Annotations: 1XMW

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1xmwa1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	I set domains	CD3 epsilon chain ectodomain fragment	house mouse (Mus musculus ) [TaxId: 10090 ], sheep (Ovis aries ) [TaxId: 9940 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	I set domains	8071963	4007543	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Immunoglobulin (Ig) domain-like	8071964	3000071	SCOP2 (2022-06-29)
A	SCOP2B Superfamily	Immunoglobulin (Ig) domain-like	8073453	3000071	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF16680	e1xmwA2	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF16680	ECOD (1.6)
A	PF16681	e1xmwA1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: PF16681	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF16680	T-cell surface glycoprotein CD3 delta chain (Ig_4)	T-cell surface glycoprotein CD3 delta chain	This is an immunoglobulin-like domain. It is found on the T-cell surface glycoprotein CD3 delta chain. CD3delta and CD3epsilon complex together as part of the T-cell receptor complex [1].	Domain
A	PF16681	Ig-like domain on T-cell surface glycoprotein CD3 epsilon chain (Ig_5)	Ig-like domain on T-cell surface glycoprotein CD3 epsilon chain	Ig_5 is an immunoglobulin domain found on T-cell surface glycoprotein CD3 epsilon chain. It forms a first-order complex with T-cell surface glycoprotein CD3 delta chain as part of the T-cell receptor complex [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Chimeric CD3 mouse Epsilon and sheep Delta Ectodomain Fragment Complex	molecular transducer activity transmembrane signaling receptor activity signaling receptor activity SH3 domain binding protein binding binding protein domain specific binding identical protein binding	developmental process thymic T cell selection multicellular organismal process cellular developmental process hemopoiesis cell activation cell development mononuclear cell differentiation lymphocyte activation lymphocyte differentiation positive thymic T cell selection leukocyte activation T cell differentiation in thymus T cell activation immune system process developmental process thymic T cell selection multicellular organismal process cellular developmental process hemopoiesis cell activation cell development mononuclear cell differentiation lymphocyte activation lymphocyte differentiation positive thymic T cell selection leukocyte activation T cell differentiation in thymus T cell activation immune system process cell differentiation positive T cell selection anatomical structure development T cell differentiation cellular process T cell selection leukocyte differentiation cellular response to stimulus regulation of biological process regulation of cellular process cell surface receptor signaling pathway response to stimulus signaling biological regulation signal transduction cell communication immune response adaptive immune response positive regulation of cell communication positive regulation of signal transduction positive regulation of biological process regulation of signal transduction intracellular signal transduction 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 positive regulation of cellular process regulation of signaling positive regulation of intracellular signal transduction regulation of response to stimulus calcium-mediated signaling regulation of cell communication positive regulation of signaling negative thymic T cell selection negative T cell selection regulation of cell-substrate adhesion positive regulation of cell adhesion regulation of cell adhesion cell-substrate adhesion positive regulation of cell-matrix adhesion cell adhesion cell-matrix adhesion positive regulation of cell-substrate adhesion regulation of cell-matrix adhesion cellular biosynthetic process positive regulation of cellular metabolic process positive regulation of macromolecule biosynthetic process positive regulation of metabolic process organic substance metabolic process positive regulation of biosynthetic process organic substance biosynthetic process positive regulation of macromolecule metabolic process regulation of biosynthetic process cellular metabolic process regulation of cellular metabolic process regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process regulation of cellular biosynthetic process regulation of gene expression biosynthetic process positive regulation of gene expression regulation of macromolecule biosynthetic process metabolic process macromolecule metabolic process regulation of metabolic process positive regulation of cellular biosynthetic process head development animal organ development brain development nervous system development multicellular organism development cerebellum development central nervous system development metencephalon development hindbrain development system development immune system development regulation of T cell anergy lymphocyte anergy regulation of lymphocyte anergy positive regulation of lymphocyte anergy positive regulation of T cell tolerance induction positive regulation of T cell anergy regulation of immune system process regulation of multicellular organismal process regulation of T cell tolerance induction positive regulation of immune system process T cell anergy T cell tolerance induction positive regulation of multicellular organismal process regulation of tolerance induction positive regulation of tolerance induction tolerance induction cell population proliferation leukocyte proliferation mononuclear cell proliferation lymphocyte proliferation T cell proliferation positive regulation of cell population proliferation regulation of leukocyte activation regulation of alpha-beta T cell activation positive regulation of alpha-beta T cell proliferation regulation of cell activation positive regulation of CD4-positive, alpha-beta T cell proliferation positive regulation of cell activation alpha-beta T cell proliferation positive regulation of leukocyte activation alpha-beta T cell activation regulation of leukocyte proliferation positive regulation of T cell activation regulation of CD4-positive, alpha-beta T cell proliferation positive regulation of lymphocyte