EC Number   |
General Information |
Reference |
|---|
    1.14.14.158 | physiological function |
alpha-carotene and beta-carotene turns into lutein and zeaxanthin, respectively, by the hydroxylation process, in the presence of epsilon-ring carotene hydroxylase and beta-ring carotene hydroxylase |
745823 |
| 1.14.14.158 | malfunction |
mis-expressing of CYP97C1 impacts carotenoids metabolic flux |
716454 |
| 1.14.14.158 | physiological function |
of the four citrus carotene hydroxylases presented in four distinct clusters, CitCYP97C is the one responsible for epsilon-ring hydroxylation in Citrus unshiu, while CitCYP97A and CitCYP97B hydroxylate the alpha- and beta-rings of alpha-carotene, respectively, roles of four carotene hydroxylase genes (CitHYb, CitCYP97A, CitCYP97B, and CitCYP97C) in regulating xanthophylls biosynthesis. Zeaxanthin increases significantly during the ripening process in Citrus fruits, contents of alpha-carotene and lutein increase gradually in the juice sacs during the ripening process, the content of beta-cryptoxanthin, the major carotenoid in Satsuma mandarin, increases significantly during the ripening process in December, overview |
744606 |
| 1.14.14.158 | malfunction |
quadruple chy1chy2lut2lut5 mutant lacks lutein and shows a compensatory increase in beta-xanthophylls with respect to the chy1chy2lut5 mutant. Chy1chy2lut2lut5 mutant plants show an even stronger photosensitivity than mutant chy1chy2lut5, a complete lack of qE, the rapidly reversible component of non-photochemical quenching, and a peculiar organization of the pigment binding complexes into thylakoids. The chy1chy2lut2lut5 mutant is depleted in Lhcb subunits and is specifically affected in Photosystem I function, showing a deficiency in PSI-LHCI supercomplexes, phenotype, overview |
727255 |
| 1.14.14.158 | metabolism |
the enzyme is involved in the biosynthetic pathway of lutein in plants, overview |
728502 |
| 1.14.14.158 | metabolism |
the enzyme is involved in the carotenoid biosynthesis pathway |
744606 |
| 1.14.14.158 | metabolism |
the enzyme is involved in the carotenoid biosynthesis pathway, for which 7 crucial genes are responsible, overview |
745823 |
| 1.14.14.158 | physiological function |
the enzyme is involved in xanthophyll biosynthesis, correlation between xanthophyll levels and the PSI-PSII ratio, xanthophylls are needed for normal level of Photosystem I and LHCII accumulation |
727255 |
| 1.14.14.158 | metabolism |
the first step in xanthophyll biosynthesis from alpha- and beta-carotene is the hydroxylation of epsilon- and beta-rings, performed by both non-heme iron oxygenases CHY1 and CHY2, and by P450 cytochromes, LUT1/CYP97C1 and LUT5/CYP97A3. CHY1, CHY2, LUT1/CYP97C1 and LUT5/CYP97A3 are the complete complement of carotene hydroxylases in Arabidopsis thaliana |
727255 |
| 1.14.14.158 | physiological function |
the overexpression of gene LeLUT1 has a key function in alleviating photoinhibition and photooxidation, and decreases the sensitivity of photosynthesis to chilling stress |
728502 |
