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