEVRWFRNGKEEKTGIVSTGLVRNGDWTFQTLVMLETVPQSGEVYTCQVEHPSLTDPVTV 212
               SCOP domains d3qibb1 B:3-93 automated matches                                                           d3qibb2 B:          94-186 automated m  atches                                                SCOP domains
               CATH domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ----------MHC_II_beta-3qibB02 B:13-87                                                ---------------C          1-set-3qibB01 B:10  3-185                                               - Pfam domains
         Sec.struct. author ....eeeeeeeeeee.hhhh.eeeeeeeee..eeeeeee.....eee.hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.......eeeee.----------.eeeeeeee.....eee.--........eee...ee.....eeeeeee...-------..eee.......ee. Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3qib B   3 SRPWFLEYCKSECHFYNGTQRVRLLVRYFYNLEENLRFDSDVGEFRAVTELGRPDAENWNSQPEFLEQKRAEVDTVCRHNYEIFDNFLVPRRVEPTVTVYP----------LLVCSVSDFYPGNIEVRW--NGKEEKTGIVSTGLVRNGDWTFQTLVMLETV-------TCQVEHPSLTDPVTV 186
                                    12        22        32        42        52        62        72        82        92       102|        - |     122        |- |     142       152       162 |     172       182    
                                                                                                                              103        114              131  |                           164     172              
                                                                                                                                                             134                                                    


Chain C from PDB  Type:PROTEIN  Length:194
 aligned with TCA_HUMAN | P01848 from UniProtKB/Swiss-Prot  Length:142

    Alignment length:200
                                                                                                                                        1                                                                                           
                                     -         -         -         -         -         -         -         -         -         -        |2        12        22        32        42        52        62        72        82        92
            TCA_HUMAN     - ------------------------------------------------------------------------------------------------------------PNIQNPDPAVYQLRDSKSSDKSVCLFTDFDSQTNVSQSKDSDVYITDKTVLDMRSMDFKSNSAVAWSNKSDFACANAFNNSIIPEDTFFPSP  92
               SCOP domains d3qibc1 C:2-111 automated matches                                                                             d3qibc2 C:112-201 automated matches                                                        SCOP domains
               CATH domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .eeee..eeeee....eeeeeee......eeeeee.....eeeeeee...eeee..eeeeee....eeeeee...hhhhheeeeeee..........ee...eeeeee........eeeeeee......eeeeee..........--....ee...eeeee....eeeeeeeee.----.hhhhhh.............. Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3qib C   2 QVEQSPSALSLHEGTGSALRCNFTTTMRAVQWFQQNSRGSLINLFYLASGTKENGRLKSTFNSKESYSTLHIRDAQLEDSGTYFCAALRATGGNNKLTFGQGTVLSVIPDIQNPDPAVYQLRDSKSSDKSVCLFTDFDSQTNVSQ--DSDVYITDKCVLDMRSMDFKSNSAVAWS----FACANAFNNSIIPEDTFFPSP 201
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141    |  151       161       171    |  181       191       201
                                                                                                                                                                          146  |                        176  181                    
                                                                                                                                                                             149                                                    


Chain D from PDB  Type:PROTEIN  Length:242
                                                                                                                                                                                                                                                                                  
               SCOP domains d3qibd1 D:2-116 automated matches                                                                                  d3qibd2 D:117-243 automated matches                                                                                             SCOP domains
               CATH domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...eee..eeeee....eeeeee......eeeeeee.....eeeeeeee..eeeeehhhhhhheeee......eeeee...hhhhheeeeeeee........ee...eeeeee.........eeeeee.hhhhhhhhheeeeeeeeeee....eeeeeee..eee...eee....ee.........eeeeeeeeeehhhhhh...eeeeeeee..................eeeeeeee... Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3qib D   2 MKVIQTPRYLVKGQGQKAKMRCIPEKGHPVVFWYQQNKNNEFKFLINFQNQEVLQQIDMTEKRFSAECPSNSPCSLEIQSSEAGDSALYLCASSLNWSQDTQYFGPGTRLLVLEDLKNVFPPEVAVFEPSEAEISHTQKATLVCLATGFYPDHVELSWWVNGKEVHSGVCTDPQPLKEQPALNDSRYALSSRLRVSATFWQNPRNHFRCQVQFYGLSENDEWTQDRAKPVTQIVSAEAWGRA 243
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241  


