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EC 2.5.1.150 Details
EC number
2.5.1.150
Accepted name
lycopene elongase/hydratase (dihydrobisanhydrobacterioruberin-forming)
Reaction
(1) prenyl diphosphate + all-trans-lycopene + H2O = dihydroisopentenyldehydrorhodopin + diphosphate;;(2) prenyl diphosphate + isopentenyldehydrorhodopin + H2O = dihydrobisanhydrobacterioruberin + diphosphate
Other name(s)
lbtA (gene name), lyeJ (gene name), dimethylallyl-diphosphate:all-trans-lycopene dimethylallyltransferase (hydrating, dihydrobisanhydrobacterioruberin-forming)
Systematic name
prenyl-diphosphate:all-trans-lycopene prenyltransferase (hydrating, dihydrobisanhydrobacterioruberin-forming)
Comment
The enzyme, characterized from the bacterium Dietzia sp. CQ4 and the halophilic archaea Halobacterium salinarum and Haloarcula japonica, is bifunctional. It catalyses the elongation of the C40 carotenoid all-trans-lycopene by attaching an isoprene unit at C-2 as well as the hydroxylation of the previous end of the molecule. The enzyme acts at both ends of the substrate, and combined with the action of EC 1.3.99.37, 1-hydroxy-2-isopentenylcarotenoid 3,4-desaturase, it forms the C50 carotenoid dihydrobisanhydrobacterioruberin. cf. EC 2.5.1.149, lycopene elongase/hydratase (flavuxanthin-forming).
History
created 2018
EC Tree
2.5.1.12 created 1972, deleted 1976
2.5.1.13 created 1972, deleted 1976
2.5.1.14 created 1972, deleted 1976
2.5.1.37 created 1989, deleted 2004
2.5.1.40 created 1992, deleted 1999