spermidine + A => 1-pyrroline + propane-1,3-diamine + AH2
spermidine + a => 1-pyrroline + propane-1,3-diamine + ah2
spermidine + A => 1-pyrroline + propane-1,3-diamine + AH2
spermidine + a => 1-pyrroline + propane-1,3-diamine + ah2