Capsanthin/capsorubin synthase (, CCS, ketoxanthophyll synthase, capsanthin-capsorubin synthase) is an enzyme with systematic name violaxanthin—capsorubin isomerase (ketone-forming). This enzyme catalyses the following chemical reaction
(1) violaxanthin capsorubin (2) antheraxanthin capsanthin
This multifunctional enzyme is induced during chromoplast differentiation in plants.
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