Protein
Beta-carotene hydroxylase 2, chloroplastic
Function
Nonheme diiron monooxygenase involved in the biosynthesis of xanthophylls. Specific for beta-ring hydroxylations of beta-carotene. Produces beta-cryptoxanthin and zeaxanthin. Uses ferredoxin as an electron donor.
Similarity
Belongs to the sterol desaturase family.
Sequence
TTGRYHYQLVWCQISFSSTSRTSYYRHSPFLGPKPTPTTPSVYPITPFSPNLGSILRCRRRPSFTVCFVLEDDKFKTQFEAGEEDIEMKIEEQISATRLAEKLARKKSERFTYLVAAVMSSFGITSMAVMAVYYRFYWQMEGGEVPFSEMFGTFALSVGAAVGMEFWARWAHKALWHASLWHMHESHHKPREGPFELNDVFAIINAVPAIALLDYGFFHKGLIPGLCFGAGLGITVFGMAYMFVHDGLVHKRFPVGPVANVPYLRKVAAAHSLHHSEKFNGVPYGLFLGPKELEEVGGLEELEKEVNRRTRYIKGS