3S4S | pdb_00003s4s

Crystal structure of CD4 mutant bound to HLA-DR1

External Resource: Annotation

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
Pharos: Disease Associations

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
H	SCOP2B Superfamily	Immunoglobulin (Ig) domain-like	8054739	3000071	SCOP2B (2022-06-29)
H	SCOP2B Superfamily	Immunoglobulin (Ig) domain-like	8054493	3000071	SCOP2B (2022-06-29)
D [auth G]	SCOP2B Superfamily	Immunoglobulin (Ig) domain-like	8054493	3000071	SCOP2B (2022-06-29)
D [auth G]	SCOP2B Superfamily	Immunoglobulin (Ig) domain-like	8054739	3000071	SCOP2B (2022-06-29)
F [auth E]	SCOP2B Superfamily	Immunoglobulin (Ig) domain-like	8054705	3000071	SCOP2B (2022-06-29)
F [auth E]	SCOP2B Superfamily	MHC antigen-recognition domain	8034737	3000521	SCOP2B (2022-06-29)
F [auth E]	SCOP2B Superfamily	MHC antigen-recognition domain	8055636	3000521	SCOP2B (2022-06-29)
F [auth E]	SCOP2B Superfamily	Immunoglobulin (Ig) domain-like	8054703	3000071	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Immunoglobulin (Ig) domain-like	8054703	3000071	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Immunoglobulin (Ig) domain-like	8054705	3000071	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	MHC antigen-recognition domain	8055636	3000521	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	MHC antigen-recognition domain	8034737	3000521	SCOP2B (2022-06-29)
E [auth D]	SCOP2B Superfamily	MHC antigen-recognition domain	8040455	3000521	SCOP2B (2022-06-29)
E [auth D]	SCOP2B Superfamily	Immunoglobulin (Ig) domain-like	8054671	3000071	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	Immunoglobulin (Ig) domain-like	8054671	3000071	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	MHC antigen-recognition domain	8040455	3000521	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)
H	Ion_trans_2	e3s4sH1	A: a/b three-layered sandwiches	X: Lipocalins/Streptavidin	H: Zn-dependent exopeptidases	T: Zn-dependent exopeptidases	F: Ion_trans_2	ECOD (v294.1)
D [auth G]	Oxidored_FMN	e3s4sG1	A: a/b three-layered sandwiches	X: Hormone receptor domain (HRM, Pfam 02793)	H: Hormone receptor domain (HRM, Pfam 02793)	T: Hormone receptor domain (HRM, Pfam 02793)	F: Oxidored_FMN	ECOD (v294.1)
F [auth E]	Ion_trans_2	e3s4sE1	A: a/b three-layered sandwiches	X: Lipocalins/Streptavidin	H: Zn-dependent exopeptidases	T: Zn-dependent exopeptidases	F: Ion_trans_2	ECOD (v294.1)
F [auth E]	MoCoBD_2	e3s4sE2	A: a/b three-layered sandwiches	X: P-loop domains-like	H: Hemagglutinin HA2 chain	T: Hemagglutinin HA2 chain	F: MoCoBD_2	ECOD (v294.1)
B	Sod_Fe_C	e3s4sB1	A: a/b three-layered sandwiches	X: Cystatin-like	H: sensor domains	T: sensor domains	F: Sod_Fe_C	ECOD (v294.1)
B	MoCoBD_2	e3s4sB2	A: a/b three-layered sandwiches	X: P-loop domains-like	H: Hemagglutinin HA2 chain	T: Hemagglutinin HA2 chain	F: MoCoBD_2	ECOD (v294.1)
E [auth D]	Ion_trans_2	e3s4sD1	A: a/b three-layered sandwiches	X: Lipocalins/Streptavidin	H: Zn-dependent exopeptidases	T: Zn-dependent exopeptidases	F: Ion_trans_2	ECOD (v294.1)
A	Ion_trans_2	e3s4sA1	A: a/b three-layered sandwiches	X: Lipocalins/Streptavidin	H: Zn-dependent exopeptidases	T: Zn-dependent exopeptidases	F: Ion_trans_2	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
H	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
D [auth G]	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
F [auth E]	3.10.320.10	Alpha Beta	Roll	Class II Histocompatibility Antigen, M Beta Chain	Chain B, domain 1	CATH (4.3.0)
F [auth E]	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)
E [auth D]	3.10.320.10	Alpha Beta	Roll	Class II Histocompatibility Antigen, M Beta Chain	Chain B, domain 1	CATH (4.3.0)
E [auth D]	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)

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
D [auth G], H	CD4	1V-1C-LIKE	Homo sapiens (human)	CD4	V-LIKE-DOMAIN V-LIKE, C-LIKE-DOMAIN C-LIKE	RPI	1V-1C-LIKE	IMGT (202611-0)
B, F [auth E]	MH2 HLA-DRA0101_HLA-DRB10101	II-BETA	Homo sapiens (human)	HLA-DRB1*0101	G-DOMAIN G-BETA, C-LIKE-DOMAIN C-LIKE	MH	MH2-ALPHA_BETA	IMGT (202611-0)
A, E [auth D]	MH2 HLA-DRA0101_HLA-DRB10101	II-ALPHA	Homo sapiens (human)	HLA-DRA*0101	G-DOMAIN G-ALPHA, C-LIKE-DOMAIN C-LIKE	MH	MH2-ALPHA_BETA	IMGT (202611-0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
D [auth G], H	PF05790	Immunoglobulin C2-set domain (C2-set)	Immunoglobulin C2-set domain		Domain
D [auth G], H	PF00047	Immunoglobulin domain (ig)	Immunoglobulin domain	Members of the immunoglobulin superfamily are found in hundreds of proteins of different functions. Examples include antibodies, the giant muscle kinase titin and receptor tyrosine kinases. Immunoglobulin-like domains may be involved in protein-prote ...	Members of the immunoglobulin superfamily are found in hundreds of proteins of different functions. Examples include antibodies, the giant muscle kinase titin and receptor tyrosine kinases. Immunoglobulin-like domains may be involved in protein-protein and protein-ligand interactions.	Domain
B, F [auth E]	PF00969	Class II histocompatibility antigen, beta domain (MHC_II_beta)	Class II histocompatibility antigen, beta domain		Domain
B, F [auth E]	PF07654	Immunoglobulin C1-set domain (C1-set)	Immunoglobulin C1-set domain		Domain
A, E [auth D]	PF07654	Immunoglobulin C1-set domain (C1-set)	Immunoglobulin C1-set domain		Domain
A, E [auth D]	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
