preferred_name: homospermidine synthase (spermidine-specific) activity
preferred_name_lc: homospermidine synthase (spermidine-specific) activity
label: spermidine:putrescine 4-aminobutyltransferase (propane-1,3-diamine-forming)
label_lc: spermidine:putrescine 4-aminobutyltransferase (propane-1,3-diamine-forming)