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EC 2.5.1.149 Details
EC number
2.5.1.149
Accepted name
lycopene elongase/hydratase (flavuxanthin-forming)
Reaction
(1) prenyl diphosphate + all-trans-lycopene + acceptor + H2O = nonaflavuxanthin + reduced electron acceptor + diphosphate;;(2) prenyl diphosphate + nonaflavuxanthin + acceptor + H2O = flavuxanthin + reduced electron acceptor + diphosphate
Other name(s)
crtEb (gene name), dimethylallyl-diphosphate:all-trans-lycopene dimethylallyltransferase (hydrating, flavuxanthin-forming)
Systematic name
prenyl-diphosphate:all-trans-lycopene prenyltransferase (hydrating, flavuxanthin-forming)
Comment
The enzyme, characterized from the bacterium Corynebacterium glutamicum, 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 new isoprene unit. The enzyme acts at both ends of the substrate, forming the C50 carotenoid flavuxanthin via the C45 intermediate nonaflavuxanthin. cf. EC 2.5.1.150, lycopene elongase/hydratase (dihydrobisanhydrobacterioruberin-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