Species	Reference gene ID	Possible function	Papers / DOI
Arabidopsis	At4g15110	Heme-containing cytochrome P450 probably involved in the biosynthesis of xanthophylls.	Over-expression of Arabidopsis thaliana carotenoid hydroxylases individually and in combination with a beta-carotene ketolase provides insight into in vivo functions.; 2010; DOI: 10.1016/j.phytochem.2009.10.011; PMID: 19939422; https://pubmed.ncbi.nlm.nih.gov/19939422/
Arabidopsis	At1g31800	Heme-containing cytochrome P450 involved in the biosynthesis of xanthophylls.	Defining the primary route for lutein synthesis in plants: the role of Arabidopsis carotenoid beta-ring hydroxylase CYP97A3.; 2006; DOI: 10.1073/pnas.0511207103; PMID: 16492736; https://pubmed.ncbi.nlm.nih.gov/16492736/ | Elucidation of the beta-carotene hydroxylation pathway in Arabidopsis thaliana.; 2006; DOI: 10.1016/j.febslet.2006.07.055; PMID: 16890225; https://pubmed.ncbi.nlm.nih.gov/16890225/ | The evolution and function of carotenoid hydroxylases in Arabidopsis.; 2009; DOI: 10.1093/pcp/pcp005; PMID: 19147649; https://pubmed.ncbi.nlm.nih.gov/19147649/
Arabidopsis	At3g53130	Heme-containing cytochrome P450 involved in the biosynthesis of xanthophylls.	Functional analysis of beta- and epsilon-ring carotenoid hydroxylases in Arabidopsis.; 2003; DOI: 10.1105/tpc.011403; PMID: 12782726; https://pubmed.ncbi.nlm.nih.gov/12782726/ | Elucidation of the beta-carotene hydroxylation pathway in Arabidopsis thaliana.; 2006; DOI: 10.1016/j.febslet.2006.07.055; PMID: 16890225; https://pubmed.ncbi.nlm.nih.gov/16890225/ | The evolution and function of carotenoid hydroxylases in Arabidopsis.; 2009; DOI: 10.1093/pcp/pcp005; PMID: 19147649; https://pubmed.ncbi.nlm.nih.gov/19147649/ | Over-expression of Arabidopsis thaliana carotenoid hydroxylases individually and in combination with a beta-carotene ketolase provides insight into in vivo functions.; 2010; DOI: 10.1016/j.phytochem.2009.10.011; PMID: 19939422; https://pubmed.ncbi.nlm.nih.gov/19939422/ | A quadruple mutant of Arabidopsis reveals a β-carotene hydroxylation activity for LUT1/CYP97C1 and a regulatory role of xanthophylls on determination of the PSI/PSII ratio.; 2012; DOI: 10.1186/1471-2229-12-50; PMID: 22513258; https://pubmed.ncbi.nlm.nih.gov/22513258/