Paxillin (Ser-83), Phosphospecific Antibody

Product Specifications

Background

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 tyrosine, threonine, and serine sites. Serine and threonine phosphorylation of paxillin occur in response to growth-factor activation, PKC activators, and fibronectins. Phosphorylation of Ser-85, Ser-178, and Thr-538 may be important sites for regulating paxillin activity. Paxillin phosphorylation of Thr-538 occurs in response to TPA-activated PKCs in vitro, and this phosphorylation may contribute to dissolution of the actin cytoskeleton and redistribution of LFA-1 integrins in vivo.

Swiss Prot

Q8VI36

Modification Site

Ser-83

Host

Rabbit

Cross Reactivity

Mouse, Rat

Target

Paxillin (Ser-83)

Clonality

Polyclonal

Isotype

IgG

Conjugation

Unconjugated

Source

Phospho-Paxillin (Ser-83) synthetic peptide (coupled to KLH) corresponding to amino acid residues around serine 83 of mouse paxillin.

Applications

Purification

Antigen Affinity purification

Dilution

WB (1:300-5000)

Buffer

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

Modification

Phosphorylation

Storage Conditions

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.

Specificity

The antibody detects a 68kDa* protein corresponding to the molecular mass of phosphorylated paxillin on SDS-PAGE immunoblots of NGF treated rat PC12 cells, as well as calyculin A treated human A431 cells and mouse macrophages. This sequence is highly conserved in rat and human paxillin and is also found in all isoforms (a, b, g) of paxillin.