Isoprene synthase

In enzymology, an isoprene synthase (EC 4.2.3.27) is an enzyme that catalyzes the chemical reaction

dimethylallyl pyrophosphate ⇌ isoprene + diphosphate

Hence, this enzyme has one substrate, dimethylallyl pyrophosphate, and two products, isoprene and pyrophosphate.

This enzyme belongs to the family of lyases, specifically those carbon-oxygen lyases acting on phosphates. The systematic name of this enzyme class is dimethylallyl-pyrophosphate pyrophosphate-lyase (isoprene-forming). Other names in common use include ISPC, and ISPS.