Lycopene beta-cyclase

Lycopene β-cyclase (, CrtL, CrtL-b, CrtY) is an enzyme with systematic name carotenoid beta-end group lyase (decyclizing). This enzyme catalyses the following chemical reaction


 * carotenoid ψ-end group $$\rightleftharpoons$$ carotenoid β-end group

This enzyme requires NAD(P)H. It converts Lycopene (2 ψ ends) into β-carotene (2 β ends).