proliferation positive regulation of T cell proliferation positive regulation of alpha-beta T cell activation regulation of cell population proliferation regulation of leukocyte cell-cell adhesion positive regulation of leukocyte proliferation positive regulation of leukocyte cell-cell adhesion leukocyte cell-cell adhesion positive regulation of cell-cell adhesion regulation of alpha-beta T cell proliferation positive regulation of lymphocyte activation positive regulation of CD4-positive, alpha-beta T cell activation cell-cell adhesion CD4-positive, alpha-beta T cell activation positive regulation of mononuclear cell proliferation regulation of cell-cell adhesion regulation of lymphocyte proliferation CD4-positive, alpha-beta T cell proliferation regulation of T cell activation regulation of T cell proliferation regulation of CD4-positive, alpha-beta T cell activation regulation of mononuclear cell proliferation regulation of lymphocyte activation lymphocyte costimulation T cell costimulation smoothened signaling pathway immune response-regulating cell surface receptor signaling pathway immune response-activating signaling pathway immune response-regulating signaling pathway positive regulation of immune response immune response-activating cell surface receptor signaling pathway T cell receptor signaling pathway regulation of immune response antigen receptor-mediated signaling pathway activation of immune response cell-cell adhesion mediated by integrin positive regulation of cell adhesion mediated by integrin regulation of cell adhesion mediated by integrin regulation of cell-cell adhesion mediated by integrin positive regulation of cell-cell adhesion mediated by integrin cell adhesion mediated by integrin negative regulation of signaling negative regulation of biological process negative regulation of cell communication negative regulation of smoothened signaling pathway negative regulation of cellular process regulation of smoothened signaling pathway negative regulation of response to stimulus negative regulation of signal transduction plasma membrane bounded cell projection organization cell projection organization neuron projection development cellular component organization generation of neurons neurogenesis neuron differentiation dendrite development neuron development cellular component organization or biogenesis regulation of cytokine production cytokine production regulation of interleukin-2 production interleukin-2 production positive regulation of interleukin-2 production positive regulation of cytokine production cell death apoptotic signaling pathway apoptotic process programmed cell death negative regulation of cellular metabolic process negative regulation of macromolecule metabolic process negative regulation of metabolic process negative regulation of cellular biosynthetic process negative regulation of gene expression negative regulation of biosynthetic process negative regulation of macromolecule biosynthetic process response to nutrient levels response to chemical response to nutrient regulation of interleukin-4 production positive regulation of interleukin-4 production interleukin-4 production regulation of type II interferon production type II interferon production positive regulation of type II interferon production regulation of protein modification process positive regulation of phosphorylation regulation of protein phosphorylation positive regulation of protein metabolic process peptidyl-tyrosine modification positive regulation of phosphate metabolic process regulation of primary metabolic process positive regulation of peptidyl-tyrosine phosphorylation positive regulation of protein modification process regulation of phosphate metabolic process peptidyl-amino acid modification phosphate-containing compound metabolic process protein metabolic process protein modification process phosphorus metabolic process positive regulation of protein phosphorylation organonitrogen compound metabolic process protein phosphorylation positive regulation of phosphorus metabolic process phosphorylation regulation of protein metabolic process regulation of peptidyl-tyrosine phosphorylation primary metabolic process macromolecule modification regulation of phosphorylation regulation of phosphorus metabolic process peptidyl-tyrosine phosphorylation	protein-containing complex plasma membrane protein complex membrane plasma membrane membrane protein complex cellular anatomical entity alpha-beta T cell receptor complex receptor complex cell periphery plasma membrane signaling receptor complex T cell receptor complex cell surface external side of plasma membrane side of membrane protein-containing complex plasma membrane protein complex membrane plasma membrane membrane protein complex cellular anatomical entity alpha-beta T cell receptor complex receptor complex cell periphery plasma membrane signaling receptor complex T cell receptor complex cell surface external side of plasma membrane side of membrane cell-cell junction anchoring junction cell junction membrane-bounded organelle intracellular organelle intracellular anatomical structure Golgi apparatus organelle cytoplasm intracellular membrane-bounded organelle endomembrane system neuron spine synapse neuron projection dendritic spine plasma membrane bounded cell projection somatodendritic compartment cell projection postsynapse dendrite dendritic tree cell body immunological synapse endoplasmic reticulum

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR032052	CD3 gamma/delta subunit, Ig-like domain	Domain
A	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A	IPR015484	CD3 protein, epsilon/gamma/delta subunit	Family
A	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
A	IPR003110	Phosphorylated immunoreceptor signalling ITAM	Repeat
A	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
A	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A	IPR007110	Immunoglobulin-like domain	Domain
A	IPR003110	Phosphorylated immunoreceptor signalling ITAM	Repeat
A	IPR003598	Immunoglobulin subtype 2	Domain
A	IPR015484	CD3 protein, epsilon/gamma/delta subunit	Family

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.