Catalog # EX2755

phospho-EphA4 (Tyr-779) Peptide

Blocking Peptide

Application / Dilution
ELISA50 ng/well

Size 50 μg



The Eph family of Receptor tyrosine kinases and their Ephrin ligands are important for cell positioning and morphogenesis during development. Eph receptors are classified into 10 EphA and 6 EphB receptors, which preferentially bind to the type A and type B ephrins, respectively. The EphA4 receptor can inhibit axon outgrowth and has roles in regulating axon projections during neural development. EphA4 signaling pathways require its kinase activity and involve binding and activation of Rho-GTPase guanine nucleotide-exchange factors (GEFs). EphA4 activation leads autophosphorylation of Tyr-596 and Tyr-602, and the conserved sites in EphA2 are required for binding to the GEFs, Vav2 and Vav3, and ephrin-induced cell migration. The Tyr-779 site in the kinase domain is also phosphorylated in vivo and may regulate kinase activity. Activated EphA4 leads to Src kinase phosphorylation of the GEF, ephexin-1, and this activates RhoA. Thus, EphA4 signaling involves complex tyrosine phosphorylation in its cytoplasmic region along with interaction with several GEFs.



Fang, W.B. et al. (2008) J. Biol. Chem. 283(23):16017.
Lackmann, M. & Boyd, A.W. (2008). Sci. Signal. 1(15):re2.
Binns, K.L. et al. (2000) Mol. Cell. Biol. 20(13):4791.

Phospho-EphA4 (Tyr-779) synthetic peptide corresponding to amino acids surrounding tyrosine 779 in human EphA4. This sequence has significant homology to the conserved site in rat and mouse EphA4, and is conserved well in most other EphA family members, but has less conservation in EphB family members.

*For more information, see UniProt Accession P54764
Blocking Peptide is supplied in 50µl phosphate-buffered saline and 0.05% sodium azide.

The products are are safely shipped at ambient temperature for both domestic and international shipments. Each product is guaranteed to match the specifications as indicated on the corresponding technical data sheet. Please store at -20C upon arrival for long term storage.

This peptide is specifically recognized by EphA4 (Tyr-779) phospho-specific antibody (EP2751) in ELISA, and has been shown to block the reactivity of EP2751 in Western blot and is recommended for blocking in immunocytochemistry.

*All molecular weights (MW) are confirmed by comparison to Bio-Rad Rainbow Markers and to western blot mobilities of known proteins with similar MW.

This kit contains: