4IIQ | pdb_00004iiq

Crystal structure of a human MAIT TCR in complex with bovine MR1

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
IMGT Antibody Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
C	d4iiqc1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	bovine,cow,domestic cattle,domestic cow (Bos taurus ) [TaxId: 9913 ], bovine,cow,domestic cattle,domestic cow (Bos taurus ) [TaxId: 9913 ],	SCOPe (2.08)
C	d4iiqc2	Alpha and beta proteins (a+b)	MHC antigen-recognition domain	MHC antigen-recognition domain	automated matches	automated matches	bovine,cow,domestic cattle,domestic cow (Bos taurus ) [TaxId: 9913 ], bovine,cow,domestic cattle,domestic cow (Bos taurus ) [TaxId: 9913 ],	SCOPe (2.08)
B	d4iiqb2	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	C1 set domains (antibody constant domain-like)	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B	d4iiqb1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
A	d4iiqa2	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	C1 set domains (antibody constant domain-like)	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
A	d4iiqa1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
C	SCOP2B Superfamily	Immunoglobulin (Ig) domain-like	8054563	3000071	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Immunoglobulin (Ig) domain-like	8054555	3000071	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
C	C1-set_2	e4iiqC3	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: C1-set_2	ECOD (1.6)
C	MHC_I	e4iiqC1	A: a+b two layers	X: MHC antigen-recognition domain (From Topology)	H: MHC antigen-recognition domain (From Topology)	T: MHC antigen-recognition domain	F: MHC_I	ECOD (1.6)
B	C1-set	e4iiqB3	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: C1-set	ECOD (1.6)
B	V-set_3	e4iiqB4	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_3	ECOD (1.6)
A	DUF1968	e4iiqA2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: DUF1968	ECOD (1.6)
A	V-set_3	e4iiqA1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: V-set_3	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
C	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
C	3.30.500.10	Alpha Beta	2-Layer Sandwich	Murine Class I Major Histocompatibility Complex, H2-DB	Chain A, domain 1	CATH (4.3.0)
B	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
A	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)

IMGT Antibody Annotation IMGT Database Homepage

Chain	Protein Name	Description	Organism Name	Gene Allele Name(s)	Domain Name(s)	Receptor Type	Receptor Description	Provenance Source
C	MR1	G-ALPHA1-ALPHA2-LIKE	Bos taurus (bovine)	B2M01, MR101	C-LIKE-DOMAIN C-LIKE, G-DOMAIN G-ALPHA1-LIKE, G-DOMAIN G-ALPHA2-LIKE	RPI-MH1Like	B2M-MH1LIKE-ALPHA_LIKE	IMGT (202603-0)
B	TR F7 MAIT TRAV1-101-TRAJ3301, TRBV6-1*01	TR-BETA-2	Homo sapiens (human)	TRBV6-101, TRBJ2-201, TRBC201, TRBC202	V-DOMAIN V-BETA, C-DOMAIN C-BETA-2	TR	TR-ALPHA_BETA-2	IMGT (202603-0)
A	TR F7 MAIT TRAV1-101-TRAJ3301, TRBV6-1*01	TR-ALPHA	Homo sapiens (human)	TRAV1-201, TRAJ3301, TRAC*01	V-DOMAIN V-ALPHA, C-DOMAIN C-ALPHA	TR	TR-ALPHA_BETA-2	IMGT (202603-0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Source
C	PF00129	Class I Histocompatibility antigen, domains alpha 1 and 2 (MHC_I)	Class I Histocompatibility antigen, domains alpha 1 and 2	Domain
C	PF07654	Immunoglobulin C1-set domain (C1-set)	Immunoglobulin C1-set domain	Domain
B	PF07654	Immunoglobulin C1-set domain (C1-set)	Immunoglobulin C1-set domain	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C	Beta-2-microglobulin, MHC class I-related protein	beta-2-microglobulin binding protein binding binding protein-containing complex binding signaling receptor binding T cell receptor binding antigen binding peptide antigen binding peptide binding MHC protein complex binding MHC class II protein complex binding	response to stimulus immune response immune system process biological process involved in interspecies interaction between organisms response to other organism defense response defense response to symbiont response to external stimulus response to biotic stimulus defense response to other organism response to stress innate immune response response to external biotic stimulus developmental process response to stimulus immune response immune system process biological process involved in interspecies interaction between organisms response to other organism defense response defense response to symbiont response to external stimulus response to biotic stimulus defense response to other organism response to stress innate immune response response to external biotic stimulus developmental process multicellular organismal process cellular developmental process hemopoiesis cell activation cell development mononuclear cell differentiation lymphocyte activation