1Q68 | pdb_00001q68

Solution structure of T-cell surface glycoprotein CD4 and Proto-oncogene tyrosine-protein kinase LCK fragments

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
B	d1q68b_	Peptides	Proto-oncogene tyrosine-protein kinase lck CD4/CD8 interacting region	Proto-oncogene tyrosine-protein kinase lck CD4/CD8 interacting region	Proto-oncogene tyrosine-protein kinase lck CD4/CD8 interacting region	Proto-oncogene tyrosine-protein kinase lck CD4/CD8 interacting region	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
A	d1q68a_	Peptides	CD4 and CD8 receptor regions	CD4 and CD8 receptor regions	CD4 and CD8 receptor regions	T-cell surface glycoprotein CD4	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF12104	T cell CD4 receptor C terminal region (Tcell_CD4_C)	T cell CD4 receptor C terminal region	This domain is the C terminal domain of the CD4 T cell receptor. The C terminal domain is the cytoplasmic domain which relays the signal for T cell activation. This process involves co-receptor internalisation. This domain is involved in binding to t ...	This domain is the C terminal domain of the CD4 T cell receptor. The C terminal domain is the cytoplasmic domain which relays the signal for T cell activation. This process involves co-receptor internalisation. This domain is involved in binding to the N terminal of Lck co-receptor in a Zn2+ clasp structure.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B	Proto-oncogene tyrosine-protein kinase LCK	protein antigen binding protein binding binding antigen binding phosphoric ester hydrolase activity phosphoprotein phosphatase activity protein serine/threonine phosphatase activity catalytic activity, acting on a protein hydrolase activity, acting on ester bonds phosphatase activity hydrolase activity catalytic activity phosphatidylinositol 3-kinase binding phosphoprotein binding protein antigen binding protein binding binding antigen binding phosphoric ester hydrolase activity phosphoprotein phosphatase activity protein serine/threonine phosphatase activity catalytic activity, acting on a protein hydrolase activity, acting on ester bonds phosphatase activity hydrolase activity catalytic activity phosphatidylinositol 3-kinase binding phosphoprotein binding phosphotyrosine residue binding protein phosphorylated amino acid binding protein phosphatase binding phosphatase binding enzyme binding protein tyrosine kinase activity kinase activity protein kinase activity transferase activity phosphotransferase activity, alcohol group as acceptor transferase activity, transferring phosphorus-containing groups adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding non-membrane spanning protein tyrosine kinase activity protein-containing complex binding signaling receptor binding T cell receptor binding ATPase binding identical protein binding phospholipase binding CD8 receptor binding SH2 domain binding protein domain specific binding CD4 receptor binding kinase binding protein kinase binding enzyme regulator activity enzyme activator activity molecular function activator activity phospholipase activator activity molecular function regulator activity lipase activator activity	response to stimulus response to chemical response to xenobiotic stimulus developmental process cellular developmental process hemopoiesis cell differentiation anatomical structure development cell development cellular process multicellular organismal process cell activation mononuclear cell differentiation lymphocyte activation response to stimulus response to chemical response to xenobiotic stimulus developmental process cellular developmental process hemopoiesis cell differentiation anatomical structure development cell development cellular process multicellular organismal process cell activation mononuclear cell differentiation lymphocyte activation lymphocyte differentiation leukocyte activation T cell activation immune system process T cell differentiation leukocyte differentiation regulation of body fluid levels wound healing hemostasis biological regulation blood coagulation response to stress coagulation regulation of biological quality response to wounding platelet activation cellular response to stimulus positive regulation of cell communication immune response-regulating cell surface receptor signaling pathway regulation of cellular process positive regulation of signal transduction positive regulation of T cell receptor signaling pathway signaling positive regulation of biological process regulation of antigen receptor-mediated signaling pathway regulation of signal transduction cell communication positive regulation of response to stimulus immune response-activating signaling pathway immune response-regulating signaling pathway positive regulation of immune response regulation of immune system process signal transduction positive regulation of immune system process positive regulation of cellular process regulation of biological process regulation of signaling cell surface receptor signaling pathway immune response-activating cell surface receptor signaling pathway immune response regulation of T cell receptor signaling pathway T cell receptor signaling pathway regulation of response to stimulus regulation of immune response regulation of cell communication antigen receptor-mediated signaling pathway activation of immune response positive regulation of antigen receptor-mediated signaling pathway positive regulation of signaling regulation of programmed cell death regulation of intrinsic apoptotic signaling pathway intracellular signal transduction positive regulation of apoptotic signaling pathway regulation of intracellular signal transduction intrinsic apoptotic signaling pathway positive regulation of programmed cell death regulation of apoptotic process positive regulation of intracellular signal transduction cell death positive regulation of apoptotic process apoptotic signaling pathway positive regulation of intrinsic apoptotic signaling pathway apoptotic process programmed cell death regulation of apoptotic signaling pathway positive regulation of cell adhesion regulation of cell adhesion positive regulation of cell-cell adhesion heterotypic cell-cell adhesion cell adhesion cell-cell adhesion positive regulation of heterotypic cell-cell adhesion regulation of cell-cell adhesion regulation of heterotypic cell-cell adhesion regulation of leukocyte activation regulation of cell activation positive regulation of leukocyte cell-cell adhesion leukocyte cell-cell adhesion positive regulation of lymphocyte activation positive regulation of cell activation positive regulation of leukocyte activation regulation of multicellular organismal process positive regulation of T cell activation regulation of T cell activation lymphocyte costimulation regulation of leukocyte cell-cell adhesion positive regulation of multicellular organismal process T cell costimulation regulation of lymphocyte activation B cell receptor signaling pathway alpha-beta T cell activation NK T cell activation Fc receptor signaling pathway Fc-gamma receptor signaling pathway CD27 signaling pathway leukocyte migration cell migration cell motility calcium ion transmembrane import into cytosol transport monoatomic ion transmembrane transport establishment of localization calcium ion transport metal ion transport monoatomic cation transmembrane transport transmembrane transport release of sequestered calcium ion into cytosol localization monoatomic ion transport monoatomic cation transport calcium ion transmembrane transport cell surface receptor protein tyrosine kinase signaling pathway enzyme-linked receptor protein signaling pathway	cell-cell junction cellular anatomical structure anchoring junction cell junction extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle extracellular region organelle vesicle extracellular membrane-bounded organelle intracellular anatomical structure cytoplasm cell-cell junction cellular anatomical structure anchoring junction cell junction extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle extracellular region organelle vesicle extracellular membrane-bounded organelle intracellular anatomical structure cytoplasm cytosol intracellular membraneless organelle pericentriolar material intracellular organelle centrosome microtubule organizing center cytoskeleton membraneless organelle microtubule cytoskeleton cell periphery plasma membrane membrane membrane microdomain membrane raft immunological synapse
A	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	maintenance of protein location localization cellular localization maintenance of protein location in cell macromolecule localization cellular process intracellular protein localization maintenance of location maintenance of location in cell regulation of defense response regulation of biological process response to stimulus regulation of response to external stimulus defense response maintenance of protein location localization cellular localization maintenance of protein location in cell macromolecule localization cellular process intracellular protein localization maintenance of location maintenance of location in cell regulation of defense response regulation of biological process response to stimulus regulation of response to external stimulus defense response biological regulation positive regulation of biological process response to external stimulus regulation of inflammatory response positive regulation of response to stimulus positive regulation of response to external stimulus positive regulation of inflammatory response regulation of response to stimulus regulation of response to stress response to stress positive regulation of defense response inflammatory 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 immune system process cell differentiation anatomical structure development T cell differentiation leukocyte differentiation interleukin-15-mediated signaling pathway cellular response to stimulus regulation of cellular process cell surface receptor signaling pathway signaling response to cytokine cellular response to interleukin-15 cytokine-mediated signaling pathway cell communication response to peptide response to chemical cellular response to cytokine stimulus signal transduction 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 positive regulation of cellular 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 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 cell chemotaxis chemotaxis leukocyte migration taxis cell migration cell motility leukocyte chemotaxis locomotion 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 immune response regulation of adaptive immune response 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 signaling receptor complex T cell receptor complex membrane microdomain membrane raft organelle subcompartment endoplasmic reticulum subcompartment nuclear outer membrane-endoplasmic reticulum membrane network endoplasmic reticulum membrane early endosome endosome

