EPH receptor A2

Jump to navigation Jump to search
External IDsGeneCards: [1]
RefSeq (mRNA)



RefSeq (protein)



Location (UCSC)n/an/a
PubMed searchn/an/a
View/Edit Human

EPH receptor A2 (ephrin type-A receptor 2) is a protein that in humans is encoded by the EPHA2 gene.[1][2]


This gene belongs to the ephrin receptor subfamily of the protein-tyrosine kinase family. EPH and EPH-related receptors have been implicated in mediating developmental events, particularly in the nervous system. Receptors in the EPH subfamily typically have a single kinase domain and an extracellular region containing a Cys-rich domain and 2 fibronectin type III repeats. The ephrin receptors are divided into two groups based on the similarity of their extracellular domain sequences and their affinities for binding ephrin-A and ephrin-B ligands. This gene encodes a protein that binds ephrin-A ligands.[2]

Clinical significance

It may be implicated in BRAF mutated melanomas becoming resistant to BRAF-inhibitors and MEK inhibitors.[3] It is also the receptor by which Kaposi sarcoma-associated herpesvirus (KSHV) enters host cells; small molecule inhibitors of EphA2 have shown some ability to block KSHV entry into human cells.[4]


EPH receptor A2 has been shown to interact with:


  1. Sulman EP, Tang XX, Allen C, Biegel JA, Pleasure DE, Brodeur GM, Ikegaki N (April 1997). "ECK, a human EPH-related gene, maps to 1p36.1, a common region of alteration in human cancers". Genomics. 40 (2): 371–4. doi:10.1006/geno.1996.4569. PMID 9119409.
  2. 2.0 2.1 "Entrez Gene: EPHA2 EPH receptor A2".
  3. "Counteracting Drug Resistance in Melanoma". 2015.
  4. Hahn AS, Kaufmann JK, Wies E, Naschberger E, Panteleev-Ivlev J, Schmidt K, Holzer A, Schmidt M, Chen J, König S, Ensser A, Myoung J, Brockmeyer NH, Stürzl M, Fleckenstein B, Neipel F (2012). "The ephrin receptor tyrosine kinase A2 is a cellular receptor for Kaposi's sarcoma–associated herpesvirus". Nat. Med. 18 (6): 961–6. doi:10.1038/nm.2805. PMC 3645317. PMID 22635007.
  5. Kikawa KD, Vidale DR, Van Etten RL, Kinch MS (October 2002). "Regulation of the EphA2 kinase by the low molecular weight tyrosine phosphatase induces transformation". J. Biol. Chem. 277 (42): 39274–9. doi:10.1074/jbc.M207127200. PMID 12167657.
  6. 6.0 6.1 Pratt RL, Kinch MS (October 2002). "Activation of the EphA2 tyrosine kinase stimulates the MAP/ERK kinase signaling cascade". Oncogene. 21 (50): 7690–9. doi:10.1038/sj.onc.1205758. PMID 12400011.
  7. Pandey A, Lazar DF, Saltiel AR, Dixit VM (December 1994). "Activation of the Eck receptor protein tyrosine kinase stimulates phosphatidylinositol 3-kinase activity". J. Biol. Chem. 269 (48): 30154–7. PMID 7982920.

Further reading