1FNG

HISTOCOMPATIBILITY ANTIGEN

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	d1fngc1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	C1 set domains (antibody constant domain-like)	Class II MHC alpha chain, C-terminal domain	house mouse (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
C	d1fngc2	Alpha and beta proteins (a+b)	MHC antigen-recognition domain	MHC antigen-recognition domain	MHC antigen-recognition domain	Class II MHC alpha chain, N-terminal domain	house mouse (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
A	d1fnga1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	C1 set domains (antibody constant domain-like)	Class II MHC alpha chain, C-terminal domain	house mouse (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
A	d1fnga2	Alpha and beta proteins (a+b)	MHC antigen-recognition domain	MHC antigen-recognition domain	MHC antigen-recognition domain	Class II MHC alpha chain, N-terminal domain	house mouse (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
B	d1fngb1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	C1 set domains (antibody constant domain-like)	Class II MHC beta chain, C-terminal domain	house mouse (Mus musculus ) [TaxId: 10090 ], house mouse (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
B	d1fngb2	Alpha and beta proteins (a+b)	MHC antigen-recognition domain	MHC antigen-recognition domain	MHC antigen-recognition domain	Class II MHC beta chain, N-terminal domain	house mouse (Mus musculus ) [TaxId: 10090 ], house mouse (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
D	d1fngd1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	C1 set domains (antibody constant domain-like)	Class II MHC beta chain, C-terminal domain	house mouse (Mus musculus ) [TaxId: 10090 ], house mouse (Mus musculus ) [TaxId: 10090 ],	SCOPe (2.08)
D	d1fngd2	Alpha and beta proteins (a+b)	MHC antigen-recognition domain	MHC antigen-recognition domain	MHC antigen-recognition domain	Class II MHC beta chain, N-terminal domain	house mouse (Mus musculus ) [TaxId: 10090 ], house mouse (Mus musculus ) [TaxId: 10090 ],	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	8054673	3000071	SCOP2B (2022-06-29)
C	SCOP2B Superfamily	MHC antigen-recognition domain	8033118	3000521	SCOP2B (2022-06-29)
A	SCOP2 Family	MHC antigen-recognition domain	8020738	4001031	SCOP2 (2022-06-29)
A	SCOP2 Family	C1 set domains-like	8054672	4000202	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	MHC antigen-recognition domain	8033118	3000521	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Immunoglobulin (Ig) domain-like	8054673	3000071	SCOP2 (2022-06-29)
B	SCOP2 Family	MHC antigen-recognition domain	8020740	4001031	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	MHC antigen-recognition domain	8033120	3000521	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	Immunoglobulin (Ig) domain-like	8054709	3000071	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Immunoglobulin (Ig) domain-like	8054709	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	e1fngC1	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_II_alpha	e1fngC2	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_II_alpha	ECOD (1.6)
A	C1-set_2	e1fngA1	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)
A	MHC_II_alpha	e1fngA2	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_II_alpha	ECOD (1.6)
B	C1-set_2	e1fngB1	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)
D	C1-set_2	e1fngD1	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)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
C	3.10.320.10	Alpha Beta	Roll	Class II Histocompatibility Antigen, M Beta Chain	Chain B, domain 1	CATH (4.3.0)
C	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
A	3.10.320.10	Alpha Beta	Roll	Class II Histocompatibility Antigen, M Beta Chain	Chain B, domain 1	CATH (4.3.0)
A	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
B	3.10.320.10	Alpha Beta	Roll	Class II Histocompatibility Antigen, M Beta Chain	Chain B, domain 1	CATH (4.3.0)
B	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
D	3.10.320.10	Alpha Beta	Roll	Class II Histocompatibility Antigen, M Beta Chain	Chain B, domain 1	CATH (4.3.0)
D	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
A, C	pMHC75	II-ALPHA	Mus musculus (house mouse)	MH2-AAe, H2-EAck, H2-EAk	G-DOMAIN G-ALPHA, C-LIKE-DOMAIN C-LIKE	MH	MH2-ALPHA_PEPTIDE-BETA	IMGT (202442-0)
B, D	pMHC75	PEPTIDE-II-BETA	Mus musculus (house mouse)	H2-EB1b-EB24	G-DOMAIN G-BETA, C-LIKE-DOMAIN C-LIKE	MH	MH2-ALPHA_PEPTIDE-BETA	IMGT (202442-0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, C	PF07654	Immunoglobulin C1-set domain (C1-set)	Immunoglobulin C1-set domain	-	Domain
A, C	PF00993	Class II histocompatibility antigen, alpha domain (MHC_II_alpha)	Class II histocompatibility antigen, alpha domain	-	Domain
B, D	PF00969	Class II histocompatibility antigen, beta domain (MHC_II_beta)	Class II histocompatibility antigen, beta domain	-	Domain
B, D	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
A, C	PROTEIN (MHC CLASS II I-EK, ALPHA CHAIN)	binding antigen binding peptide antigen binding peptide binding protein-containing complex binding MHC protein complex binding MHC class II protein complex binding	regulation of biological process response to stimulus immune response biological regulation positive regulation of biological process positive regulation of response to stimulus positive regulation of immune response regulation of response to stimulus immune system process regulation of immune response regulation of immune system process positive regulation of immune system process peptide antigen assembly with MHC class II protein complex protein-containing complex organization regulation of biological process response to stimulus immune response biological regulation positive regulation of biological process positive regulation of response to stimulus positive regulation of immune response regulation of response to stimulus immune system process regulation of immune response regulation of immune system process positive regulation of immune system process 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 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 cellular process MHC protein complex assembly cellular component organization or biogenesis antigen processing and