Gap1m, or RAS p21 protein activator 2, is a human gene encoded by RASA2. It may also be known as: Ras GTPase-activating protein 2; GAP1m; GTPase-activating protein 1m. The encoded protein has an amino acid length of 850 and a mass of 96.6 kDa. Other isoforms may exist. Homologs of this gene exist in other organisms, including: Mouse, Rat, Frog.