Tags: Enzyme.
Beta-carotene 3-hydroxylase (EC 1.14.13.129 beta-carotene 33′-monooxygenase CrtZ) is an enzyme with system name beta-caroteneNADH:oxygen 3-oxidoreductase . This enzyme catalyses the following chemical reaction beta-carotene + 2 NADH + 2 H+ + 2 O2 zeaxanthin + 2 NAD+ + 2 H2O (overall reaction)(1a) beta-carotene + NADH + H+ + O2 beta-cryptoxanthin + NAD+ + H2O(1b) beta-cryptoxanthin + NADH + H+ + O2 zeaxanthin + NAD+ + H2OBeta-carotene 3-hydroxylase requires ferredoxin and Fe(II).