15-cis-phytoene + 3 A => all-trans-neurosporene + 3 AH2
15-cis-phytoene + 3 a => all-trans-neurosporene + 3 ah2
15-cis-phytoene + 3 A => all-trans-neurosporene + 3 AH2
15-cis-phytoene + 3 a => all-trans-neurosporene + 3 ah2