GAP43 encodes the human gene, Growth associated protein 43. It may also be known as: Neuromodulin; Axonal membrane protein GAP-43; Growth-associated protein 43; Neural phosphoprotein B-50; pp46; neuron growth-associated protein 43; nerve growth-related peptide GAP43; protein F1; calmodulin-binding protein P-57; B-50. The encoded protein has an amino acid length of 238 and a mass of 24.8 kDa. Other isoforms may exist. GAP43 is a member of the Neuromodulin family. Homologs of this gene exist in other organisms, including: Mouse, Fly, Rat, Zebrafish, Frog, Chicken.