An enzyme that catalyzes the transfer of the propylamine moiety from 5'-deoxy-5'-S-(3-methylthiopropylamine)sulfonium adenosine to putrescine in the biosynthesis of spermidine. The enzyme has a molecular weight of approximately 73,000 kDa and is composed of two subunits of equal size.
Also Known As:
Putrescine Aminopropyltransferase; Aminopropyltransferase, Putrescine; Synthase, Spermidine; Synthetase, Spermidine; Transferase, Propylamine; Aminopropyltransferase; Propylamine Transferase; Spermidine Synthetase; S-Adenosylmethioninamine:putrescine 3-aminopropyltransferase