Carotenoid 1,2-hydratase (EC 4.2.1.131, CrtC) is an enzyme with systematic name lycopene hydro-lyase (1-hydroxy-1,2-dihydrolycopene-forming). This enzyme catalyses the following chemical reaction(1) 1-hydroxy-1,2-dihydrolycopene lycopene + H2O (2) 1,1'-dihydroxy-1,1',2,2'-tetrahydrolycopene 1-hydroxy-1,2-dihydrolycopene + H2O