Anti-Cd79a Antibody Picoband®

Cluster of differentiation CD79A also known as B-cell antigen receptor complex-associated protein alpha chain and MB-1 membrane glycoprotein, is a protein that in humans is encoded by the CD79A gene. It is mapped to 7 A3; 7 13.49 cM. 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.

B-cell antigen receptor complex-associated protein alpha chain; Ig-alpha; MB-1 membrane glycoprotein; Membrane-bound immunoglobulin-associated protein; Surface IgM-associated protein; CD79a; Cd79a; Iga; Mb-1

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.

1. Ha, H., Kubagawa, H., Burrows, P. D. Molecular cloning and expression pattern of a human gene homologous to the murine mb-1 gene. J. Immun. 148: 1526-1531, 1992. 2. Hashimoto, S., Mohrenweiser, H. W., Gregersen, P. K., Chiorazzi, N. Chromosomal localization, genomic structure, and allelic polymorphism of the human CD79a (Ig-alpha/mb-1) gene. Immunogenetics 40: 287-295, 1994. 3. Minegishi, Y., Coustan-Smith, E., Rapalus, L., Ersoy, F., Campana, D., Conley, M. E. Mutations in Ig-alpha (CD79a) result in a complete block in B-cell development. J. Clin. Invest. 104: 1115-1121, 1999.

Store at -20°C for one year from date of receipt. After reconstitution, at 4°C for one month. It can also be aliquotted and stored frozen at -20°C for six months. Avoid repeated freeze-thaw cycles.