CD79a Mouse Monoclonal Antibody [C1-E8] (EM1902-29)

UNIPROT #

P11912

PROTEIN NAME

CD79a

SYNONYMS

B lymphocyte-specific MB1 protein antibody;B-cell antigen receptor complex-associated protein alpha chain antibody;CD 79a antibody;CD79a antibody;CD79a antigen (immunoglobulin-associated alpha) antibody;CD79A antigen antibody;CD79a molecule, immunoglobulin-associated alpha antibody;CD79A_HUMAN antibody;Ig alpha antibody;Ig-alpha antibody;IGA antibody;IgM-alpha antibody;Immunoglobulin-associated alpha antibody;Ly54 antibody;MB-1 membrane glycoprotein antibody;MB1 antibody;Membrane-bound immunoglobulin-associated protein antibody;Surface IgM-associated protein antibody

TISSUE SPECIFICITY

B-cells.

POST-TRANSLATIONAL MODIFICATION

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.; Arginine methylation in the ITAM domain may interfere with the binding of SYK. It promotes signals leading to B-cell differentiation (By similarity).

SUBCELLULAR LOCATION

Cell membrane, Membrane

FUNCTION

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.