Alpha-2-MACROGLOBULIN is a human gene encoded by the symbol, A2M. It may also be known as: Alpha-2-M; C3 and PZP-like alpha-2-macroglobulin domain-containing protein 5; A2MD; CPAMD5; FWP007; S863-7. The encoded protein has an amino acid length of 1474 and a mass of 163.3 kDa. Alpha-2-MACROGLOBULIN is a member of the Protease inhibitor I39 (alpha-2-macroglobulin) family. Homologs of this gene exist in other organisms, including: Mouse, Rat, Frog, Chicken.