Neurotrophin 3 is a human gene encoded by the symbol, NTF3. It may also be known as: Neurotrophin-3; NT-3; HDNF; Nerve growth factor 2; NGF-2; NGF2. The encoded protein has an amino acid length of 257 and a mass of 29.4 kDa. Neurotrophin 3 is a member of the NGF-beta family. Homologs of this gene exist in other organisms, including: Mouse, Rat, Zebrafish, Frog, Chicken.