Annotations: 8TQ9

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	MHC antigen-recognition domain	8055650	3000521	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Immunoglobulin (Ig) domain-like	8054617	3000071	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Immunoglobulin (Ig) domain-like	8054571	3000071	SCOP2B (2022-06-29)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
C [auth H]	Heavy Chain	IGHV1	-	beta-2-microglobulin \| h-2 class i histocompatibility antigen, d-d alpha chain	SAbDab (2025-11-21)
D [auth L]	Light Chain	IGKV17	Kappa	beta-2-microglobulin \| h-2 class i histocompatibility antigen, d-d alpha chain	SAbDab (2025-11-21)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Source
A	PF00129	Class I Histocompatibility antigen, domains alpha 1 and 2 (MHC_I)	Class I Histocompatibility antigen, domains alpha 1 and 2	Domain
A	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
A	H-2 class I histocompatibility antigen, D-D alpha chain	-	antigen processing and presentation immune system process antigen processing and presentation of endogenous peptide antigen via MHC class I via ER pathway antigen processing and presentation of endogenous peptide antigen antigen processing and presentation of peptide antigen via MHC class I antigen processing and presentation of endogenous peptide antigen via MHC class I via ER pathway, TAP-dependent antigen processing and presentation of peptide antigen antigen processing and presentation of endogenous antigen antigen processing and presentation of endogenous peptide antigen via MHC class I adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains T cell mediated cytotoxicity lymphocyte mediated immunity T cell mediated immunity response to stimulus antigen processing and presentation immune system process antigen processing and presentation of endogenous peptide antigen via MHC class I via ER pathway antigen processing and presentation of endogenous peptide antigen antigen processing and presentation of peptide antigen via MHC class I antigen processing and presentation of endogenous peptide antigen via MHC class I via ER pathway, TAP-dependent antigen processing and presentation of peptide antigen antigen processing and presentation of endogenous antigen antigen processing and presentation of endogenous peptide antigen via MHC class I adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains T cell mediated cytotoxicity lymphocyte mediated immunity T cell mediated immunity response to stimulus immune response leukocyte mediated cytotoxicity adaptive immune response immune effector process leukocyte mediated immunity cellular process cell killing regulation of immune effector process positive regulation of leukocyte mediated immunity regulation of cellular process 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 positive regulation of response to stimulus regulation of adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains positive regulation of immune response positive regulation of leukocyte mediated cytotoxicity regulation of immune system process positive regulation of immune effector process positive regulation of adaptive immune response positive regulation of immune system process positive regulation of cellular process regulation of T cell mediated immunity regulation of biological process positive regulation of T cell mediated cytotoxicity regulation of adaptive immune response biological regulation regulation of leukocyte mediated cytotoxicity regulation of leukocyte mediated immunity regulation of T cell mediated cytotoxicity regulation of lymphocyte mediated immunity regulation of response to stimulus positive regulation of T cell mediated immunity regulation of immune response regulation of cell killing positive regulation of cell killing regulation of neuron projection development multicellular organismal process regulation of cellular component organization cellular developmental process cell projection organization negative regulation of biological process cell development neuron projection development cellular component organization neurogenesis multicellular organism development neuron differentiation cell differentiation anatomical structure development negative regulation of cellular process cellular component organization or biogenesis negative regulation of cell projection organization system development developmental process plasma membrane bounded cell projection organization negative regulation of cellular component organization regulation of cell projection organization nervous system development negative regulation of neuron projection development generation of neurons neuron development regulation of plasma membrane bounded cell projection organization	membrane-bounded organelle intracellular anatomical structure organelle subcompartment membrane lumenal side of endoplasmic reticulum membrane intracellular membrane-bounded organelle endomembrane system side of membrane lumenal side of membrane endoplasmic reticulum subcompartment intracellular organelle cellular anatomical structure organelle nuclear outer membrane-endoplasmic reticulum membrane network membrane-bounded organelle intracellular anatomical structure organelle subcompartment membrane lumenal side of endoplasmic reticulum membrane intracellular membrane-bounded organelle endomembrane system side of membrane lumenal side of membrane endoplasmic reticulum subcompartment intracellular organelle cellular anatomical structure organelle nuclear outer membrane-endoplasmic reticulum membrane network endoplasmic reticulum cytoplasm organelle membrane endoplasmic reticulum membrane intracellular vesicle phagocytic vesicle phagocytic vesicle membrane cytoplasmic vesicle membrane bounding membrane of organelle cytoplasmic vesicle vesicle membrane endocytic vesicle membrane vesicle endocytic vesicle cell periphery cell surface plasma membrane external side of plasma membrane MHC class I protein complex MHC protein complex protein-containing complex plasma membrane protein complex membrane protein complex
