4-hydroxy-all-trans-beta-carotene + A + H2O => all-trans-beta-carotene + AH2 + O2
4-hydroxy-all-trans-beta-carotene + a + h2o => all-trans-beta-carotene + ah2 + o2
4-hydroxy-all-trans-beta-carotene + A + H2O => all-trans-beta-carotene + AH2 + O2
4-hydroxy-all-trans-beta-carotene + a + h2o => all-trans-beta-carotene + ah2 + o2