MCH1 is an alias for the gene, CAP, adenylate cyclase-associated protein 1 (yeast), in humans. Other names include: Adenylyl cyclase-associated protein 1; CAP 1; CAP1-PEN. The encoded protein has an amino acid length of 475 and a mass of 51.9 kDa. Other isoforms may exist. MCH1 is a member of the CAP family. This gene shares homology with other species, including: Frog.