Homospermidine synthase (HSS) catalyses the synthesis of the polyamine homospermidine from 2 mol putrescine in an NAD+-dependent reaction.
Homospermidine synthase (HSS) is responsible for generating the polyamine homospermidine from 2 moles of putrescine via an NAD+-dependent reaction, which shares similarities with other biochemical processes involving nucleotide cofactors.