SSAT-1 is an alias for the gene, Spermidine/spermine N1-acetyltransferase 1, in humans. Other names include: Diamine acetyltransferase 1; Putrescine acetyltransferase; Spermidine/spermine N(1)-acetyltransferase 1; SSAT; Diamine acetyltransferase 1 ; Polyamine N-acetyltransferase 1; diamine N-acetyltransferase 1; DC21; KFSDX; SAT. The encoded protein is an enzyme with an amino acid length of 171 and a mass of 20.0 kDa. Other isoforms may exist. SSAT-1 is a member of the Acetyltransferase family. This gene shares homology with other species, including: Frog, Chicken.