Tags: Enzyme.
Homospermidine synthase (EC 2.5.1.44) is an enzyme with system name putrescine:putrescine 4-aminobutyltransferase (ammonia-forming). This enzyme catalyses the following chemical reaction (1) 2 putrescine sym-homospermidine + NH3 + H+ (2) putrescine + spermidine sym-homospermidine + propane-13-diamineThe reaction of this enzyme occurs in three steps.