ID   2.5.1.150
DE   lycopene elongase/hydratase (dihydrobisanhydrobacterioruberin-forming).
CA   (1) all-trans-lycopene + dimethylallyl diphosphate + H2O =
CA   dihydroisopentenyldehydrorhodopin + diphosphate.
CA   (2) dimethylallyl diphosphate + H2O + isopentenyldehydrorhodopin =
CA   dihydrobisanhydrobacterioruberin + diphosphate.
CC   -!- The enzyme, characterized from the bacterium Dietzia sp. CQ4 and the
CC       halophilic archaea Halobacterium salinarum and Haloarcula japonica,
CC       is bifunctional.
CC   -!- It catalyzes the elongation of the C40 carotenoid all-trans-lycopene
CC       by attaching an isoprene unit at C-2 as well as the hydroxylation of
CC       the previous end of the molecule.
CC   -!- The enzyme acts at both ends of the substrate, and combined with the
CC       action of EC 1.3.99.37, it forms the C50 carotenoid
CC       dihydrobisanhydrobacterioruberin. cf. EC 2.5.1.149.
DR   A1XI30, LBTBC_DIESC;  M0L7V9, LYEL_HALJT ;  Q9HPD9, LYEL_HALSA ;
DR   D4GTV9, LYEL_HALVD ;
//