ID   1.5.99.6
DE   spermidine dehydrogenase.
CA   spermidine + A + H2O = 4-aminobutanal + propane-1,3-diamine + AH2.
CC   -!- Ferricyanide, 2,6-dichloroindophenol and cytochrome c can act as
CC       acceptor.
CC   -!- 4-aminobutanal condenses non-enzymically to 1-pyrroline.
//