CD79a est un gène codé par le symbole CD79A. D'autres noms incluent: B-cell antigen receptor complex-associated protein alpha chain; Ig-alpha; MB-1 membrane glycoprotein; Membrane-bound immunoglobulin-associated protein; Surface IgM-associated protein; IGA; MB1. CD79a a une masse de 25.04kDa, une longueur d'acide aminé de 226, et est impliqué dans Agammaglobulinemia 3, autosomal recessive.
Nous proposons 60 des anticorps contre CD79a, élevé dans Lapin et Souris, 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, Furet, Goat, Cochon d'Inde, Cheval, Primates et Opossum.
Informations sur les Gènes et les Protéines
Résumé UniProt
Required in cooperation with CD79B for initiation of the signal transduction cascade activated by binding of antigen to the B-cell antigen receptor complex (BCR) which leads to internalization of the complex, trafficking to late endosomes and antigen presentation. Also required for BCR surface expression and for efficient differentiation of pro- and pre-B-cells. Stimulates SYK autophosphorylation and activation. Binds to BLNK, bringing BLNK into proximity with SYK and allowing SYK to phosphorylate BLNK. Also interacts with and increases activity of some Src-family tyrosine kinases. Represses BCR signaling during development of immature B-cells.
Résumé Entrez
The B lymphocyte antigen receptor is a multimeric complex that includes the antigen-specific component, surface immunoglobulin (Ig). Surface Ig non-covalently associates with two other proteins, Ig-alpha and Ig-beta, which are necessary for expression and function of the B-cell antigen receptor. This gene encodes the Ig-alpha protein of the B-cell antigen component. Alternatively spliced transcript variants encoding different isoforms have been described.
Spécificité tissulaire
B-cells.
Implication dans la maladie
Agammaglobulinemia 3, autosomal recessive: A primary immunodeficiency characterized by profoundly low or absent serum antibodies and low or absent circulating B-cells due to an early block of B-cell development. Affected individuals develop severe infections in the first years of life.
Modification post-traductionnelle
Phosphorylated on tyrosine, serine and threonine residues upon B-cell activation. Phosphorylation of tyrosine residues by Src-family kinases is an early and essential feature of the BCR signaling cascade. The phosphorylated tyrosines serve as docking sites for SH2-domain containing kinases, leading to their activation which in turn leads to phosphorylation of downstream targets. Phosphorylated by LYN. Phosphorylation of serine and threonine residues may prevent subsequent tyrosine phosphorylation.
Localisation cellulaire
Cell membrane.
Following antigen binding, the BCR has been shown to translocate from detergent-soluble regions of the cell membrane to lipid rafts although signal transduction through the complex can also occur outside lipid rafts.
