Annotations: 1IAK

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1iaka1	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	d1iaka2	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	d1iakb1	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 ],	SCOPe (2.08)
B	d1iakb2	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 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	MHC antigen-recognition domain	8022361	4001031	SCOP2 (2022-06-29)
A	SCOP2 Family	C1 set domains-like	8054680	4000202	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	MHC antigen-recognition domain	8034741	3000521	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Immunoglobulin (Ig) domain-like	8054681	3000071	SCOP2 (2022-06-29)
B	SCOP2 Family	MHC antigen-recognition domain	8022358	4001031	SCOP2 (2022-06-29)
B	SCOP2 Family	C1 set domains-like	8054718	4000202	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	MHC antigen-recognition domain	8034738	3000521	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	Immunoglobulin (Ig) domain-like	8054719	3000071	SCOP2 (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Copper-bind	e1iakA1	A: a/b three-layered sandwiches	X: Phage tail fiber protein trimerization domain	H: beta-Prism I	T: beta-Prism I	F: Copper-bind	ECOD (v294.1)
A	MHC_I_3	e1iakA2	A: a/b three-layered sandwiches	X: ETN0001 domain-like	H: ETN0001 domain-like	T: Mss4-like	F: MHC_I_3	ECOD (v294.1)
B	Copper-bind	e1iakB1	A: a/b three-layered sandwiches	X: Phage tail fiber protein trimerization domain	H: beta-Prism I	T: beta-Prism I	F: Copper-bind	ECOD (v294.1)
B	DNA_pol_B_exo1	e1iakB2	A: a/b three-layered sandwiches	X: P-loop domains-like	H: Hemagglutinin HA2 chain	T: Hemagglutinin HA2 chain	F: DNA_pol_B_exo1	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
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)

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	MH2-AA*02_H2-ABk	II-ALPHA	Mus musculus (house mouse)	MH2-AA*02	G-DOMAIN G-ALPHA, C-LIKE-DOMAIN C-LIKE	MH	MH2-ALPHA_BETA	IMGT (202611-0)
B	MH2-AA*02_H2-ABk	II-BETA	Mus musculus (house mouse)	H2-ABk	G-DOMAIN G-BETA, C-LIKE-DOMAIN C-LIKE	MH	MH2-ALPHA_BETA	IMGT (202611-0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Source
A	PF07654	Immunoglobulin C1-set domain (C1-set)	Immunoglobulin C1-set domain	Domain
A	PF00993	Class II histocompatibility antigen, alpha domain (MHC_II_alpha)	Class II histocompatibility antigen, alpha domain	Domain
B	PF00969	Class II histocompatibility antigen, beta domain (MHC_II_beta)	Class II histocompatibility antigen, beta 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
A	MHC CLASS II I-AK	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 adaptive immune response antigen processing and presentation of exogenous peptide antigen via MHC class II 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 adaptive immune response 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 negative regulation of lymphocyte proliferation multicellular organismal process regulation of cellular process regulation of leukocyte activation negative regulation of biological process regulation of cell activation negative regulation of T cell proliferation negative regulation of cell adhesion negative regulation of leukocyte proliferation T cell activation lymphocyte proliferation regulation of leukocyte proliferation cell population proliferation negative regulation of T cell activation negative regulation of leukocyte cell-cell adhesion regulation of cell population proliferation mononuclear cell proliferation negative regulation of cell-cell adhesion regulation of leukocyte cell-cell adhesion negative regulation of multicellular organismal process negative regulation of leukocyte activation lymphocyte activation negative regulation of lymphocyte activation leukocyte proliferation leukocyte cell-cell adhesion leukocyte activation negative regulation of mononuclear cell proliferation cell adhesion cell-cell adhesion negative regulation of cellular process regulation of multicellular organismal process regulation of cell-cell adhesion T cell proliferation regulation of lymphocyte proliferation negative regulation of cell population proliferation regulation of cell adhesion cell activation regulation of T cell activation negative regulation of cell activation regulation of T cell proliferation negative regulation of immune system process regulation of mononuclear cell proliferation cellular process regulation of lymphocyte activation 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 cellular component assembly protein-containing complex assembly MHC protein complex assembly cellular component organization or biogenesis positive regulation of leukocyte cell-cell adhesion positive regulation of cell-cell adhesion positive regulation of lymphocyte activation positive regulation of cell activation positive regulation of leukocyte activation positive regulation of cellular process positive regulation of T cell activation positive regulation of cell adhesion positive regulation of multicellular organismal process regulation of leukocyte differentiation mononuclear cell differentiation regulation of cell differentiation lymphocyte differentiation positive regulation of T cell differentiation regulation of cell development positive regulation of developmental process multicellular organism development cell differentiation anatomical structure development T cell differentiation developmental process positive regulation of cell development leukocyte differentiation cellular developmental process regulation of developmental process cell development regulation of T cell differentiation positive regulation of hemopoiesis positive regulation of cell differentiation regulation of lymphocyte differentiation regulation of multicellular organismal development hemopoiesis regulation of hemopoiesis positive regulation of leukocyte differentiation positive regulation of lymphocyte differentiation	cell periphery cellular anatomical structure cell surface membrane plasma membrane external side of plasma membrane side of membrane MHC protein complex MHC class II 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 protein complex MHC class II 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 lytic vacuole vacuole lysosome vacuolar membrane lytic vacuole membrane lysosomal membrane
B	MHC CLASS II I-AK	-	response to stimulus immune response immune system process adaptive immune response 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	membrane-bounded organelle intracellular anatomical structure early endosome endosome intracellular vesicle intracellular membrane-bounded organelle endomembrane system intracellular organelle cellular anatomical structure cytoplasmic vesicle organelle cytoplasm vesicle Golgi apparatus membrane-bounded organelle intracellular anatomical structure early endosome endosome intracellular vesicle intracellular membrane-bounded organelle endomembrane system intracellular organelle cellular anatomical structure cytoplasmic vesicle organelle cytoplasm vesicle Golgi apparatus cell surface MHC protein complex cell periphery MHC class II protein complex protein-containing complex plasma membrane protein complex membrane plasma membrane membrane protein complex late endosome multivesicular body
C [auth P]	MHC CLASS II I-AK	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
A	IPR050160	Major Histocompatibility Complex/Immunoglobulin	Family
A	IPR003597	Immunoglobulin C1-set	Domain
A	IPR011162	MHC classes I/II-like antigen recognition protein	Homologous Superfamily
A	IPR003006	Immunoglobulin/major histocompatibility complex, conserved site	Conserved Site
A	IPR014745	MHC class II, alpha/beta chain, N-terminal	Homologous Superfamily
A	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A	IPR007110	Immunoglobulin-like domain	Domain
A	IPR001003	MHC class II, alpha chain, N-terminal	Domain
B	IPR000353	MHC class II, beta chain, N-terminal	Domain
B	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
B	IPR050160	Major Histocompatibility Complex/Immunoglobulin	Family
B	IPR014745	MHC class II, alpha/beta chain, N-terminal	Homologous Superfamily
B	IPR003597	Immunoglobulin C1-set	Domain
B	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
B	IPR011162	MHC classes I/II-like antigen recognition protein	Homologous Superfamily
B	IPR007110	Immunoglobulin-like domain	Domain
B	IPR003006	Immunoglobulin/major histocompatibility complex, conserved site	Conserved Site
C [auth P]	IPR001916	Glycoside hydrolase, family 22	Family
C [auth P]	IPR023346	Lysozyme-like domain superfamily	Homologous Superfamily