Chain P from PDB  Type:PROTEIN  Length:13
 aligned with CYC_MANSE | P00039 from UniProtKB/Swiss-Prot  Length:108

    Alignment length:13
                                     108 
                                   106 | 
            CYC_MANSE    97 ADLIAYLKQATK-   -
               SCOP domains ------------- SCOP domains
               CATH domains ------------- CATH domains
               Pfam domains Cytochrom_C-- Pfam domains
         Sec.struct. author .ee.......... Sec.struct. author
                 SAPs(SNPs) ------------- SAPs(SNPs)
                    PROSITE ------------- PROSITE
                 Transcript ------------- Transcript
                 3qib P   2 ADLIAYLKQATKG  14
                                    11
   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  (6, 8)

Asymmetric/Biological Unit
(-)
Class: All beta proteins (24004)
(-)
Class: Alpha and beta proteins (a+b) (23004)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 3QIB)

(-) Pfam Domains  (4, 5)

Asymmetric/Biological Unit
(-)
Clan: Cytochrome-c (108)
(-)
Clan: Ig (577)
(-)
Family: C1-set (338)
(-)
Clan: MHC (252)

(-) Gene Ontology  (23, 39)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (HA22_MOUSE | P04224)
biological process
    GO:0019882    antigen processing and presentation    The process in which an antigen-presenting cell expresses antigen (peptide or lipid) on its cell surface in association with an MHC protein complex.
    GO:0002504    antigen processing and presentation of peptide or polysaccharide antigen via MHC class II    The process in which an antigen-presenting cell expresses antigen (peptide or polysaccharide) on its cell surface in association with an MHC class II protein complex.
    GO:0006955    immune response    Any immune system process that functions in the calibrated response of an organism to a potential internal or invasive threat.
    GO:0002376    immune system process    Any process involved in the development or functioning of the immune system, an organismal system for calibrated responses to potential internal or invasive threats.
cellular component
    GO:0042613    MHC class II protein complex    A transmembrane protein complex composed of an MHC class II alpha and MHC class II beta chain, and with or without a bound peptide or polysaccharide antigen.
    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.

Chain B   (HB21_MOUSE | P04230)
biological process
    GO:0019882    antigen processing and presentation    The process in which an antigen-presenting cell expresses antigen (peptide or lipid) on its cell surface in association with an MHC protein complex.
    GO:0019886    antigen processing and presentation of exogenous peptide antigen via MHC class II    The process in which an antigen-presenting cell expresses a peptide antigen of exogenous origin on its cell surface in association with an MHC class II protein complex. The peptide antigen is typically, but not always, processed from a whole protein.
    GO:0002504    antigen processing and presentation of peptide or polysaccharide antigen via MHC class II    The process in which an antigen-presenting cell expresses antigen (peptide or polysaccharide) on its cell surface in association with an MHC class II protein complex.
    GO:0006955    immune response    Any immune system process that functions in the calibrated response of an organism to a potential internal or invasive threat.
    GO:0002376    immune system process    Any process involved in the development or functioning of the immune system, an organismal system for calibrated responses to potential internal or invasive threats.
cellular component
    GO:0042613    MHC class II protein complex    A transmembrane protein complex composed of an MHC class II alpha and MHC class II beta chain, and with or without a bound peptide or polysaccharide antigen.
    GO:0070062    extracellular exosome    A vesicle that is released into the extracellular region by fusion of the limiting endosomal membrane of a multivesicular body with the plasma membrane. Extracellular exosomes, also simply called exosomes, have a diameter of about 40-100 nm.
    GO:0005615    extracellular space    That part of a multicellular organism outside the cells proper, usually taken to be outside the plasma membranes, and occupied by fluid.
    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:0031902    late endosome membrane    The lipid bilayer surrounding a late endosome.
    GO:0005765    lysosomal membrane    The lipid bilayer surrounding the lysosome and separating its contents from the cell cytoplasm.
    GO:0016020    membrane    A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.

