Annotations: 6XC9

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d6xc9a2	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	d6xc9a1	Alpha and beta proteins (a+b)	MHC antigen-recognition domain	MHC antigen-recognition domain	automated matches	automated matches	Human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
A	d6xc9a3	Artifacts	Tags	Tags	Tags	C-terminal Tags	Human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
E [auth F]	d6xc9f2	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)
E [auth F]	d6xc9f1	Alpha and beta proteins (a+b)	MHC antigen-recognition domain	MHC antigen-recognition domain	automated matches	automated matches	Human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
C [auth D]	d6xc9d2	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)
C [auth D]	d6xc9d1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	Human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
G [auth I]	d6xc9i2	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)
G [auth I]	d6xc9i1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	Human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
D [auth E]	d6xc9e2	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)
D [auth E]	d6xc9e1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	Human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
H [auth J]	d6xc9j2	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)
H [auth J]	d6xc9j1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	automated matches	automated matches	Human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
F [auth H]	PF07654	e6xc9H1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF07654	ECOD (1.6)
F [auth H]	PF00969	e6xc9H2	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: PF00969	ECOD (1.6)
B [auth C]	PF07654	e6xc9C1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF07654	ECOD (1.6)
B [auth C]	PF00969	e6xc9C2	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: PF00969	ECOD (1.6)
A	PF07654	e6xc9A1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF07654	ECOD (1.6)
A	PF00993	e6xc9A2	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: PF00993	ECOD (1.6)
E [auth F]	PF07654	e6xc9F1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF07654	ECOD (1.6)
E [auth F]	PF00993	e6xc9F2	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: PF00993	ECOD (1.6)
C [auth D]	PF07686	e6xc9D1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF07686	ECOD (1.6)
C [auth D]	PF09291	e6xc9D2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF09291	ECOD (1.6)
G [auth I]	PF07686	e6xc9I1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF07686	ECOD (1.6)
G [auth I]	PF09291	e6xc9I2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF09291	ECOD (1.6)
D [auth E]	PF07654	e6xc9E2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF07654	ECOD (1.6)
D [auth E]	PF07686	e6xc9E1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF07686	ECOD (1.6)
H [auth J]	PF07654	e6xc9J2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF07654	ECOD (1.6)
H [auth J]	PF07686	e6xc9J1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF07686	ECOD (1.6)

