InterPro domain: IPR037163

This entry represents the N-terminal tetramerization domain superfamily of spermidine synthase [ 1 ]. Spermidine synthase is involved in the first step of the spermidine biosynthesis subpathway that synthesizes spermidine from putrescine.

1. The crystal structure of spermidine synthase with a multisubstrate adduct inhibitor. Nat. Struct. Biol. 9, 27-31