presentation of peptide antigen adaptive immune response 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 multicellular organismal process regulation of cellular process regulation of leukocyte activation regulation of cell activation positive regulation of leukocyte cell-cell adhesion lymphocyte activation leukocyte cell-cell adhesion leukocyte activation positive regulation of cell-cell adhesion positive regulation of lymphocyte activation positive regulation of cell activation cell adhesion cell-cell adhesion T cell activation positive regulation of leukocyte activation regulation of multicellular organismal process regulation of cell-cell adhesion positive regulation of cellular process positive regulation of T cell activation positive regulation of cell adhesion regulation of cell adhesion cell activation regulation of T cell activation regulation of leukocyte cell-cell adhesion positive regulation of multicellular organismal process regulation of lymphocyte activation	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 late endosome membrane endomembrane system cytoplasmic vesicle membrane cytoplasmic vesicle vesicle membrane late endosome vesicle
B, D	PROTEIN (MHC CLASS II I-EK, BETA CHAIN)	oxygen binding binding small molecule binding hemoglobin binding protein binding hemoglobin alpha binding protein-containing complex binding oxygen carrier activity molecular carrier activity organic cyclic compound binding tetrapyrrole binding heme binding hemoglobin beta binding organic acid binding oxygen binding binding small molecule binding hemoglobin binding protein binding hemoglobin alpha binding protein-containing complex binding oxygen carrier activity molecular carrier activity organic cyclic compound binding tetrapyrrole binding heme binding hemoglobin beta binding organic acid binding cation binding ion binding metal ion binding	cellular catabolic process catabolic process cellular metabolic process hydrogen peroxide metabolic process reactive oxygen species metabolic process metabolic process cellular process hydrogen peroxide catabolic process oxygen transport localization transport gas transport establishment of localization one-carbon compound transport cellular catabolic process catabolic process cellular metabolic process hydrogen peroxide metabolic process reactive oxygen species metabolic process metabolic process cellular process hydrogen peroxide catabolic process oxygen transport localization transport gas transport establishment of localization one-carbon compound transport carbon dioxide transport nitric oxide transport nitrogen compound transport developmental process multicellular organismal process erythrocyte development cellular developmental process homeostatic process hemopoiesis cell development erythrocyte differentiation multicellular organismal-level homeostasis myeloid cell differentiation immune system process cell differentiation anatomical structure development myeloid cell development homeostasis of number of cells myeloid cell homeostasis erythrocyte homeostasis regulation of cellular process regulation of developmental process positive regulation of biological process regulation of cell differentiation regulation of cell development positive regulation of developmental process multicellular organism development positive regulation of cell differentiation regulation of immune system process regulation of multicellular organismal process positive regulation of cellular process regulation of biological process regulation of multicellular organismal development regulation of myeloid cell differentiation biological regulation positive regulation of myeloid cell differentiation regulation of hemopoiesis regulation of erythrocyte differentiation cellular response to stimulus cellular detoxification cellular response to chemical stimulus response to stimulus response to chemical detoxification cellular oxidant detoxification cellular response to toxic substance response to toxic substance antigen processing and presentation of exogenous peptide antigen via MHC class II antigen processing and presentation antigen processing and presentation of peptide or polysaccharide antigen via MHC class II antigen processing and presentation of peptide antigen via MHC class II antigen processing and presentation of exogenous peptide antigen antigen processing and presentation of peptide antigen antigen processing and presentation of exogenous antigen immune response adaptive immune response	protein-containing complex intracellular anatomical structure hemoglobin complex cytoplasm cellular anatomical entity cytosol haptoglobin-hemoglobin complex MHC protein complex cell periphery MHC class II protein complex plasma membrane protein complex membrane plasma membrane membrane protein complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, C	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
A, C	IPR050160	Major Histocompatibility Complex/Immunoglobulin	Family
A, C	IPR014745	MHC class II, alpha/beta chain, N-terminal	Homologous Superfamily
A, C	IPR003597	Immunoglobulin C1-set	Domain
A, C	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A, C	IPR011162	MHC classes I/II-like antigen recognition protein	Homologous Superfamily
A, C	IPR007110	Immunoglobulin-like domain	Domain
A, C	IPR001003	MHC class II, alpha chain, N-terminal	Domain
A, C	IPR003006	Immunoglobulin/major histocompatibility complex, conserved site	Conserved Site
B, D	IPR050056	Hemoglobin and related oxygen transporters	Family
B, D	IPR009050	Globin-like superfamily	Homologous Superfamily
B, D	IPR012292	Globin/Protoglobin	Homologous Superfamily
B, D	IPR002337	Hemoglobin, beta-type	Family
B, D	IPR000971	Globin	Domain
B, D	IPR003597	Immunoglobulin C1-set	Domain
B, D	IPR000353	MHC class II, beta chain, N-terminal	Domain
B, D	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
B, D	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
B, D	IPR011162	MHC classes I/II-like antigen recognition protein	Homologous Superfamily
B, D	IPR007110	Immunoglobulin-like domain	Domain
B, D	IPR050160	Major Histocompatibility Complex/Immunoglobulin	Family
B, D	IPR003006	Immunoglobulin/major histocompatibility complex, conserved site	Conserved Site
B, D	IPR014745	MHC class II, alpha/beta chain, N-terminal	Homologous Superfamily