D [auth G], H	T-cell surface glycoprotein CD4	molecular transducer activity coreceptor activity signaling receptor activity protein-containing complex binding binding MHC protein complex binding MHC class II protein complex binding immunoglobulin binding interleukin-16 binding protein binding cytokine binding protein tyrosine kinase binding kinase binding enzyme binding molecular transducer activity coreceptor activity signaling receptor activity protein-containing complex binding binding MHC protein complex binding MHC class II protein complex binding immunoglobulin binding interleukin-16 binding protein binding cytokine binding protein tyrosine kinase binding kinase binding enzyme binding protein kinase binding identical protein binding transmembrane signaling receptor activity virus receptor activity exogenous protein binding signaling receptor binding MHC class II protein binding MHC protein binding interleukin-16 receptor activity cytokine receptor activity immune receptor activity structural molecule activity extracellular matrix structural constituent protein homodimerization activity protein dimerization activity lipid binding cation binding transition metal ion binding zinc ion binding ion binding metal ion binding small molecule binding	cellular response to stimulus positive regulation of cell communication regulation of cellular process positive regulation of signal transduction response to stimulus signaling positive regulation of biological process regulation of signal transduction intracellular signal transduction cell communication positive regulation of response to stimulus regulation of intracellular signal transduction intracellular signaling cassette regulation of calcium-mediated signaling cellular response to stimulus positive regulation of cell communication regulation of cellular process positive regulation of signal transduction response to stimulus signaling positive regulation of biological process regulation of signal transduction intracellular signal transduction cell communication positive regulation of response to stimulus regulation of intracellular signal transduction intracellular signaling cassette regulation of calcium-mediated signaling positive regulation of calcium-mediated signaling signal transduction positive regulation of cellular process regulation of biological process regulation of signaling biological regulation positive regulation of intracellular signal transduction regulation of response to stimulus calcium-mediated signaling regulation of cell communication cellular process positive regulation of signaling maintenance of protein location localization cellular localization maintenance of protein location in cell macromolecule localization intracellular protein localization maintenance of location maintenance of location in cell immune response immune system process adaptive immune response biological process involved in interspecies interaction between organisms symbiont entry into host cell viral process symbiont entry into host viral life cycle biological process involved in interaction with host biological process involved in symbiotic interaction developmental process multicellular organismal process cellular developmental process hemopoiesis cell activation cell development mononuclear cell differentiation lymphocyte activation lymphocyte differentiation leukocyte activation T cell activation cell differentiation anatomical structure development T cell differentiation leukocyte differentiation interleukin-15-mediated signaling pathway cell surface receptor signaling pathway response to cytokine cellular response to interleukin-15 cytokine-mediated signaling pathway response to peptide response to chemical cellular response to cytokine stimulus response to interleukin-15 regulation of leukocyte activation regulation of cell activation regulation of T cell activation regulation of immune system process regulation of multicellular organismal process regulation of lymphocyte activation myeloid leukocyte differentiation regulation of leukocyte differentiation positive regulation of monocyte differentiation regulation of developmental process regulation of cell differentiation regulation of cell development positive regulation of developmental process multicellular organism development positive regulation of cell differentiation positive regulation of hemopoiesis monocyte differentiation positive regulation of immune system process regulation of multicellular organismal development regulation of monocyte differentiation regulation of myeloid cell differentiation positive regulation of cell development regulation of myeloid leukocyte differentiation positive regulation of myeloid leukocyte differentiation myeloid cell differentiation positive regulation of myeloid cell differentiation regulation of hemopoiesis positive regulation of multicellular organismal process positive regulation of leukocyte differentiation response to amine response to methamphetamine hydrochloride response to nitrogen compound cell adhesion regulation of localization regulation of calcium ion transport positive regulation of cation transmembrane transport positive regulation of calcium ion transport regulation of calcium ion transport into cytosol transport monoatomic ion transmembrane transport regulation of monoatomic ion transmembrane transport calcium ion transport metal ion transport monoatomic cation transmembrane transport regulation of calcium ion transmembrane transport positive regulation of monoatomic ion transport positive regulation of calcium ion transmembrane transport positive regulation of transmembrane transport monoatomic ion transport positive regulation of monoatomic ion transmembrane transport regulation of biological quality monoatomic cation transport regulation of metal ion transport calcium ion transmembrane import into cytosol regulation of transport regulation of monoatomic ion transport positive regulation of cytosolic calcium ion concentration establishment of localization transmembrane transport positive regulation of calcium ion transport into cytosol regulation of transmembrane transport positive regulation of transport regulation of cellular localization regulation of monoatomic cation transmembrane transport calcium ion transmembrane transport calcium ion transport into cytosol response to other organism defense response response to external stimulus defense response to Gram-negative bacterium response to biotic stimulus defense response to bacterium response to bacterium response to stress response to external biotic stimulus response to lipid cellular response to ionomycin response to fatty acid response to oxygen-containing compound cellular response to ether cellular response to oxygen-containing