NEX1M, or Neuronal differentiation 6, is a human gene encoded by NEUROD6. It may also be known as: Neurogenic differentiation factor 6; NeuroD6; Class A basic helix-loop-helix protein 2; bHLHa2; Protein atonal homolog 2; Atoh2; MATH2; Math-2; Nex1. The encoded protein has an amino acid length of 337 and a mass of 38.7 kDa. Other isoforms may exist. Homologs of this gene exist in other organisms, including: Mouse, Rat, Frog, Chicken.