User:Lisa T97/sandbox

Spermine synthase is a form of a polyamine that is in all eukaryotes and plays a role in a variety of biological functions in plants. Its structure consists of two identical monomers of 41 kDa with three domains each, creating a homodimer formed via dimerization. The interactions between one of the three domains, the N-terminals of the monomers, is responsible for dimerization as that is where the active site is located; the central terminal consisting of four β- strands, structurally forms a lid for the third domain, the C-terminal domain.