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Your query returned 2 entries. Printable version
EC | 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 |
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For diagram of C50-Carotenoid biosynthesis, click here | |||||||
Glossary: | flavuxanthin = 2,2′-bis-(4-hydroxy-3-methylbut-2-enyl)-1,16,1′,16′-tetradehydro-1,2,1′,2′-tetrahydro-ψ,ψ-carotene = (2E,8E,10E,12E,14E,16E,18E,20E,22E,24E,26E,28E,34E)-5,32-diisopropenyl-2,8,12,16,21,25,29,35-octamethylhexatriaconta-2,8,10,12,14,16,18,20,22,24,26,28,34-tridecaene-1,36-diol | ||||||
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) | ||||||
Comments: | 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). | ||||||
Links to other databases: | BRENDA, EXPASY, KEGG, MetaCyc | ||||||
References: |
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EC | 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 |
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For diagram of C50-Carotenoid biosynthesis, click here and for diagram of bacterioruberin biosynthesis, click here | |||||||
Glossary: | dihydrobisanhydrobacterioruberin = (2S,2S′)-2,2′-bis(3-methylbut-2-en-1-yl)-3,3′,4,4′-tetradehydro-1,1′,2,2′-tetrahydro-ψ,ψ-carotene-1,1′-diol = (3S,4E,6E,8E,10E,12E,14E,16E,18E,20E,22E,24E,26E,30R)-2,6,10,14,19,23,27,31-octamethyl-3,30-bis(3-methylbut-2-en-1-yl)dotriaconta-4,6,8,10,12,14,16,18,20,22,24,26-dodecaene-2,31-diol | ||||||
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) | ||||||
Comments: | 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). | ||||||
Links to other databases: | BRENDA, EXPASY, KEGG, MetaCyc | ||||||
References: |
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