Compound as reactive (2)
prephytoene diphosphate → 15-cis-phytoene + diphosphate
prephytoene diphosphate + NADPH + H+ → lycopaoctaene + NADP+ + diphosphate
Compound as product (1)
2 geranylgeranyl diphosphate → prephytoene diphosphate + diphosphate
Reversible reaction (1)
prephytoene diphosphate ↔ all-trans-phytoene + diphosphate