Main Reaction: Geranylgeranyl pyrophosphate >> beta-Carotene

Reference: PubMed ID: 10945263
Authors: Hirai N, Yoshida R, Todoroki Y, Ohigashi H
Title: Biosynthesis of abscisic acid by the non-mevalonate pathway in plants, and by the mevalonate pathway in fungi.
Published: 2000 Jul

Geranylgeranyl pyrophosphate --> beta-Carotene