Lycopene epsilon-cyclase

Lycopene ε-cyclase (, CrtL-e, LCYe) is an enzyme with systematic name carotenoid psi-end group lyase (decyclizing). This enzyme catalyses the following chemical reaction



carotenoid psi-end group $$\rightleftharpoons$$ carotenoid epsilon-end group

The carotenoid lycopene has the psi-end group at both ends.