Growth Associated Protein 43 (GAP43)

Growth-associated protein 43, GAP-43 is a nervous tissue specific protein which is highly expressed in neurons during development and nerve regeneration. It has been implicated in neurite outgrowth, long-term potentiation, signal transduction, and neurotransmitter release. It is also a substrate of PROTEIN KINASE C. Group of developmentally regulated polypeptides thought to be critical for the formation of neural circuitry. The acidic membrane phosphoprotein GAP 43 is synthesised and transported down regenerating and developing axons, pp46 localised in growth cone membranes during embryogenesis, B 50 in mature presynaptic membranes in the regulation of phosphotidylinositol turnover and F1 in the hippocampus during long-term potentiation, are now all known to be the same protein.