compound cellular response to fatty acid cellular response to chemical stimulus response to ether cellular response to lipid response to ionomycin positive regulation of cell population proliferation positive regulation of cell activation lymphocyte proliferation positive regulation of leukocyte activation regulation of leukocyte proliferation cell population proliferation positive regulation of T cell activation positive regulation of lymphocyte proliferation positive regulation of T cell proliferation regulation of cell population proliferation mononuclear cell proliferation regulation of leukocyte cell-cell adhesion positive regulation of leukocyte proliferation positive regulation of leukocyte cell-cell adhesion leukocyte proliferation leukocyte cell-cell adhesion positive regulation of cell-cell adhesion positive regulation of lymphocyte activation cell-cell adhesion positive regulation of mononuclear cell proliferation regulation of cell-cell adhesion T cell proliferation regulation of lymphocyte proliferation positive regulation of cell adhesion regulation of cell adhesion regulation of T cell proliferation regulation of mononuclear cell proliferation adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains helper T cell enhancement of adaptive immune response positive regulation of adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains regulation of adaptive immune response regulation of adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains positive regulation of immune response regulation of immune response positive regulation of adaptive immune response immune response-regulating cell surface receptor signaling pathway immune response-activating signaling pathway immune response-regulating signaling pathway immune response-activating cell surface receptor signaling pathway T cell receptor signaling pathway antigen receptor-mediated signaling pathway activation of immune response T cell selection response to alcohol response to ethanol response to granulocyte macrophage colony-stimulating factor cellular response to granulocyte macrophage colony-stimulating factor stimulus macrophage differentiation positive regulation of macromolecule biosynthetic process positive regulation of metabolic process positive regulation of biosynthetic process regulation of cytokine production cytokine production positive regulation of macromolecule metabolic process regulation of biosynthetic process regulation of interleukin-2 production interleukin-2 production regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process positive regulation of interleukin-2 production regulation of gene expression biosynthetic process positive regulation of gene expression regulation of macromolecule biosynthetic process metabolic process macromolecule metabolic process positive regulation of cytokine production regulation of metabolic process response to nutrient levels response to vitamin D response to nutrient response to vitamin cell surface receptor protein tyrosine kinase signaling pathway enzyme-linked receptor protein signaling pathway response to estradiol	cell periphery cellular anatomical structure cell surface membrane plasma membrane external side of plasma membrane side of membrane membrane-bounded organelle intracellular anatomical structure intracellular vesicle intracellular organelle bounding membrane of organelle cytoplasmic vesicle vesicle membrane cell periphery cellular anatomical structure cell surface membrane plasma membrane external side of plasma membrane side of membrane membrane-bounded organelle intracellular anatomical structure intracellular vesicle intracellular organelle bounding membrane of organelle cytoplasmic vesicle vesicle membrane clathrin-coated vesicle endocytic vesicle membrane coated vesicle vesicle endocytic vesicle clathrin-coated vesicle membrane clathrin-coated endocytic vesicle membrane intracellular membrane-bounded organelle clathrin-coated endocytic vesicle cytoplasmic vesicle membrane coated vesicle membrane organelle cytoplasm organelle membrane membrane-enclosed lumen endomembrane system intracellular organelle lumen endoplasmic reticulum lumen organelle lumen endoplasmic reticulum protein-containing complex plasma membrane protein complex plasma membrane signaling receptor complex membrane protein complex T cell receptor complex receptor complex membrane microdomain membrane raft organelle subcompartment endoplasmic reticulum subcompartment nuclear outer membrane-endoplasmic reticulum membrane network endoplasmic reticulum membrane early endosome endosome
C, G [auth F]	Hemagglutinin peptide	host cell surface binding binding host cell surface receptor binding	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 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 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 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 non-lytic viral release viral budding virion assembly exit from host cell viral budding from plasma membrane viral release from host cell import into cell receptor-mediated endocytosis of virus by host cell transport establishment of localization vesicle-mediated transport localization symbiont entry into host cell clathrin-dependent endocytosis symbiont entry into host clathrin-dependent endocytosis of virus by host cell receptor-mediated endocytosis endocytosis endocytosis involved in viral entry into host cell	cellular anatomical structure membrane virion component virion membrane viral membrane viral envelope host cell plasma membrane host cellular component host cell part host cell membrane other organism part
