Deuterolysin is a zinc metalloproteinase, part of a novel family of zinc metalloproteinases which have an Asp residue as the third zinc binding ligand in addition to the general sequence HEXXH found in all zinc metalloproteinases. It shows a preference for basic protein substrates such as histones, and is of particular importance in the Japanese fermentation industry.
Defined by 5 residues: TYR:A-106HIS:A-128GLU:A-129HIS:A-132ASP:A-143