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B	IPR008266	Tyrosine-protein kinase, active site	Active Site
B	IPR020635	Tyrosine-protein kinase, catalytic domain	Domain
B	IPR036028	SH3-like domain superfamily	Homologous Superfamily
B	IPR000719	Protein kinase domain	Domain
B	IPR035850	Tyrosine-protein kinase Lck, SH2 domain	Domain
B	IPR001452	SH3 domain	Domain
B	IPR017441	Protein kinase, ATP binding site	Binding Site
B	IPR036860	SH2 domain superfamily	Homologous Superfamily
B	IPR000980	SH2 domain	Domain
B	IPR001245	Serine-threonine/tyrosine-protein kinase, catalytic domain	Domain
B	IPR035749	Lck, SH3 domain	Domain
B	IPR011009	Protein kinase-like domain superfamily	Homologous Superfamily
B	IPR050198	Non-receptor tyrosine kinases involved in cell signaling	Family
A	IPR021963	T cell CD4 receptor C-terminal region	Domain
A	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
A	IPR013106	Immunoglobulin V-set domain	Domain
A	IPR003599	Immunoglobulin domain subtype	Domain
A	IPR008424	Immunoglobulin C2-set	Domain
A	IPR013151	Immunoglobulin-like beta-sandwich domain	Domain
A	IPR015274	CD4, extracellular	Domain
A	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A	IPR007110	Immunoglobulin-like domain	Domain
A	IPR003598	Immunoglobulin subtype 2	Domain
A	IPR000973	T-cell surface glycoprotein CD4, mammals	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
B	: P06239	severe combined immunodeficiency due to LCK deficiency cancer atopic eczema cutaneous lupus erythematosus Philadelphia Chromosome Positive Chronic Myelocytic Leukemia renal cell carcinoma B-cell chronic lymphocytic leukemia interstitial cystitis sarcoidosis Sjogren syndrome osteosarcoma psoriasis ulcerative colitis
A	: 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 pneumonia adult acute respiratory distress syndrome glioblastoma rheumatoid arthritis hepatitis B virus infection Duchenne muscular dystrophy diabetes mellitus AIDS-Related Opportunistic Infections coronary artery disease lymphopenia cryptococcosis malignant glioma neutropenia Duchenne and Becker muscular dystrophy ovarian disease pneumonia adult acute respiratory distress syndrome glioblastoma rheumatoid arthritis hepatitis B virus infection severe combined immunodeficiency arthritic joint disease HIV infectious disease 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 prostate disease agammaglobulinemia heart disease rhinitis allergic disease hepatitis C virus infection skin disease asthma hypereosinophilic syndrome 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 pneumocystosis encephalitis retinitis AIDS helminthiasis sarcoidosis anemia herpes zoster 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