B, F [auth E]	HLA class II histocompatibility antigen, DRB1-1 beta chain	binding antigen binding peptide antigen binding peptide binding protein-containing complex binding MHC protein complex binding MHC class II protein complex binding polysaccharide binding carbohydrate binding protein binding signaling receptor binding T cell receptor binding CD4 receptor binding structural constituent of cytoskeleton binding antigen binding peptide antigen binding peptide binding protein-containing complex binding MHC protein complex binding MHC class II protein complex binding polysaccharide binding carbohydrate binding protein binding signaling receptor binding T cell receptor binding CD4 receptor binding structural constituent of cytoskeleton structural molecule activity	antigen processing and presentation antigen processing and presentation of endogenous peptide antigen via MHC class II antigen processing and presentation of peptide or polysaccharide antigen via MHC class II immune system process antigen processing and presentation of endogenous peptide antigen antigen processing and presentation of peptide antigen via MHC class II antigen processing and presentation of peptide antigen antigen processing and presentation of endogenous antigen cellular component organization cellular component biogenesis cellular component assembly protein-containing complex organization protein complex oligomerization protein tetramerization antigen processing and presentation antigen processing and presentation of endogenous peptide antigen via MHC class II antigen processing and presentation of peptide or polysaccharide antigen via MHC class II immune system process antigen processing and presentation of endogenous peptide antigen antigen processing and presentation of peptide antigen via MHC class II antigen processing and presentation of peptide antigen antigen processing and presentation of endogenous antigen cellular component organization cellular component biogenesis cellular component assembly protein-containing complex organization protein complex oligomerization protein tetramerization protein-containing complex assembly cellular process cellular component organization or biogenesis biological process involved in interspecies interaction between organisms response to stimulus detection of external biotic stimulus response to other organism response to external stimulus detection of biotic stimulus detection of bacterium response to biotic stimulus detection of stimulus response to bacterium detection of other organism response to external biotic stimulus 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 immune system process regulation of leukocyte proliferation regulation of biological process 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 biological regulation 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 regulation of lymphocyte activation defense response immune response response to stress inflammatory response inflammatory response to antigenic stimulus myeloid leukocyte differentiation regulation of leukocyte differentiation positive regulation of monocyte differentiation cellular developmental process regulation of developmental process positive regulation of biological process cell development regulation of cell differentiation mononuclear cell differentiation regulation of cell development positive regulation of developmental process multicellular organism development positive regulation of cell differentiation positive regulation of hemopoiesis cell differentiation anatomical structure development monocyte differentiation positive regulation of immune system process positive regulation of cellular process developmental process regulation of multicellular organismal development regulation of monocyte differentiation hemopoiesis regulation of myeloid cell differentiation positive regulation of cell development regulation of myeloid leukocyte differentiation positive regulation of myeloid leukocyte differentiation myeloid cell differentiation positive regulation of myeloid cell differentiation regulation of hemopoiesis positive regulation of multicellular organismal process positive regulation of leukocyte differentiation leukocyte differentiation regulation of defense response regulation of response to external stimulus negative regulation of inflammatory response regulation of response to stress negative regulation of inflammatory response to antigenic stimulus negative regulation of response to stimulus negative regulation of immune response regulation of inflammatory response to antigenic stimulus regulation of inflammatory response regulation of response to stimulus negative regulation of response to external stimulus negative regulation of defense response regulation of immune response regulation of type II interferon production type II interferon production cytokine production regulation of cytokine production negative regulation of type II interferon production negative regulation of macromolecule metabolic process regulation of biosynthetic process negative regulation of metabolic process negative regulation of cytokine production regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process regulation of gene expression negative regulation of gene expression biosynthetic process negative regulation of biosynthetic process negative regulation of macromolecule biosynthetic process metabolic process regulation of macromolecule biosynthetic process macromolecule metabolic process regulation of metabolic process regulation of interleukin-4 production interleukin-4 production 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 adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains positive regulation of lymphocyte mediated immunity 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 leukocyte mediated immunity positive regulation of immune effector process positive regulation of adaptive immune response regulation of T cell mediated immunity T cell mediated cytotoxicity positive regulation of T cell mediated cytotoxicity regulation of adaptive immune response regulation of leukocyte mediated cytotoxicity leukocyte mediated cytotoxicity adaptive immune response immune effector process regulation of leukocyte mediated immunity regulation of T cell mediated cytotoxicity regulation of lymphocyte mediated immunity positive regulation of T cell mediated immunity regulation of cell killing positive regulation of cell killing cell killing regulation of alpha-beta T cell activation lymphocyte differentiation positive regulation