Term Name:	homospermidine synthase (spermidine-specific) activity
Synonyms:	spermidine:putrescine 4-aminobutyltransferase (propane-1,3-diamine-forming)
Definition:	Catalysis of the reaction: spermidine + putrescine = sym-homospermidine + propane-1,3-diamine.
Ontology:	GO: Molecular Function [GO:0050514]    QuickGO    AmiGO