CD3 epsilon est un gène codé par le symbole CD3E. D'autres noms incluent: T-cell surface glycoprotein CD3 epsilon chain; T-cell surface antigen T3/Leu-4 epsilon chain; CD3E; T3E. CD3 epsilon a une masse de 23.15kDa, une longueur d'acide aminé de 207, et est impliqué dans Immunodeficiency 18.
Nous proposons 105 des anticorps contre CD3 epsilon, élevé dans Lapin, Souris, Chèvre, Rat et Hamster, qui sont appropriés pour le WB, IHC, ELISA, ICC/IF, Cytométrie en Flux et IP avec des échantillons dérivés de Humain, Souris, Rat, Bovin, Porcin, Lapin, Singe, Poulet, Canin, Félin, Cochon d'Inde, Cheval, Raccoon et Xenopus.
Informations sur les Gènes et les Protéines
Résumé UniProt
Part of the TCR-CD3 complex present on T-lymphocyte cell surface that plays an essential role in adaptive immune response. When antigen presenting cells (APCs) activate T-cell receptor (TCR), TCR-mediated signals are transmitted across the cell membrane by the CD3 chains CD3D, CD3E, CD3G and CD3Z. All CD3 chains contain immunoreceptor tyrosine-based activation motifs (ITAMs) in their cytoplasmic domain. Upon TCR engagement, these motifs become phosphorylated by Src family protein tyrosine kinases LCK and FYN, resulting in the activation of downstream signaling pathways (PubMed:2470098). In addition of this role of signal transduction in T-cell activation, CD3E plays an essential role in correct T-cell development. Initiates the TCR-CD3 complex assembly by forming the two heterodimers CD3D/CD3E and CD3G/CD3E. Participates also in internalization and cell surface down-regulation of TCR-CD3 complexes via endocytosis sequences present in CD3E cytosolic region (PubMed:10384095, PubMed:26507128).
Résumé Entrez
The protein encoded by this gene is the CD3-epsilon polypeptide, which together with CD3-gamma, -delta and -zeta, and the T-cell receptor alpha/beta and gamma/delta heterodimers, forms the T-cell receptor-CD3 complex. This complex plays an important role in coupling antigen recognition to several intracellular signal-transduction pathways. The genes encoding the epsilon, gamma and delta polypeptides are located in the same cluster on chromosome 11. The epsilon polypeptide plays an essential role in T-cell development. Defects in this gene cause immunodeficiency. This gene has also been linked to a susceptibility to type I diabetes in women.
Implication dans la maladie
Immunodeficiency 18: An autosomal recessive primary immunodeficiency characterized by onset in infancy or early childhood of recurrent infections. The severity is variable, encompassing both a mild immunodeficiency and severe combined immunodeficiency (SCID), resulting in early death without bone marrow transplantation in some patients. Immunologic work-up of the IMD18 SCID patients shows a T cell-negative, B cell-positive, natural killer (NK) cell-positive phenotype, whereas T-cell development is not impaired in the mild form of IMD18.
Modification post-traductionnelle
Phosphorylated on Tyr residues after T-cell receptor triggering by LCK in association with CD4/CD8.
Localisation cellulaire
Cell membrane.