of T cell differentiation positive regulation of cell activation positive regulation of leukocyte activation alpha-beta T cell activation T cell differentiation positive regulation of T cell activation positive regulation of CD4-positive, alpha-beta T cell differentiation positive regulation of regulatory T cell differentiation positive regulation of alpha-beta T cell activation regulation of CD4-positive, CD25-positive, alpha-beta regulatory T cell differentiation positive regulation of alpha-beta T cell differentiation positive regulation of leukocyte cell-cell adhesion regulation of CD4-positive, alpha-beta T cell differentiation regulation of alpha-beta T cell differentiation CD4-positive, alpha-beta T cell differentiation positive regulation of cell-cell adhesion regulation of T cell differentiation positive regulation of lymphocyte activation positive regulation of CD4-positive, alpha-beta T cell activation alpha-beta T cell differentiation CD4-positive, alpha-beta T cell activation regulation of lymphocyte differentiation positive regulation of CD4-positive, CD25-positive, alpha-beta regulatory T cell differentiation positive regulation of cell adhesion regulation of regulatory T cell differentiation CD4-positive, CD25-positive, alpha-beta regulatory T cell differentiation regulation of CD4-positive, alpha-beta T cell activation regulatory T cell differentiation positive regulation of lymphocyte differentiation cellular response to stimulus immune response-regulating cell surface receptor signaling pathway signaling cell communication immune response-activating signaling pathway immune response-regulating signaling pathway signal transduction cell surface receptor signaling pathway immune response-activating cell surface receptor signaling pathway T cell receptor signaling pathway antigen receptor-mediated signaling pathway activation of immune response humoral immune response epidermis development tissue development 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 interleukin-10 production regulation of interleukin-10 production peptide antigen assembly with MHC class II protein complex peptide antigen assembly with MHC protein complex MHC class II protein complex assembly MHC protein complex assembly positive regulation of cell communication regulation of localization establishment of protein localization nitrogen compound transport positive regulation of establishment of protein localization localization carbohydrate homeostasis establishment of localization in cell positive regulation of insulin secretion involved in cellular response to glucose stimulus positive regulation of insulin secretion intracellular protein localization regulation of biological quality regulation of peptide hormone secretion regulation of hormone levels positive regulation of peptide hormone secretion establishment of protein localization to extracellular region intracellular glucose homeostasis protein secretion establishment of localization cellular response to oxygen-containing compound regulation of protein secretion regulation of secretion cellular response to carbohydrate stimulus chemical homeostasis response to glucose response to chemical glucose homeostasis positive regulation of protein localization insulin secretion involved in cellular response to glucose stimulus cellular localization regulation of hormone secretion regulation of protein localization regulation of peptide secretion transport homeostatic process positive regulation of secretion by cell hormone secretion protein localization to extracellular region positive regulation of protein transport peptide secretion regulation of secretion by cell secretion by cell positive regulation of hormone secretion response to monosaccharide response to carbohydrate positive regulation of secretion signal release cellular response to hexose stimulus intracellular chemical homeostasis cellular response to monosaccharide stimulus positive regulation of peptide secretion regulation of signaling regulation of transport secretion regulation of peptide transport regulation of establishment of protein localization export from cell cell-cell signaling response to oxygen-containing compound cellular response to glucose stimulus regulation of protein transport positive regulation of protein secretion peptide transport response to hexose cellular response to chemical stimulus cellular homeostasis positive regulation of transport regulation of cellular localization protein transport regulation of insulin secretion peptide hormone secretion macromolecule localization regulation of insulin secretion involved in cellular response to glucose stimulus hormone transport regulation of cell communication insulin secretion positive regulation of signaling macrophage differentiation regulation of response to biotic stimulus positive regulation of response to biotic stimulus immune response to tumor cell regulation of response to tumor cell T cell mediated immune response to tumor cell regulation of T cell mediated immune response to tumor cell response to tumor cell positive regulation of immune response to tumor cell regulation of immune response to tumor cell positive regulation of T cell mediated immune response to tumor cell positive regulation of response to tumor cell T-helper 1 type immune response dendritic cell antigen processing and presentation myeloid dendritic cell antigen processing and presentation regulation of T-helper cell differentiation T-helper cell differentiation immunological memory formation process cell activation involved in immune response positive regulation of memory T cell differentiation memory T cell differentiation T cell activation involved in immune response leukocyte activation involved in immune response lymphocyte activation involved in immune response T cell differentiation involved in immune response regulation of memory T cell differentiation immunological memory process	cell periphery cellular anatomical structure cell surface membrane plasma membrane external side of plasma membrane side of membrane membrane-bounded