B-RAF monoclonal antibody

• Background:

  A-Raf, B-Raf, and c-Raf (Raf-1) are the main effectors recruited by GTP-bound Ras to activate the MEK-MAP kinase pathway. Activation of c-Raf is the best understood and involves phosphorylation at multiple activating sites, including Ser338, Tyr341, Thr491, Ser494, Ser497, and Ser499. p21-activated kinase (PAK) has been shown to phosphorylate c-Raf at Ser338, and the Src family phosphorylates Tyr341 to induce c-Raf activity. Ser338 of c-Raf corresponds to similar sites in A-Raf (Ser299) and B-Raf (Ser445), although this site is constitutively phosphorylated in B-Raf. Inhibitory 14-3-3 binding sites on c-Raf (Ser259 and Ser621) can be phosphorylated by Akt and AMPK, respectively. While A-Raf, B-Raf, and c-Raf are similar in sequence and function, differential regulation has been observed. Of particular interest, B-Raf contains three consensus Akt phosphorylation sites (Ser364, Ser428, and Thr439) and lacks a site equivalent to Tyr341 of c-Raf. Research studies have shown that the B-Raf mutation V600E results in elevated kinase activity and is commonly found in malignant melanoma. Six residues of c-Raf (Ser29, Ser43, Ser289, Ser296, Ser301, and Ser642) become hyperphosphorylated in a manner consistent with c-Raf inactivation. The hyperphosphorylation of these six sites is dependent on downstream MEK signaling and renders c-Raf unresponsive to subsequent activation events.

• Structure Composition:

  Liquid in PBS containing 50% glycerol, 0.5% BSA and 0.02% sodium azide, pH 7.3.

• Product Name Alternative:

  BRAF1; RAFB1; Serine/threonine-protein kinase B-raf; Proto-oncogene B-Raf; p94; v-Raf murine sarcoma viral oncogene homolog B1

• Swiss Prot:

  P15056

• Reactivity:

  Human, Mouse

• Immunogen:

  Purified recombinant human B Raf protein fragments expressed in E.coli.

• Conjugation:

  Unconjugated

• Related Pathways:

  ESC Pluripotency and Differentiation Signaling Pathway, ErbB HER Signaling, G Protein-coupled Receptors Signaling to MAPK Erk, MAPK Erk in Growth and Differentiation Pathway, Jak Stat : IL-6 Receptor Signaling, Inhibition of Apoptosis, T cell receptor signaling.

• Applications:

  WB

• Dilution:

  WB (1/500 - 1/1000)

• Purity:

  The antibody was purified by immunogen affinity chromatography.

• Modification:

  Unmodification

• Molecular Weight:

  ~ 84 kDa

• Storage Conditions:

  Store at 4°C short term. Aliquot and store at -20°C long term. Avoid freeze-thaw cycles.

• Notes:

  For research use only, not for use in diagnostic procedure.

• Specificity:

  Recognizes endogenous levels of B-RAF protein.

• Applications Notes:

  Western blot analysis of B-RAF expression in MDAMB468 (A), T47D (B), MCF7 (C), HCT116 (D), C2C12 (E), NIH3T3 (F), Hela (G) whole cell lysates.

• Host or Source:

  Mouse

• CAS Number:

  9007-83-4