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
B [auth C], F [auth H]	MH2 HLA-DQA1*0301	II-BETA	Homo sapiens (human)	HLA-DQB1*0302	G-DOMAIN G-BETA, C-LIKE-DOMAIN C-LIKE	MH	MH2-ALPHA_BETA	IMGT (202417-0)
A, E [auth F]	MH2 HLA-DQA1*0301	II-ALPHA	Homo sapiens (human)	HLA-DQA10301, HLA-DQA10302, HLA-DQA1*0303	G-DOMAIN G-ALPHA, C-LIKE-DOMAIN C-LIKE	MH	MH2-ALPHA_BETA	IMGT (202417-0)
C [auth D], G [auth I]	TR A3.10	TR-ALPHA	Homo sapiens (human)	TRAV38-103, TRAJ5401, TRAC*01	V-DOMAIN V-ALPHA, C-DOMAIN C-ALPHA	TR	TR-ALPHA_BETA-2	IMGT (202417-0)
D [auth E], H [auth J]	TR A3.10	TR-BETA-2	Homo sapiens (human)	TRBV5-101, TRBJ2-301, TRBC201, TRBC202	V-DOMAIN V-BETA, C-DOMAIN C-BETA-2	TR	TR-ALPHA_BETA-2	IMGT (202417-0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
B [auth C], F [auth H]	PF00969	Class II histocompatibility antigen, beta domain (MHC_II_beta)	Class II histocompatibility antigen, beta domain	-	Domain
B [auth C], F [auth H]	PF07654	Immunoglobulin C1-set domain (C1-set)	Immunoglobulin C1-set domain	-	Domain
A, E [auth F]	PF07654	Immunoglobulin C1-set domain (C1-set)	Immunoglobulin C1-set domain	-	Domain
A, E [auth F]	PF00993	Class II histocompatibility antigen, alpha domain (MHC_II_alpha)	Class II histocompatibility antigen, alpha domain	-	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B [auth C], F [auth H]	Hybrid Insulin Peptide, MHC class II HLA-DQ-beta chain fusion	-	antigen processing and presentation antigen processing and presentation of peptide or polysaccharide antigen via MHC class II immune system process response to stimulus immune response adaptive immune response	vacuolar membrane membrane-bounded organelle intracellular anatomical structure membrane lytic vacuole vacuole cellular anatomical entity intracellular membrane-bounded organelle intracellular organelle lytic vacuole membrane bounding membrane of organelle organelle lysosomal membrane cytoplasm vacuolar membrane membrane-bounded organelle intracellular anatomical structure membrane lytic vacuole vacuole cellular anatomical entity intracellular membrane-bounded organelle intracellular organelle lytic vacuole membrane bounding membrane of organelle organelle lysosomal membrane cytoplasm organelle membrane lysosome MHC protein complex cell periphery MHC class II protein complex protein-containing complex plasma membrane protein complex plasma membrane membrane protein complex endosome membrane endosome intracellular vesicle endomembrane system cytoplasmic vesicle membrane vesicle membrane cytoplasmic vesicle vesicle
A, E [auth F]	MHC class II HLA-DQ-alpha chain	-	antigen processing and presentation antigen processing and presentation of peptide or polysaccharide antigen via MHC class II immune system process response to stimulus immune response adaptive immune response	vacuolar membrane membrane-bounded organelle intracellular anatomical structure membrane lytic vacuole vacuole cellular anatomical entity intracellular membrane-bounded organelle intracellular organelle lytic vacuole membrane bounding membrane of organelle organelle lysosomal membrane cytoplasm vacuolar membrane membrane-bounded organelle intracellular anatomical structure membrane lytic vacuole vacuole cellular anatomical entity intracellular membrane-bounded organelle intracellular organelle lytic vacuole membrane bounding membrane of organelle organelle lysosomal membrane cytoplasm organelle membrane lysosome MHC protein complex cell periphery MHC class II protein complex protein-containing complex plasma membrane protein complex plasma membrane membrane protein complex endosome membrane endosome intracellular vesicle endomembrane system cytoplasmic vesicle membrane vesicle membrane cytoplasmic vesicle vesicle
C [auth D], G [auth I]	T-CELL-RECEPTOR, A3.10-alpha chain	-	-	-
D [auth E], H [auth J]	T-CELL-RECEPTOR, A3.10-beta chain	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B [auth C], F [auth H]	IPR000353	MHC class II, beta chain, N-terminal	Domain
B [auth C], F [auth H]	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
B [auth C], F [auth H]	IPR014745	MHC class II, alpha/beta chain, N-terminal	Homologous Superfamily
B [auth C], F [auth H]	IPR003597	Immunoglobulin C1-set	Domain
B [auth C], F [auth H]	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
B [auth C], F [auth H]	IPR011162	MHC classes I/II-like antigen recognition protein	Homologous Superfamily
B [auth C], F [auth H]	IPR007110	Immunoglobulin-like domain	Domain
B [auth C], F [auth H]	IPR003006	Immunoglobulin/major histocompatibility complex, conserved site	Conserved Site
A, E [auth F]	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
A, E [auth F]	IPR014745	MHC class II, alpha/beta chain, N-terminal	Homologous Superfamily
A, E [auth F]	IPR003597	Immunoglobulin C1-set	Domain
A, E [auth F]	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A, E [auth F]	IPR011162	MHC classes I/II-like antigen recognition protein	Homologous Superfamily
A, E [auth F]	IPR007110	Immunoglobulin-like domain	Domain
A, E [auth F]	IPR001003	MHC class II, alpha chain, N-terminal	Domain
A, E [auth F]	IPR003006	Immunoglobulin/major histocompatibility complex, conserved site	Conserved Site

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.