C [auth H]	Fab.S19.8 Heavy Chain	-	-	-
D [auth L]	Fab.S19.8 Light Chain	-	-	-
E [auth P]	Transmembrane protein gp41	protein binding binding molecular function activator activity signaling receptor binding molecular function regulator activity signaling receptor regulator activity receptor ligand activity signaling receptor activator activity structural molecule activity	viral process fusion of virus membrane with host endosome membrane membrane fusion involved in viral entry into host cell membrane organization cellular component organization membrane fusion fusion of virus membrane with host plasma membrane cellular process cellular component organization or biogenesis regulation of establishment of T cell polarity regulation of establishment or maintenance of cell polarity multicellular organismal process establishment of lymphocyte polarity regulation of cellular process viral process fusion of virus membrane with host endosome membrane membrane fusion involved in viral entry into host cell membrane organization cellular component organization membrane fusion fusion of virus membrane with host plasma membrane cellular process cellular component organization or biogenesis regulation of establishment of T cell polarity regulation of establishment or maintenance of cell polarity multicellular organismal process establishment of lymphocyte polarity regulation of cellular process regulation of leukocyte activation establishment of T cell polarity positive regulation of biological process regulation of cell activation positive regulation of leukocyte cell-cell adhesion establishment or maintenance of cell polarity 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 establishment of T cell polarity positive regulation of leukocyte activation regulation of multicellular organismal process regulation of immune system process regulation of cell-cell adhesion positive regulation of immune system process positive regulation of cellular process regulation of biological process positive regulation of T cell activation positive regulation of cell adhesion regulation of cell adhesion cell activation biological regulation regulation of T cell activation establishment of cell polarity regulation of establishment of cell polarity immune system process regulation of leukocyte cell-cell adhesion positive regulation of multicellular organismal process regulation of lymphocyte activation regulation of localization cellular localization regulation of protein localization positive regulation of receptor clustering positive regulation of protein localization to membrane localization within membrane protein localization to membrane localization regulation of cellular localization macromolecule localization receptor clustering positive regulation of protein localization intracellular protein localization regulation of receptor clustering regulation of protein localization to membrane virion attachment to host cell biological process involved in interspecies interaction between organisms adhesion of symbiont to host cell viral life cycle adhesion of symbiont to host biological process involved in interaction with host biological process involved in symbiotic interaction symbiont-mediated perturbation of host defense response response to stimulus response to other organism symbiont-mediated perturbation of host immune response symbiont-mediated response to host defenses response to external stimulus response to biotic stimulus symbiont-mediated perturbation of host process response to host immune response symbiont-mediated evasion of host immune response response to host response to external biotic stimulus modulation of process of another organism symbiont entry into host cell symbiont entry into host plasma membrane raft distribution regulation of cellular component organization positive regulation of cellular component organization plasma membrane raft polarization plasma membrane organization membrane raft organization endomembrane system organization membrane raft distribution plasma membrane raft localization membrane raft polarization regulation of plasma membrane raft polarization membrane raft localization regulation of plasma membrane organization positive regulation of plasma membrane raft polarization import into cell receptor-mediated endocytosis of virus by host cell transport establishment of localization vesicle-mediated transport clathrin-dependent endocytosis clathrin-dependent endocytosis of virus by host cell receptor-mediated endocytosis endocytosis endocytosis involved in viral entry into host cell organelle organization actin cytoskeleton organization actin filament organization actin filament-based process supramolecular fiber organization cytoskeleton organization viral gene expression viral protein processing	cellular anatomical structure membrane virion component virion membrane host intracellular membrane-bounded organelle host cellular component host intracellular part host cell membrane other organism part host cell cytoplasm part host intracellular organelle host cell endosome membrane host cell cytoplasm host cell part cellular anatomical structure membrane virion component virion membrane host intracellular membrane-bounded organelle host cellular component host intracellular part host cell membrane other organism part host cell cytoplasm part host intracellular organelle host cell endosome membrane host cell cytoplasm host cell part host cell endosome host intracellular region viral membrane viral envelope host cell plasma membrane
