Thimet oligopeptidase 1 is a human gene encoded by the symbol, THOP1. It may also be known as: Thimet oligopeptidase; MP78; Endopeptidase 24.15; Thimet oligopeptidase ; EP24.15; MEPD_HUMAN. The encoded protein is an enzyme with an amino acid length of 689 and a mass of 78.8 kDa. Other isoforms may exist. Thimet oligopeptidase 1 is a member of the Peptidase M3 family. Homologs of this gene exist in other organisms, including: Mouse, Rat, Zebrafish, Frog, Chicken.