GANP, or Minichromosome maintenance complex component 3 associated protein, is a human gene encoded by MCM3AP. It may also be known as: Germinal-center associated nuclear protein; 80 kDa MCM3-associated protein; MCM3 acetylating protein; MCM3 acetyltransferase; germinal-centre associated nuclear protein; MAP80; SAC3. The encoded protein is an enzyme with an amino acid length of 1980 and a mass of 218.4 kDa. Other isoforms may exist. GANP is a member of the SAC3 family. Homologs of this gene exist in other organisms, including: Mouse.