Chain B   (Q31163_MOUSE | Q31163)
biological process
    GO:0019882    antigen processing and presentation    The process in which an antigen-presenting cell expresses antigen (peptide or lipid) on its cell surface in association with an MHC protein complex.
    GO:0002504    antigen processing and presentation of peptide or polysaccharide antigen via MHC class II    The process in which an antigen-presenting cell expresses antigen (peptide or polysaccharide) on its cell surface in association with an MHC class II protein complex.
    GO:0006955    immune response    Any immune system process that functions in the calibrated response of an organism to a potential internal or invasive threat.
    GO:0002376    immune system process    Any process involved in the development or functioning of the immune system, an organismal system for calibrated responses to potential internal or invasive threats.
cellular component
    GO:0042613    MHC class II protein complex    A transmembrane protein complex composed of an MHC class II alpha and MHC class II beta chain, and with or without a bound peptide or polysaccharide antigen.
    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.

Chain C   (TCA_HUMAN | P01848)
biological process
    GO:0031295    T cell costimulation    The process of providing, via surface-bound receptor-ligand pairs, a second, antigen-independent, signal in addition to that provided by the T cell receptor to augment T cell activation.
    GO:0050852    T cell receptor signaling pathway    A series of molecular signals initiated by the cross-linking of an antigen receptor on a T cell.
    GO:0050776    regulation of immune response    Any process that modulates the frequency, rate or extent of the immune response, the immunological reaction of an organism to an immunogenic stimulus.
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 P   (CYC_MANSE | P00039)
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.
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.
cellular component
    GO:0005758    mitochondrial intermembrane space    The region between the inner and outer lipid bilayers of the mitochondrial envelope.
    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.

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  3qib
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 Related Entries

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

UniProtKB/Swiss-Prot
        CYC_MANSE | P00039: 3qiu 3qiw
        HA22_MOUSE | P04224: 1fne 1fng 1i3r 1r5v 1r5w 3qiu 3qiw 4p2o 4p2q 4p2r
        HB21_MOUSE | P04230: 1kt2 3qiu 3qiw
        Q31163_MOUSE | Q31163: 1ktd 3qiu 3qiw
        TCA_HUMAN | P01848: 1ao7 1bd2 1fyt 1j8h 1kgc 1mi5 1oga 1qrn 1qsf 1ymm 1zgl 2ak4 2bnq 2bnr 2bnu 2cdf 2cdg 2esv 2eyr 2eys 2eyt 2f53 2f54 2gj6 2ial 2iam 2ian 2nx5 2p5e 2p5w 2po6 2pye 2pyf 2vlj 2vlk 2vlm 2vlr 2xn9 2xna 3arb 3ard 3are 3arf 3arg 3d39 3dx9 3dxa 3ffc 3gsn 3he7 3hg1 3kpr 3kps 3kxf 3o4l 3o6f 3o8x 3o9w 3pwp 3qdg 3qdj 3qdm 3qeq 3qeu 3qjf 3qux 3scm 3sda 3sdc 3sdd 3sdx 3sjv 3skn 3t0e 3tn0 3tvm 4apq 4c56 4g8e 4g8f 4irs 4jfd 4jfe 4jff 4jfh 4jrx 4jry 4mvb 4mxq 4n0c 4n5e 4nhu 4onh 4p4k 4prh 4pri 4prp 4udt 4udu 4ww1 4ww2 4wwk 4x6b 4x6c 4x6d 4y16 4y2d 4y4f 4y4h 4y4k 4zdh 4zez 5brz 5bs0 5c07 5c08 5c09 5c0a 5c0b 5c0c 5eu6 5fk9 5fka 5hhm 5hho 5hyj 5ks9 5ksa 5ksb
UniProtKB/TrEMBL
        Q31163_MOUSE | Q31163: 1iea 4p2o 4p2q 4p2r

(-) Related Entries Specified in the PDB File

3qiw