B	Beta-2-microglobulin	identical protein binding protein binding binding protein homodimerization activity protein dimerization activity structural molecule activity	intracellular iron ion homeostasis inorganic ion homeostasis cellular homeostasis chemical homeostasis homeostatic process intracellular monoatomic cation homeostasis monoatomic ion homeostasis intracellular chemical homeostasis monoatomic cation homeostasis intracellular monoatomic ion homeostasis protein refolding primary metabolic process gene expression macromolecule biosynthetic process intracellular iron ion homeostasis inorganic ion homeostasis cellular homeostasis chemical homeostasis homeostatic process intracellular monoatomic cation homeostasis monoatomic ion homeostasis intracellular chemical homeostasis monoatomic cation homeostasis intracellular monoatomic ion homeostasis protein refolding primary metabolic process gene expression macromolecule biosynthetic process protein maturation protein folding biosynthetic process metabolic process cellular process protein metabolic process macromolecule metabolic process localization transport iron ion transport transition metal ion transport monoatomic ion transport monoatomic cation transport establishment of localization metal ion transport adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains multicellular organismal process regulation of immune effector process lymphocyte mediated immunity T cell mediated immunity positive regulation of leukocyte mediated immunity regulation of cellular process response to stimulus T cell cytokine production positive regulation of macromolecule biosynthetic process positive regulation of metabolic process positive regulation of immune response cytokine production leukocyte mediated immunity regulation of immune system process positive regulation of macromolecule metabolic process positive regulation of adaptive immune response positive regulation of T cell cytokine production positive regulation of immune system process regulation of T cell mediated immunity regulation of biological process regulation of cytokine production involved in immune response immune response regulation of adaptive immune response immune effector process regulation of gene expression regulation of leukocyte mediated immunity regulation of response to stimulus positive regulation of production of molecular mediator of immune response positive regulation of multicellular organismal process regulation of immune response regulation of macromolecule biosynthetic process regulation of production of molecular mediator of immune response positive regulation of cytokine production regulation of metabolic process 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 positive regulation of response to stimulus regulation of T cell cytokine production regulation of adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains positive regulation of biosynthetic process regulation of cytokine production positive regulation of immune effector process regulation of multicellular organismal process cytokine production involved in immune response positive regulation of cellular process production of molecular mediator of immune response regulation of biosynthetic process biological regulation regulation of macromolecule metabolic process adaptive immune response regulation of lymphocyte mediated immunity positive regulation of gene expression immune system process positive regulation of T cell mediated immunity positive regulation of cytokine production involved in immune response system process sensory perception of chemical stimulus sensory perception nervous system process sensory perception of smell cellular component organization cellular component organization or biogenesis supramolecular fiber organization amyloid fibril formation cellular response to stimulus cellular response to iron(III) ion cellular response to metal ion response to iron(III) ion cellular response to iron ion cellular response to chemical stimulus response to metal ion response to iron ion response to chemical protein-containing complex organization protein homotetramerization cellular component biogenesis cellular component assembly protein complex oligomerization protein tetramerization protein-containing complex assembly protein homooligomerization multicellular organismal-level iron ion homeostasis multicellular organismal-level homeostasis multicellular organismal-level chemical homeostasis T cell mediated cytotoxicity leukocyte mediated cytotoxicity cell killing regulation of neuron projection development regulation of cellular component organization cellular developmental process cell projection organization negative regulation of biological process cell development neuron projection development neurogenesis multicellular organism development neuron differentiation cell differentiation anatomical structure development negative regulation of cellular process negative regulation of cell projection organization system development developmental process plasma membrane bounded cell projection organization negative regulation of cellular component organization regulation of cell projection organization nervous system development negative regulation of neuron projection development generation of neurons neuron development regulation of plasma membrane bounded cell projection organization regulation of developmental process regulation of cell differentiation regulation of cell development myeloid cell homeostasis erythrocyte homeostasis regulation of multicellular organismal development hemopoiesis regulation of myeloid cell differentiation erythrocyte differentiation regulation of erythrocyte differentiation myeloid cell differentiation regulation of hemopoiesis homeostasis of number of cells antigen processing and presentation antigen processing and presentation of peptide antigen via MHC class Ib antigen processing and presentation of exogenous protein antigen via MHC class Ib, TAP-dependent antigen processing and presentation via MHC class Ib antigen processing and presentation of exogenous peptide antigen via MHC class Ib antigen processing and presentation of exogenous peptide antigen antigen