Tags: Enzyme.
In enzymology a 4-hydroxy-3-methylbut-2-en-1-yl diphosphate synthase (EC 1.17.7.1) is an enzyme that catalyzes the chemical reaction(E)-4-hydroxy-3-methylbut-2-en-1-yl diphosphate + H2O + protein-disulfide 2-C-methyl-D-erythritol 24-cyclodiphosphate + protein-dithiolThe 3 substrates of this enzyme are (E)-4-hydroxy-3-methylbut-2-en-1-yl diphosphate (HMB-PP) water and protein disulfide whereas its two products are 2-C-methyl-D-erythritol 24-cyclodiphosphate and protein dithiol.This enzyme belongs to the family of oxidoreductases specifically those acting on CH or CH2 groups with a disulfide as acceptor.