organelle intracellular anatomical structure intracellular vesicle intracellular organelle bounding membrane of organelle cytoplasmic vesicle vesicle membrane cell periphery cellular anatomical structure cell surface membrane plasma membrane external side of plasma membrane side of membrane membrane-bounded organelle intracellular anatomical structure intracellular vesicle intracellular organelle bounding membrane of organelle cytoplasmic vesicle vesicle membrane clathrin-coated vesicle endocytic vesicle membrane coated vesicle vesicle endocytic vesicle clathrin-coated vesicle membrane clathrin-coated endocytic vesicle membrane intracellular membrane-bounded organelle clathrin-coated endocytic vesicle cytoplasmic vesicle membrane coated vesicle membrane organelle cytoplasm organelle membrane extracellular exosome extracellular vesicle extracellular organelle extracellular region extracellular space extracellular membrane-bounded organelle endosome membrane endosome late endosome membrane endomembrane system late endosome vacuolar membrane lytic vacuole vacuole lytic vacuole membrane lysosomal membrane lysosome Golgi membrane Golgi apparatus transport vesicle transport vesicle membrane polymeric cytoskeletal fiber intracellular membraneless organelle intermediate filament cytoskeleton cytoskeleton membraneless organelle intermediate filament supramolecular fiber supramolecular polymer supramolecular complex MHC protein complex MHC class II protein complex protein-containing complex plasma membrane protein complex membrane protein complex organelle subcompartment lumenal side of endoplasmic reticulum membrane lumenal side of membrane endoplasmic reticulum subcompartment nuclear outer membrane-endoplasmic reticulum membrane network endoplasmic reticulum endoplasmic reticulum membrane immunological synapse autolysosome autolysosome membrane secondary lysosome Golgi apparatus subcompartment trans-Golgi network membrane trans-Golgi network COPII-coated ER to Golgi transport vesicle ER to Golgi transport vesicle membrane
A, E [auth D]	HLA class II histocompatibility antigen, DR alpha chain	binding antigen binding peptide antigen binding peptide binding protein-containing complex binding MHC protein complex binding MHC class II protein complex binding polysaccharide binding carbohydrate binding protein binding signaling receptor binding T cell receptor binding	multicellular organismal process regulation of cellular process regulation of alpha-beta T cell activation regulation of leukocyte activation positive regulation of biological process 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 CD4-positive, alpha-beta T cell activation positive regulation of lymphocyte activation positive regulation of cell activation cell adhesion multicellular organismal process regulation of cellular process regulation of alpha-beta T cell activation regulation of leukocyte activation positive regulation of biological process 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 CD4-positive, alpha-beta T cell activation positive regulation of lymphocyte activation positive regulation of cell activation cell adhesion cell-cell adhesion T cell activation CD4-positive, alpha-beta T cell activation positive regulation of leukocyte activation alpha-beta T cell activation regulation of immune system process regulation of multicellular organismal 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 positive regulation of alpha-beta T cell activation regulation of CD4-positive, alpha-beta T cell activation immune system process regulation of leukocyte cell-cell adhesion positive regulation of multicellular organismal process cellular process regulation of lymphocyte activation response to stimulus immune response positive regulation of response to stimulus positive regulation of immune response regulation of response to stimulus regulation of immune response antigen processing and presentation antigen processing and presentation of peptide or polysaccharide antigen via MHC class II antigen processing and presentation of endogenous peptide antigen via MHC class II antigen processing and presentation of endogenous peptide antigen antigen processing and presentation of peptide antigen via MHC class II antigen processing and presentation of peptide antigen antigen processing and presentation of endogenous 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 system process nervous system process cognition 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 dendritic cell antigen processing and presentation myeloid dendritic cell antigen processing and presentation 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 adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains positive regulation of lymphocyte mediated immunity regulation of adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains positive regulation of leukocyte mediated cytotoxicity leukocyte mediated immunity positive regulation of immune effector process positive regulation of adaptive immune response regulation of T cell mediated immunity T cell mediated cytotoxicity positive regulation of T cell mediated cytotoxicity regulation of adaptive immune response regulation of leukocyte mediated cytotoxicity leukocyte mediated cytotoxicity immune effector process regulation of leukocyte mediated immunity regulation of T cell mediated cytotoxicity regulation of lymphocyte mediated immunity positive regulation of T cell mediated immunity regulation of cell killing positive regulation of cell killing cell killing regulation of leukocyte differentiation mononuclear cell differentiation regulation of cell differentiation lymphocyte differentiation regulation of cell development multicellular organism development cell differentiation regulation of T-helper cell differentiation anatomical structure development T cell differentiation developmental process T-helper cell differentiation leukocyte differentiation cellular developmental process regulation of developmental process cell development regulation of CD4-positive, alpha-beta T cell differentiation