Anti-Paxillin Antibody, phospho-specific [Ser178]

Paxillin, a focal adhesion protein, is involved in focal adhesion formation during cell adhesion and migration. Paxillin contains LD motifs, LIM domains, and SH3-/SH2-binding domains that participate in a variety of protein-protein interactions with kinases, GTPase-activating proteins, and cytoskeletal proteins. Phosphorylation of paxillin occurs at both tyrosine and serine sites. Serine phosphorylation of paxillin occurs in response to growth-factor activation and fibronectins. Both JNK1 and cdc2 kinases can phosphorylate serine 178 in paxillin. The mutant form of paxillin (S178A) decreases the migration of keratocytes and epithelial cells. Thus, phosphorylation paxillin at serine 178 may be important during cell migration.

This antibody detects a 68 kDa protein corresponding to the molecular weight of phosphorylated paxillin on SDS-PAGE immunoblots of EGF treated A431 cells, but not in A431 control cells. Similar results were seen in calyculin A treated human A431 and aortic endothelial cells.

Epitope: phosphoserine 178

Synthetic peptide (coupled to KLH) corresponding to amino acid residues around serine 178 of human paxillin. This human sequence is highly conserved in rat and mouse paxillin.

Research Category
Signaling

Research Sub Category
Cytoskeletal Signaling

This Anti-Paxillin Antibody, phospho-specific [Ser178] is validated for use in ELISA, WB for the detection of Paxillin.

Western blot: 1:500 ELISA: 1:2000

Affinity-purified antibody is supplied in 100 μl phosphate-buffered saline, 50% glycerol, 1 mg/ml BSA, and 0.05% sodium azide.

Maintain at -20°C for one year from date of receipt. Do not aliquot.

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