Protein Name
Ephrin type-A receptor 2
UniProt ID
Ensembl Gene ID
NCBI Gene ID
Molecular Weight
108266
Protein Length
976
Protein Domain
3D Structure
(PDB ID : 4p2k)
Target by Small Molecules
Protein-protein Interaction Database
Gene Expression
Drugs and Diseases
Enzyme Class
Catalytic Site
Catalytic Activity
ATP + L-tyrosyl-[protein] = ADP + H(+) + O-phospho-L-tyrosyl-[protein]
Localization
Cell membrane,Cell projection,Ruffle membrane,Cell projection,Lamellipodium membrane,Cell junction,Focal adhesion;
Function
Receptor tyrosine kinase which binds promiscuously membrane-bound ephrin-A family ligands residing on adjacent cells, leading to contact-dependent bidirectional signaling into neighboring cells. The signaling pathway downstream of the receptor is referred to as forward signaling while the signaling pathway downstream of the ephrin ligand is referred to as reverse signaling. Activated by the ligand ephrin-A1/EFNA1 regulates migration, integrin-mediated adhesion, proliferation and differentiation of cells. Regulates cell adhesion and differentiation through DSG1/desmoglein-1 and inhibition of the ERK1/ERK2 (MAPK3/MAPK1, respectively) signaling pathway. May also participate in UV radiation-induced apoptosis and have a ligand-independent stimulatory effect on chemotactic cell migration. During development, may function in distinctive aspects of pattern formation and subsequently in development of several fetal tissues. Involved for instance in angiogenesis, in early hindbrain development and epithelial proliferation and branching morphogenesis during mammary gland development. Engaged by the ligand ephrin-A5/EFNA5 may regulate lens fiber cells shape and interactions and be important for lens transparency development and maintenance. With ephrin-A2/EFNA2 may play a role in bone remodeling through regulation of osteoclastogenesis and osteoblastogenesis.(Microbial infection) Acts as a receptor for hepatitis C virus (HCV) in hepatocytes and facilitates its cell entry. Mediates HCV entry by promoting the formation of the CD81-CLDN1 receptor complexes that are essential for HCV entry and by enhancing membrane fusion of cells expressing HCV envelope glycoproteins.
Gene Ontology
GO:0009986; GO:0005925; GO:0005887; GO:0030027; GO:0031258; GO:0031256; GO:0043005; GO:0005886; GO:0043235; GO:0032587; GO:0070160; GO:0005524; GO:0045296; GO:0004714; GO:0005005; GO:0001618; GO:0090630; GO:0048320; GO:0007411; GO:0002043; GO:0046849; GO:0060444; GO:0046058; GO:0007155; GO:0060326; GO:0016477; GO:0048870; GO:0050830; GO:0048013; GO:0006954; GO:0008630; GO:0030216; GO:0070309; GO:0033598; GO:0007275; GO:0016525; GO:0032682; GO:1901491; GO:0051898; GO:0021915; GO:0060035; GO:0014028; GO:0001649; GO:0030316; GO:1904238; GO:1903348; GO:1903078; GO:0036342; GO:0043491; GO:0072659; GO:0045765; GO:0043535; GO:0033628; GO:0070372; GO:0010591; GO:0070848; GO:0001501; GO:0007169; GO:0001570