regulation of alpha-beta T cell differentiation CD4-positive, alpha-beta T cell differentiation regulation of T cell differentiation alpha-beta T cell differentiation regulation of lymphocyte differentiation regulation of multicellular organismal development hemopoiesis regulation of hemopoiesis immunological memory formation process cell activation involved in immune response positive regulation of T cell differentiation positive regulation of developmental process positive regulation of memory T cell differentiation positive regulation of cell development memory T cell differentiation T cell activation involved in immune response positive regulation of hemopoiesis positive regulation of cell differentiation leukocyte activation involved in immune response lymphocyte activation involved in immune response T cell differentiation involved in immune response regulation of memory T cell differentiation immunological memory process positive regulation of leukocyte differentiation positive regulation of lymphocyte differentiation positive regulation of CD4-positive, alpha-beta T cell differentiation positive regulation of regulatory T cell differentiation regulation of CD4-positive, CD25-positive, alpha-beta regulatory T cell differentiation positive regulation of alpha-beta T cell differentiation positive regulation of CD4-positive, CD25-positive, alpha-beta regulatory T cell differentiation regulation of regulatory T cell differentiation CD4-positive, CD25-positive, alpha-beta regulatory T cell differentiation regulatory T cell differentiation	membrane-bounded organelle intracellular anatomical structure intracellular vesicle intracellular organelle cellular anatomical structure bounding membrane of organelle cytoplasmic vesicle vesicle membrane clathrin-coated vesicle endocytic vesicle membrane coated vesicle vesicle endocytic vesicle clathrin-coated vesicle membrane membrane-bounded organelle intracellular anatomical structure intracellular vesicle intracellular organelle cellular anatomical structure bounding membrane of organelle cytoplasmic vesicle vesicle membrane clathrin-coated vesicle endocytic vesicle membrane coated vesicle vesicle endocytic vesicle clathrin-coated vesicle membrane clathrin-coated endocytic vesicle membrane membrane intracellular membrane-bounded organelle clathrin-coated endocytic vesicle cytoplasmic vesicle membrane coated vesicle membrane organelle cytoplasm organelle membrane extracellular exosome extracellular vesicle extracellular organelle extracellular region extracellular space extracellular membrane-bounded organelle cell surface 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 late endosome membrane endomembrane system late endosome lytic vacuole vacuole lysosome organelle subcompartment lumenal side of endoplasmic reticulum membrane side of membrane lumenal side of membrane endoplasmic reticulum subcompartment nuclear outer membrane-endoplasmic reticulum membrane network endoplasmic reticulum endoplasmic reticulum membrane immunological synapse vacuolar membrane lytic vacuole membrane lysosomal membrane Golgi membrane Golgi apparatus early endosome early endosome membrane autolysosome autolysosome membrane secondary lysosome Golgi apparatus subcompartment trans-Golgi network membrane trans-Golgi network transport vesicle transport vesicle membrane COPII-coated ER to Golgi transport vesicle ER to Golgi transport vesicle membrane

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
D [auth G], H	IPR021963	T cell CD4 receptor C-terminal region	Domain
D [auth G], H	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
D [auth G], H	IPR013106	Immunoglobulin V-set domain	Domain
D [auth G], H	IPR000973	T-cell surface antigen CD4	Family
D [auth G], H	IPR003599	Immunoglobulin domain subtype	Domain
D [auth G], H	IPR008424	Immunoglobulin C2-set	Domain
D [auth G], H	IPR013151	Immunoglobulin-like beta-sandwich domain	Domain
D [auth G], H	IPR015274	CD4, extracellular	Domain
D [auth G], H	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
D [auth G], H	IPR007110	Immunoglobulin-like domain	Domain
D [auth G], H	IPR003598	Immunoglobulin subtype 2	Domain
C, G [auth F]	IPR001364	Haemagglutinin, influenzavirus A/B	Family
C, G [auth F]	IPR008980	Viral capsid/haemagglutinin protein	Homologous Superfamily
C, G [auth F]	IPR000149	Haemagglutinin, influenzavirus A	Family
C, G [auth F]	IPR013828	Haemagglutinin, HA1 chain, alpha/beta domain superfamily	Homologous Superfamily
B, F [auth E]	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
B, F [auth E]	IPR011162	MHC classes I/II-like antigen recognition protein	Homologous Superfamily
B, F [auth E]	IPR003006	Immunoglobulin/major histocompatibility complex, conserved site	Conserved Site
B, F [auth E]	IPR014745	MHC class II, alpha/beta chain, N-terminal	Homologous Superfamily
B, F [auth E]	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
B, F [auth E]	IPR007110	Immunoglobulin-like domain	Domain
B, F [auth E]	IPR050160	Major Histocompatibility Complex/Immunoglobulin	Family
B, F [auth E]	IPR003597	Immunoglobulin C1-set	Domain
B, F [auth E]	IPR000353	MHC class II, beta chain, N-terminal	Domain
A, E [auth D]	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
A, E [auth D]	IPR050160	Major Histocompatibility Complex/Immunoglobulin	Family
A, E [auth D]	IPR003597	Immunoglobulin C1-set	Domain
A, E [auth D]	IPR011162	MHC classes I/II-like antigen recognition protein	Homologous Superfamily
A, E [auth D]	IPR003006	Immunoglobulin/major histocompatibility complex, conserved site	Conserved Site
A, E [auth D]	IPR014745	MHC class II, alpha/beta chain, N-terminal	Homologous Superfamily
A, E [auth D]	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A, E [auth D]	IPR007110	Immunoglobulin-like domain	Domain
A, E [auth D]	IPR001003	MHC class II, alpha chain, N-terminal	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
