Anti-Ms Blnk Purified Rabbit Monoclonal Antibody

SLP65 / BLNK (SH2 domain-containing leukocyte-specific phosphoprotein of 65 kDa; B cell linker protein), also known as BASH, is an adaptor protein that plays key role in B cell activation initiated by cross-linking the B cell receptor (BCR) . Phosphorylated by Syk tyrosine kinase, SLP65 serves as a scaffold for Btk tyrosine kinase, Vav1 guanine nucleotide exchange factor, phospholipase C gamma2, as well as Grb2 and Nck adaptor proteins; thus represents a central linker protein that bridges the BCR-associated kinases with a multitude of signaling pathways.

A fusion protein representing amino acids 171-356 of human BLNK. The polyclonal antibody reacts with mouse SLP65 / BLNK, a cytosolic adaptor protein identified as two phosphoproteins migrating at 68 and 70 kDa in SDS/PAGE (alternatively spliced forms of human SLP65) .

Expressed in B-cell lineage and fibroblast cell lines (at protein level) . Highest levels of expression in the spleen, with lower levels in the liver, kidney, pancreas, small intestines and colon.

Functions as a central linker protein, downstream of the B-cell receptor (BCR), bridging the SYK kinase to a multitude of signaling pathways and regulating biological outcomes of B-cell function and development. Plays a role in the activation of ERK/EPHB2, MAP kinase p38 and JNK. Modulates AP1 activation. Important for the activation of NF-kappa-B and NFAT. Plays an important role in BCR-mediated PLCG1 and PLCG2 activation and Ca (2+) mobilization and is required for trafficking of the BCR to late endosomes. However, does not seem to be required for pre-BCR- mediated activation of MAP kinase and phosphatidyl-inositol 3 (PI3) kinase signaling. May be required for the RAC1-JNK pathway. Plays a critical role in orchestrating the pro-B cell to pre-B cell transition. May play an important role in BCR-induced B-cell apoptosis.