all-trans-3,4-didehydrolycopene + AH2 => all-trans-lycopene + A
all-trans-3,4-didehydrolycopene + ah2 => all-trans-lycopene + a
all-trans-3,4-didehydrolycopene + AH2 => all-trans-lycopene + A
all-trans-3,4-didehydrolycopene + ah2 => all-trans-lycopene + a