EPH receptor A2

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Protein EPHA2 PDB 1mqb.png
Available structures
PDBOrtholog search: PDBe RCSB
AliasesEPHA2, Epha2, AW545284, Eck, Myk2, Sek-2, Sek2, ARCC2, CTPA, CTPP1, CTRCT6, EPH receptor A2, ECK
External IDsMGI: 95278 HomoloGene: 20929 GeneCards: EPHA2
Gene location (Human)
Chromosome 1 (human)
Chr.Chromosome 1 (human)[1]
Chromosome 1 (human)
Genomic location for EPHA2
Genomic location for EPHA2
Band1p36.13Start16,124,337 bp[1]
End16,156,087 bp[1]
RNA expression pattern
PBB GE EPHA2 203499 at fs.png
More reference expression data
RefSeq (mRNA)



RefSeq (protein)



Location (UCSC)Chr 1: 16.12 – 16.16 MbChr 4: 141.3 – 141.33 Mb
PubMed search[3][4]
View/Edit HumanView/Edit Mouse

EPH receptor A2 (ephrin type-A receptor 2) is a protein that in humans is encoded by the EPHA2 gene.[5][6]


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.[6]

Clinical significance[edit]

It may be implicated in BRAF mutated melanomas becoming resistant to BRAF-inhibitors and MEK inhibitors.[7] It also the receptor by which Kaposi sarcoma-associated herpesvirus (KSHV) enters host cells and small molecule inhibitors of EphA2 have shown some ability to block KSHV entry into human cells.[8]


EPH receptor A2 has been shown to interact with:


  1. ^ a b c GRCh38: Ensembl release 89: ENSG00000142627 - Ensembl, May 2017
  2. ^ a b c GRCm38: Ensembl release 89: ENSMUSG00000006445 - Ensembl, May 2017
  3. ^ "Human PubMed Reference:".
  4. ^ "Mouse PubMed Reference:".
  5. ^ 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.
  6. ^ a b "Entrez Gene: EPHA2 EPH receptor A2".
  7. ^ "Counteracting Drug Resistance in Melanoma". 2015.
  8. ^ 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.
  9. ^ 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.
  10. ^ a b 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.
  11. ^ 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[edit]