lymphocyte differentiation leukocyte activation T cell differentiation in thymus T cell activation cell differentiation anatomical structure development T cell differentiation cellular process leukocyte differentiation defense response to Gram-negative bacterium defense response to bacterium response to bacterium antigen processing and presentation antigen processing and presentation of peptide antigen via MHC class I antigen processing and presentation of peptide antigen adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains lymphocyte mediated immunity regulation of immune effector process T cell mediated immunity positive regulation of leukocyte mediated immunity positive regulation of response to biotic stimulus regulation of cellular process immune response to tumor cell regulation of T cell mediated cytotoxicity directed against tumor cell target regulation of T cell mediated immune response to tumor cell positive regulation of immune response positive regulation of leukocyte mediated cytotoxicity leukocyte mediated immunity regulation of immune system process positive regulation of adaptive immune response positive regulation of immune system process regulation of T cell mediated immunity regulation of biological process positive regulation of immune response to tumor cell regulation of adaptive immune response leukocyte mediated cytotoxicity immune effector process regulation of leukocyte mediated immunity regulation of T cell mediated cytotoxicity regulation of response to stimulus regulation of immune response regulation of cell killing positive regulation of cell killing positive regulation of response to tumor cell regulation of response to biotic stimulus T cell mediated cytotoxicity directed against tumor cell target positive regulation of adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains positive regulation of lymphocyte mediated immunity positive regulation of biological process regulation of response to tumor cell positive regulation of response to stimulus T cell mediated immune response to tumor cell regulation of adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains positive regulation of immune effector process positive regulation of cellular process T cell mediated cytotoxicity response to tumor cell positive regulation of T cell mediated cytotoxicity biological regulation regulation of leukocyte mediated cytotoxicity regulation of immune response to tumor cell adaptive immune response positive regulation of T cell mediated immune response to tumor cell regulation of lymphocyte mediated immunity positive regulation of T cell mediated immunity positive regulation of T cell mediated cytotoxicity directed against tumor cell target cell killing defense response to Gram-positive bacterium peptide antigen assembly with MHC class II protein complex protein-containing complex organization peptide antigen assembly with MHC protein complex MHC class II protein complex assembly cellular component organization cellular component biogenesis antigen processing and presentation of peptide or polysaccharide antigen via MHC class II cellular component assembly protein-containing complex assembly antigen processing and presentation of peptide antigen via MHC class II MHC protein complex assembly cellular component organization or biogenesis response to metal ion response to chemical antigen processing and presentation of exogenous peptide antigen via MHC class II antigen processing and presentation of exogenous peptide antigen antigen processing and presentation of exogenous antigen regulation of leukocyte activation regulation of cell activation positive regulation of leukocyte cell-cell adhesion leukocyte cell-cell adhesion positive regulation of cell-cell adhesion positive regulation of lymphocyte activation positive regulation of cell activation cell adhesion cell-cell adhesion positive regulation of leukocyte activation regulation of multicellular organismal process regulation of cell-cell adhesion positive regulation of T cell activation positive regulation of cell adhesion regulation of cell adhesion regulation of T cell activation regulation of leukocyte cell-cell adhesion positive regulation of multicellular organismal process regulation of lymphocyte activation	cell periphery cellular anatomical structure cell surface membrane plasma membrane external side of plasma membrane side of membrane MHC class I protein complex MHC protein complex protein-containing complex plasma membrane protein complex membrane protein complex membrane-bounded organelle endosome membrane cell periphery cellular anatomical structure cell surface membrane plasma membrane external side of plasma membrane side of membrane MHC class I protein complex MHC protein complex