bs-70638R

DATASHEET

Host: Rabbit

Target Protein: B-Raf (N-terminus)

Specificity: The antibody detects 105 and 95 kDa* bands corresponding to the molecular mass of B-Raf. The doublet observed in Jurkat cells may represent multipe isoforms of the B-Raf, since all bands are blocked specifically with B-Raf (N-terminus) peptide. This sequence has high homology with similar regions in rat and mouse B-Raf, and has low homology to other Raf family members.

Clonality: Polyclonal

Isotype: IgG

Swiss Prot: P15056

Source: A synthetic peptide (coupled to KLH) corresponding to amino acid residues in the N-terminus of human B-Raf.

Purification: Antigen Affinity purification

Storage Buffer: PBS + 1 mg/ml BSA, 0.05% NaN3 and 50% glycerol

Storage: Storage at -20°C is recommended, as aliquots may be taken without freeze/thawing due to presence of 50% glycerol. Stable for at least 1 year at -20°C.

Background:

The Ras-Raf-MAP kinase signaling pathway is involved in control of cell proliferation and differentiation. The Raf kinase family includes A-Raf, B-Raf, and C-Raf. Each family member has three highly conserved regions (CR1-3). The N-terminal CR1 contains the Ras-GTP-binding domain. The CR2 contains a negative regulatory serine residue (C-Raf (S259)/B-Raf(S365)) that may bind 14-3-3 proteins. The CR3 is the catalytic domain that contains phosphorylation sites for Raf-regulating enzymes within two segments, the N-region and the activation segment. Activation of C-Raf involves phosphorylation at many sites including Ser-338, Tyr-341, and multiple catalytic domain sites. In B-Raf, multiple phosphorylation sites have been identified, but their specific roles are uncertain. Phosphorylation of Ser-446 may prime B-Raf for activation, and Ser-446 and/or Ser-447 phosphorylation may be critical for B-Raf biological activity during PC12 differentiation. Ser-579 is required for growth factor activation and kinase activity. Thus, multiple sites of phosphorylation within Rafs may be important for regulation of their activity.