SAT1: Proteins and Enzymes

SAT1--also known as Spermidine/spermine-N1-acetyltransferase (SSAT1)--is a short-lived polyamine catabolic enzyme which catalyzes the acetylation of spermidine and spermine. SAT1 is a highly regulated enzyme which allows a fine attenuation of the intracellular concentration of polyamines. Induction of SAT1 plays an important role in polyamine homoeostasis, since the N1-acetylated polyamines can be excreted or oxidized by acetylpolyamine oxidase.