all-trans-zeta-carotene + A => all-trans-neurosporene + AH2
all-trans-zeta-carotene + a => all-trans-neurosporene + ah2
all-trans-zeta-carotene + A => all-trans-neurosporene + AH2
all-trans-zeta-carotene + a => all-trans-neurosporene + ah2