D [auth G], H	Pharos: P01730	Duchenne muscular dystrophy diabetes mellitus AIDS-Related Opportunistic Infections coronary artery disease lymphopenia cryptococcosis malignant glioma neutropenia Duchenne and Becker muscular dystrophy ovarian disease adult acute respiratory distress syndrome glioblastoma pneumonia hepatitis B virus infection rheumatoid arthritis Duchenne muscular dystrophy diabetes mellitus AIDS-Related Opportunistic Infections coronary artery disease lymphopenia cryptococcosis malignant glioma neutropenia Duchenne and Becker muscular dystrophy ovarian disease adult acute respiratory distress syndrome glioblastoma pneumonia hepatitis B virus infection rheumatoid arthritis arthritic joint disease HIV infectious disease severe combined immunodeficiency syphilis autoimmune disease IgA glomerulonephritis toxoplasmosis breast carcinoma influenza uveitis candidiasis kidney disease vertebral column disease colorectal cancer lung carcinoma COVID-19 lymphoproliferative syndrome cutaneous lupus erythematosus measles diarrheal disease obesity disorder peripheral neuropathy agammaglobulinemia heart disease prostate disease allergic disease hepatitis C virus infection rhinitis asthma hypereosinophilic syndrome skin disease tetanus Becker muscular dystrophy inborn carbohydrate metabolic disorder tuberculosis breast disease interstitial lung disease vaccinia colitis leishmaniasis congenital T-cell immunodeficiency lymphatic system disease Crohn disease malaria demyelinating disease Okt4 epitope deficiency encephalitis pneumocystosis AIDS helminthiasis retinitis anemia herpes zoster sarcoidosis subependymal giant cell astrocytoma atherosclerosis hypertensive disorder thrombocytopenia bone marrow disease infectious meningitis uterine disease cancer invasive ductal breast carcinoma vasculitis colonic disease liver disease
B, F [auth E]	Pharos: P01911	Crohn disease narcolepsy rheumatoid arthritis sarcoidosis ulcerative colitis juvenile idiopathic arthritis nephrotic syndrome membranous glomerulonephritis psoriatic arthritis Hashimoto thyroiditis asthma pancreatitis follicular lymphoma chronic beryllium disease multiple sclerosis Crohn disease narcolepsy rheumatoid arthritis sarcoidosis ulcerative colitis juvenile idiopathic arthritis nephrotic syndrome membranous glomerulonephritis psoriatic arthritis Hashimoto thyroiditis asthma pancreatitis follicular lymphoma chronic beryllium disease multiple sclerosis angioedema type 1 diabetes mellitus oropharynx cancer eosinophilia-myalgia syndrome systemic lupus erythematosus typhoid fever visceral leishmaniasis alopecia areata lung carcinoma allergic disease urticaria limited scleroderma proteinuria Graves disease schizophrenia narcolepsy-cataplexy syndrome drug allergy bullous pemphigoid Familial Ménière disease cerebrovascular disorder reticulum cell sarcoma hepatitis B virus infection metabolic syndrome X colorectal adenoma sinusitis multiple sclerosis, susceptibility to 1 squamous cell carcinoma acquired metabolic disease hypothyroidism nasal cavity disease diabetes mellitus temporal arteritis IgA glomerulonephritis neoplasm of oropharynx diffuse scleroderma autism spectrum disorder nodular sclerosis classical Hodgkin lymphoma vitiligo B-cell chronic lymphocytic leukemia oral cavity cancer endogenous depression bipolar disorder eosinophilic granulomatosis with polyangiitis lymphoma C1 inhibitor deficiency primary biliary cholangitis cervical cancer head and neck cancer lymphosarcoma sarcoidosis, susceptibility to, 1 hepatitis C virus infection colorectal cancer Sjogren syndrome hepatocellular carcinoma myasthenia gravis Crohn's colitis squamous cell lung carcinoma Hodgkins lymphoma narcolepsy without cataplexy cutaneous lupus erythematosus systemic sclerosis idiopathic membranous glomerulonephritis nasopharyngeal disease diffuse cutaneous systemic sclerosis ileocolitis atopic eczema non-alcoholic fatty liver disease pemphigus vulgaris esophageal adenocarcinoma celiac disease rosacea head and neck squamous cell carcinoma chronic obstructive pulmonary disease CREST syndrome skin basal cell carcinoma myositis allergic rhinitis demyelinating disease Takayasu arteritis idiopathic pulmonary fibrosis arthritic joint disease neoplasm of mature B-cells inflammatory bowel disease autism neuromyelitis optica leprosy autoimmune disease non-Hodgkin lymphoma drug-induced liver injury osteoporosis Lyme disease peripheral arterial disease
A, E [auth D]	Pharos: P01903	toxic shock syndrome lung carcinoma multiple sclerosis juvenile dermatomyositis systemic sclerosis ulcerative colitis Parkinson disease Sjogren syndrome Crohn disease Graham Little Piccardi Lassueur syndrome pancreatic ductal adenocarcinoma pilocytic astrocytoma Hashimoto thyroiditis psoriatic arthritis Hodgkins lymphoma toxic shock syndrome lung carcinoma multiple sclerosis juvenile dermatomyositis systemic sclerosis ulcerative colitis Parkinson disease Sjogren syndrome Crohn disease Graham Little Piccardi Lassueur syndrome pancreatic ductal adenocarcinoma pilocytic astrocytoma Hashimoto thyroiditis psoriatic arthritis Hodgkins lymphoma skin basal cell carcinoma invasive ductal breast carcinoma systemic lupus erythematosus adrenal cortex carcinoma limb-girdle muscular dystrophy astrocytic tumor Becker muscular dystrophy malignant glioma celiac disease dermatomyositis neoplasm of mature B-cells Down syndrome non-alcoholic fatty liver disease esophageal adenocarcinoma osteoporosis pancreatic intraductal papillary-mucinous carcinoma Graham Little-Piccardi-Lassueur syndrome primary biliary cholangitis head and neck cancer IgA glomerulonephritis squamous cell lung carcinoma lung adenocarcinoma atopic eczema lymphoplasmacytic lymphoma breast cancer marginal zone lymphoma chronic obstructive pulmonary disease diabetes mellitus nephrotic syndrome Duchenne muscular dystrophy non-small cell lung carcinoma glioblastoma ovarian cancer Graves disease prostate carcinoma heart disease interstitial cystitis subependymal giant cell astrocytoma juvenile idiopathic arthritis temporal arteritis alopecia areata lung cancer vitiligo autism spectrum disorder malignant ependymoma breast carcinoma membranous glomerulonephritis myasthenia gravis diffuse scleroderma nodular sclerosis classical Hodgkin lymphoma osteoarthritis