ANTI RAC1B

Application

Anti-Rac1b Antibody, Cat. No. 09-271, is a rabbit polyclonal antibody that detects Ras-related C3 botulinum toxin substrate 1 (Rac1b) and has been tested for use in Immunocytochemistry, Immunohistochemistry (Paraffin), and Western Blotting.

Immunocytochemistry Analysis: A 1:500 dilution from a representative lot detected Rac1b in HeLa, A431, HUVEC, and NIH/3T3 cells.

Immunohistochemistry (Paraffin) Analysis: A 1:250 dilution from a representative detected Rac1b in human colon cancer and human prostate cancer tissue sections.

General description

Ras-related C3 botulinum toxin substrate 1 (UniProt: P63000; also known as Cell migration-inducing gene 5 protein, Ras-like protein TC25, p21-Rac1) is encoded by the RAC1 (also known as TC25, MIG5) gene (Gene ID: 5879) in human. Rac1 is a plasma membrane-associated small GTPase that cycles between active GTP-bound and inactive GDP-bound states. In its active state, it binds to a variety of effector proteins to regulate cellular responses. Two isoforms of Rac1 have been described that are produced by alternative splicing. Rac1b differs from Rac1a in that it has an additional 19 amino acids and is found in various tumors, such as breasts and colorectal. Rac1b has an accelerated GEF-independent GDP/GTP exchange and an impaired GTP hydrolysis, which is restored partially by GTPase-activating proteins. It can bind to the GTPase-binding domain of PAK, but not full-length PAK in a GTP-dependent manner, suggesting that the insertion does not completely abolish effector interaction. Isoform B is predominantly identified in skin and epithelial tissues from the intestinal tract. Its expression is elevated in colorectal tumors at various stages of neoplastic progression, as compared to their respective adjacent tissues.

Immunogen

KLH-conjugated linear peptide corresponding to 15 amino acids from the N-terminal half of human Rac1b.

Legal Information

UPSTATE is a registered trademark of Merck KGaA, Darmstadt, Germany

Other Notes

Concentration: Please refer to the Certificate of Analysis for the lot-specific concentration.

Physical form

Purified rabbit polyclonal antibody in PBS with 0.05% sodium azide and 30% glycerol.

Quality

Evaluated by Western Blotting in MCF7 cell lysate.

Western Blotting Analysis: A 1:1,000 dilution of this antibody detected Rac1b in MCF7 cell lysate.

Specificity

This rabbit polyclonal antibody specifically detects Rac1b in human and murine cells.

Target description

~17 kDa observed; 23.47 kDa calculated. Uncharacterized bands may be observed in some lysate(s).