Term Name:	spermidine synthase activity
Synonyms:	aminopropyltransferase activity, putrescine aminopropyltransferase activity, S-adenosylmethioninamine:putrescine 3-aminopropyltransferase activity, SpeE, spermidine synthetase activity
Definition:	Catalysis of the reaction: S-adenosylmethioninamine + putrescine = 5'-methylthioadenosine + spermidine.
Ontology:	GO: Molecular Function [GO:0004766]    QuickGO    AmiGO