processing and presentation of peptide antigen antigen processing and presentation of exogenous antigen cell activation mononuclear cell differentiation lymphocyte activation lymphocyte differentiation leukocyte activation T cell differentiation in thymus T cell activation T cell differentiation leukocyte differentiation cellular response to nicotine response to nicotine regulation of localization import into cell positive regulation of cellular component organization vesicle-mediated transport positive regulation of endocytosis positive regulation of receptor-mediated endocytosis regulation of endocytosis regulation of transport regulation of receptor-mediated endocytosis regulation of vesicle-mediated transport positive regulation of transport endocytosis receptor-mediated endocytosis regulation of cellular senescence cellular senescence positive regulation of cellular senescence cellular response to stress response to stress antigen processing and presentation of endogenous peptide antigen antigen processing and presentation of peptide antigen via MHC class I antigen processing and presentation of endogenous antigen antigen processing and presentation of endogenous peptide antigen via MHC class I behavior learning or memory cognition peptide antigen assembly with MHC class I protein complex peptide antigen assembly with MHC protein complex MHC class I protein complex assembly MHC protein complex assembly defense response cellular defense response regulation of neurogenesis regulation of nervous system development negative regulation of neurogenesis negative regulation of nervous system development negative regulation of cell differentiation negative regulation of developmental process negative regulation of cell development negative regulation of multicellular organismal process negative regulation of cell population proliferation cell population proliferation regulation of cell population proliferation regulation of epithelial cell proliferation epithelial cell proliferation negative regulation of epithelial cell proliferation positive regulation of leukocyte mediated cytotoxicity positive regulation of T cell mediated cytotoxicity regulation of leukocyte mediated cytotoxicity regulation of T cell mediated cytotoxicity regulation of cell killing positive regulation of cell killing negative regulation of forebrain neuron differentiation forebrain development regulation of forebrain neuron differentiation central nervous system neuron differentiation head development forebrain generation of neurons animal organ development brain development central nervous system development forebrain neuron differentiation negative regulation of neuron differentiation regulation of neuron differentiation regulation of monoatomic ion transport regulation of iron ion transport regulation of metal ion transport biological process involved in interspecies interaction between organisms response to other organism response to bacterium response to external stimulus response to external biotic stimulus response to molecule of bacterial origin response to biotic stimulus	cell periphery cellular anatomical structure cell surface membrane plasma membrane external side of plasma membrane side of membrane protein-containing complex plasma membrane protein complex plasma membrane signaling receptor complex membrane protein complex HFE-transferrin receptor complex receptor complex intracellular anatomical structure cell periphery cellular anatomical structure cell surface membrane plasma membrane external side of plasma membrane side of membrane protein-containing complex plasma membrane protein complex plasma membrane signaling receptor complex membrane protein complex HFE-transferrin receptor complex receptor complex intracellular anatomical structure cytoplasm cytosol MHC class I protein complex MHC protein complex membrane-bounded organelle intracellular vesicle phagocytic vesicle intracellular membrane-bounded organelle intracellular organelle phagocytic vesicle membrane cytoplasmic vesicle membrane bounding membrane of organelle cytoplasmic vesicle vesicle membrane organelle endocytic vesicle membrane vesicle organelle membrane endocytic vesicle Golgi apparatus endomembrane system MHC class I peptide loading complex organelle subcompartment endoplasmic reticulum subcompartment nuclear outer membrane-endoplasmic reticulum membrane network endoplasmic reticulum endoplasmic reticulum protein-containing complex endoplasmic reticulum membrane extracellular region extracellular space

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
A	IPR050208	Antigen-presenting and immune regulatory MHC class I-related	Family
A	IPR037055	MHC class I-like antigen recognition-like superfamily	Homologous Superfamily
A	IPR003597	Immunoglobulin C1-set	Domain
A	IPR010579	MHC class I, alpha chain, C-terminal	Domain
A	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A	IPR011161	MHC class I-like antigen recognition-like	Domain
A	IPR011162	MHC classes I/II-like antigen recognition protein	Homologous Superfamily
A	IPR007110	Immunoglobulin-like domain	Domain
A	IPR001039	MHC class I alpha chain, alpha1 alpha2 domains	Domain
A	IPR003006	Immunoglobulin/major histocompatibility complex, conserved site	Conserved Site
E [auth P]	IPR000777	Human immunodeficiency virus 1, envelope glycoprotein Gp120	Domain
E [auth P]	IPR036377	Gp120 core superfamily	Homologous Superfamily
E [auth P]	IPR000328	Retroviral envelope protein GP41-like	Domain
E [auth P]	IPR037527	Envelope glycoprotein Gp160	Family
B	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
B	IPR050160	Major Histocompatibility Complex/Immunoglobulin	Family
B	IPR003597	Immunoglobulin C1-set	Domain
B	IPR015707	Beta-2-Microglobulin	Family
B	IPR003006	Immunoglobulin/major histocompatibility complex, conserved site	Conserved Site
B	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
B	IPR007110	Immunoglobulin-like domain	Domain