Capsanthin/capsorubin synthase

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 $$\rightleftharpoons$$ capsorubin
 * (2) antheraxanthin $$\rightleftharpoons$$ capsanthin

This multifunctional enzyme is induced during chromoplast differentiation in plants.