Geranylgeranyl-Diphosphate Geranylgeranyltransferase

Geranylgeranyl Pyrophosphate Synthase; Geranylgeranyl-Pyrophosphate Synthase; Phytoene Synthetase; Prephytoene-Diphosphate Synthase; Geranylgeranyl Diphosphate Geranylgeranyltransferase; Geranylgeranyltransferase, Geranylgeranyl-Diphosphate
An enzyme that catalyzes the condensation of two molecules of GERANYLGERANYL DIPHOSPHATE to give prephytoene diphosphate. The prephytoene diphosphate molecule is a precursor for CAROTENOIDS and other tetraterpenes.