Purity: > 90% by SDS - PAGE Format: Liquid. In Phosphate Buffered Saline (pH 7.4) containing 10% glycerol. Ephrin-A3, also known as EFNA3, is a member of the ephrin family. The ephrins and EPH-related receptors comprise the largest subfamily of receptor protein-tyrosine kinases and have been implicated in mediating developmental events, especially in the nervous system and in erythropoiesis. This protein activates EphA4 on hippocampal neurons to regulate dendritic spine morphology and long term potentiation. The same interaction induces reverse signaling through it to regulate glutamate uptake by the astrocyte and the availability of glutamate in the synapse. Astrocyte-expressed Ephrin-3 also interacts with EphA7 to inhibit the proliferation of neural progenitor cells. Recombinant human Ephrin-A3, fused to hIgG-His-tag at C-terminus, was expressed in insect cell and purified by using conventional chromatography techniques.