Ephexin-1 (Tyr-87), phospho-specific polyclonal, anti-human, mouse, rat, chicken

Background:
The Eph family of receptor tyrosine kinases, and their ephrin ligands, are important for cell positioning and morphogenesis during development. EphA4 receptor can inhibit axon outgrowth and has roles in regulating axon projections during neural development. Eph signaling pathways require both receptor kinase activity and activation of Rho-GTPase guanine nucleotide-exchange factors (GEFs). Ephexin-1 is a Dbl family GEF that may be important for regulating Rho GTPase activity downstream of EphA4/FGFR complexes. EphA4 activation leads to Src kinase phosphorylation of Tyr-87 in ephexin-1, which enhances activation of RhoA, but not Rac1 or Cdc42. In addition, ephexin-1 also binds FGFRs, and is phosphorylated at Tyr-87, as well as other tyrosine sites.

Immunogen: Phospho-ephexin-1 (Tyr-87) synthetic peptide (coupled to carrier protein) corresponds to amino acids surrounding tyrosine 87 in mouse ephexin-1. This sequence has significant homology to the conserved site in human and rat ephexin-1.

Specificity: This polyclonal antibody was affinity purified using phospho-ephexin-1 (Tyr-87) peptide. The purified antibody detects an 80 kDa* band corresponding to ephexin-1 in Western blots of human A431 treated with pervanadate. This band is removed by alkaline phosphatase treatment.

Buffer/Storage:
Rabbit polyclonal, affinity-purified antibody is supplied in 100μl phosphate-buffered saline, 50% glycerol, 1 mg/ml BSA, and 0.05% sodium azide. Store at –20°C. Stable for 1 year.