Cell Signaling Technology

Product Pathways - Adhesion

p130 Cas Antibody #12015

Applications Reactivity Sensitivity MW (kDa) Source
W IP H Endogenous 130 Rabbit

Applications Key:  W=Western Blotting  IP=Immunoprecipitation
Reactivity Key:  H=Human
Species cross-reactivity is determined by western blot. Species enclosed in parentheses are predicted to react based on 100% sequence homology.

Protocols

Specificity / Sensitivity

p130 Cas Antibody recognizes endogenous levels of total p130 Cas protein.

Source / Purification

Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Pro118 of human p130 Cas protein. Antibodies are purified by protein A and peptide affinity chromatography.

Western Blotting

Western Blotting

Western blot analysis of extracts from Hep G2, HeLa, and U-2 OS cells using p130 Cas Antibody.

IP

IP

Immunoprecipitation of p130 Cas from HeLa cell extracts, using Normal Rabbit IgG #2729 (lane 2) or p130 Cas Antibody (lane 3). Lane 1 is 10% input. Western blot analysis was performed using p130 Cas Antibody.

Background

p130 Cas (Crk-associated substrate) is a docking protein containing multiple protein-protein interaction domains. The amino-terminal SH3 domain may function as a molecular switch regulating CAS tyrosine phosphorylation, as it interacts with focal adhesion kinase (FAK) (1) and the FAK-related kinase PYK2 (2), as well as the tyrosine phosphatases PTP-1B (3) and PTP-PEST (4). The carboxy-terminal Src binding domain (SBD) contains a proline-rich motif that mediates interaction with the SH3 domains of Src-family kinases (SFKs) and a tyrosine phosphorylation site (Tyr668 and/or Tyr670) that can promote interaction with the SH2 domain of SFKs (5). The p130 Cas central substrate domain, the major region of tyrosine phosphorylation, is characterized by 15 tyrosines present in Tyr-X-X-Pro (YXXP) motifs, including Tyr165, 249, and 410. When phosphorylated, most YXXP motifs are able to serve as docking sites for proteins with SH2 or PTB domains including adaptors, C-Crk, Nck, and inositol 5'-phosphatase 2 (SHIP2) (6). The tyrosine phosphorylation of p130 Cas has been implicated as a key signaling step in integrin control of normal cellular behaviors including motility, proliferation, and survival. Aberrant Cas tyrosine phosphorylation may contribute to cell transformation by certain oncoproteins (5).

  1. Polte, T.R. and Hanks, S.K. (1997) J Biol Chem 272, 5501-9.
  2. Astier, A. et al. (1997) J. Biol. Chem. 272, 228-232.
  3. Liu, F. et al. (1996) J. Biol. Chem. 271, 31290-31295.
  4. Garton, A. J. et al. (1997) Oncogene 15, 877-885.
  5. Ruest, P.J. et al. (2001) Mol Cell Biol 21, 7641-52.
  6. Bouton, A. H. et al. (2001) Oncogene 20, 6448-6458.

Application References

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Companion Products

For Research Use Only. Not For Use In Diagnostic Procedures.

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