protein-containing complex plasma membrane protein complex membrane protein complex membrane-bounded organelle endosome membrane intracellular anatomical structure endosome intracellular vesicle late endosome membrane intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle membrane bounding membrane of organelle cytoplasmic vesicle vesicle membrane organelle late endosome cytoplasm vesicle organelle membrane organelle subcompartment endoplasmic reticulum subcompartment nuclear outer membrane-endoplasmic reticulum membrane network endoplasmic reticulum endoplasmic reticulum membrane Golgi membrane Golgi apparatus early endosome early endosome membrane extracellular region extracellular space vacuolar membrane lytic vacuole vacuole lytic vacuole membrane lysosomal membrane lysosome MHC class II protein complex
B	Human Mucosal Associated Invariant T cell receptor beta chain	-	cellular response to stimulus immune response-regulating cell surface receptor signaling pathway regulation of cellular process response to stimulus signaling positive regulation of biological process cell communication positive regulation of response to stimulus immune response-activating signaling pathway immune response-regulating signaling pathway positive regulation of immune response regulation of immune system process signal transduction positive regulation of immune system process cellular response to stimulus immune response-regulating cell surface receptor signaling pathway regulation of cellular process response to stimulus signaling positive regulation of biological process cell communication positive regulation of response to stimulus immune response-activating signaling pathway immune response-regulating signaling pathway positive regulation of immune response regulation of immune system process signal transduction positive regulation of immune system process regulation of biological process cell surface receptor signaling pathway immune response-activating cell surface receptor signaling pathway immune response biological regulation T cell receptor signaling pathway regulation of response to stimulus immune system process regulation of immune response cellular process antigen receptor-mediated signaling pathway activation of immune response adaptive immune response multicellular organismal process T cell activation cell activation alpha-beta T cell activation lymphocyte activation leukocyte activation	cell periphery cellular anatomical structure plasma membrane membrane protein-containing complex plasma membrane protein complex membrane protein complex alpha-beta T cell receptor complex receptor complex plasma membrane signaling receptor complex T cell receptor complex
A	Human Mucosal Associated Invariant T cell receptor alpha chain	-	response to stimulus immune response immune system process adaptive immune response	cell periphery protein-containing complex cellular anatomical structure plasma membrane protein complex membrane plasma membrane plasma membrane signaling receptor complex membrane protein complex T cell receptor complex receptor complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
C	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
C	IPR050208	Antigen-presenting and immune regulatory MHC class I-related	Family
C	IPR003597	Immunoglobulin C1-set	Domain
C	IPR011161	MHC class I-like antigen recognition-like	Domain
C	IPR011162	MHC classes I/II-like antigen recognition protein	Homologous Superfamily
C	IPR001039	MHC class I alpha chain, alpha1 alpha2 domains	Domain
C	IPR003006	Immunoglobulin/major histocompatibility complex, conserved site	Conserved Site
C	IPR037055	MHC class I-like antigen recognition-like superfamily	Homologous Superfamily
C	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
C	IPR007110	Immunoglobulin-like domain	Domain
C	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
C	IPR050160	Major Histocompatibility Complex/Immunoglobulin	Family
C	IPR003597	Immunoglobulin C1-set	Domain
C	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
C	IPR015707	Beta-2-Microglobulin	Family
C	IPR007110	Immunoglobulin-like domain	Domain
C	IPR003006	Immunoglobulin/major histocompatibility complex, conserved site	Conserved Site
B	IPR003597	Immunoglobulin C1-set	Domain
B	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
B	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
B	IPR007110	Immunoglobulin-like domain	Domain
B	IPR050380	Immune Recognition and Response Modulators	Family
A	IPR052051	T cell receptor complex component	Family
A	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
A	IPR013106	Immunoglobulin V-set domain	Domain
A	IPR003599	Immunoglobulin domain subtype	Domain
A	IPR007110	Immunoglobulin-like domain	Domain
A	IPR015370	T-cell receptor alpha chain, constant domain	Domain