15-cis-phytoene + 5 A = all-trans-3,4-didehydrolycopene + 5 AH2
15-cis-phytoene + 5 a = all-trans-3,4-didehydrolycopene + 5 ah2
"phytoene desaturase (3,4-didehydrolycopene-forming)"
"phytoene desaturase (3,4-didehydrolycopene-forming)"