|Application ||WB, IHC|
|Calculated MW||25038 Da|
|Other Names||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, MB1|
|Target/Specificity||A synthetic peptide derived from the extracellular region of human CD79a protein.|
|Format||50 mM Tris-Glycine (pH 7.4), 0.15 M NaCl, 40% Glycerol, 0.01% sodium azide and 0.05% BSA.|
|Storage||Maintain refrigerated at 2-8°C for up to 6 months. For long term storage store at -20°C in small aliquots to prevent freeze-thaw cycles.|
|Precautions||CD79a/mb-1 Antibody is for research use only and not for use in diagnostic or therapeutic procedures.|
|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.|
|Cellular Location||Cell membrane; Single-pass type I membrane protein. Note=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.|
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Provided below are standard protocols that you may find useful for product applications.
CD79a (mb-1/ B lymphocyte-specific MB-1 protein) was originally identified on the basis of its restricted expression in lymphocytes of B lineage (1). CD79a associates with surface IgM-receptors; it has been implicated in the signal transduction pathways and in the regulation of type of type 2A-related serine/threonine phosphatases catalytic activity (2). A disulphide-linked heterodimer, consisting of CD79a (mb-1) and CD79b / B29 polypeptides, non-covalently associates with membrane-bound immunoglobulins on B cells to constitute the B cell Ag receptor. CD79 is 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. Stimulates SYK autophosphorylation and activation. Binds to BLNK, bringing BLNK into proximity with SYK and allowing SYK to phosphorylate BLNK. Also CD79 interacts with and increases activity of some Src-family tyrosine kinases. (3).
1. Mason DY et al. Blood 86(4):1453-1459,1995.
2. Nanahoshi M et al. FEBS Lett. 5;446(1):108-112, 1999.
3. The UniProt Consortium, The Universal Protein Resource(UniProt), Nucleic Acids Res. 36:D190-D195 (2008)
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