Isopentenyl-diphosphate Delta-isomerase

In enzymology, an isopentenyl-diphosphate Delta-isomerase is an enzyme that catalyzes the chemical reaction


 * isopentenyl diphosphate $$\rightleftharpoons$$ dimethylallyl diphosphate

Hence, this enzyme has one substrate, isopentenyl diphosphate, and one product, dimethylallyl diphosphate.

This enzyme belongs to the family of isomerases, specifically those intramolecular oxidoreductases transposing C=C bonds. The systematic name of this enzyme class is isopentenyl-diphosphate Delta3-Delta2-isomerase. Other names in common use include isopentenylpyrophosphate Delta-isomerase, methylbutenylpyrophosphate isomerase, and isopentenylpyrophosphate isomerase. This enzyme participates in biosynthesis of steroids and terpenoid biosynthesis.

Structural studies
As of late 2007, 25 structures have been solved for this class of enzymes, with PDB accession codes, , , , , , , , , , , , , , , , , , , , , , , , and.