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Rabbit Anti-Eph receptor A1 antibody
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 2 groups based on the similarity of their extracellular domain sequences and their affinities for binding ephrin-A and ephrin-B ligands. This gene is expressed in some human cancer cell lines and has been implicated in carcinogenesis. [provided by RefSeq, Jul 2008].
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. Binds with a low affinity EFNA3 and EFNA4 and with a high affinity to EFNA1 which most probably constitutes its cognate/functional ligand. Upon activation by EFNA1 induces cell attachment to the extracellular matrix inhibiting cell spreading and motility through regulation of ILK and downstream RHOA and RAC. Plays also a role in angiogenesis and regulates cell proliferation. May play a role in apoptosis.
Subunit:
Homodimer. Forms a signaling complex with LCK; PTK2B/PYK2 and PI3-kinase upon activation by EFNA1; regulates T-lymphocytes migration. Interacts (via SAM domain) with ILK (via ANK repeats); stimulated by EFNA1 but independent of the kinase activity of EPHA1. Interacts (kinase activity-dependent) with PTK2/FAK1.
Subcellular Location:
Cell membrane; Single-pass type I membrane protein.
Tissue Specificity:
Overexpressed in several carcinomas.
Post-translational modifications:
Phosphorylated. Autophosphorylation is stimulated by its ligand EFNA1.
Similarity:
Belongs to the protein kinase superfamily. Tyr protein kinase family. Ephrin receptor subfamily.
Contains 1 Eph LBD (Eph ligand-binding) domain.
Contains 2 fibronectin type-III domains.
Contains 1 protein kinase domain.
Contains 1 SAM (sterile alpha motif) domain.
SWISS:
P21709
Gene ID:
2041
Database links:
Entrez Gene: 2041 Human
Entrez Gene: 13835 Mouse
Omim: 179610 Human
SwissProt: P21709 Human
SwissProt: Q60750 Mouse
Unigene: 89839 Human
Unigene: 133330 Mouse
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