Enzymes
| UniProtKB help_outline | 3 proteins |
| Enzyme class help_outline |
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- Name help_outline 1,1'-dihydroxy-1,1',2,2'-tetrahydrolycopene Identifier CHEBI:63065 Charge 0 Formula C40H60O2 InChIKeyhelp_outline FOHPEEJTFCJHNI-FIKDCGPASA-N SMILEShelp_outline C\C(CCCC(C)(C)O)=C/C=C/C(C)=C/C=C/C(C)=C/C=C/C=C(C)/C=C/C=C(C)/C=C/C=C(\C)CCCC(C)(C)O 2D coordinates Mol file for the small molecule Search links Involved in 2 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline H2O Identifier CHEBI:15377 (Beilstein: 3587155; CAS: 7732-18-5) help_outline Charge 0 Formula H2O InChIKeyhelp_outline XLYOFNOQVPJJNP-UHFFFAOYSA-N SMILEShelp_outline [H]O[H] 2D coordinates Mol file for the small molecule Search links Involved in 6,204 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline rhodopin Identifier CHEBI:35331 (Beilstein: 1730253,1730252; CAS: 105-92-0) help_outline Charge 0 Formula C40H58O InChIKeyhelp_outline CNYVJTJLUKKCGM-RGGGOQHISA-N SMILEShelp_outline CC(C)=CCC\C(C)=C\C=C\C(C)=C\C=C\C(C)=C\C=C\C=C(C)\C=C\C=C(C)\C=C\C=C(/C)CCCC(C)(C)O 2D coordinates Mol file for the small molecule Search links Involved in 3 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:31611 | RHEA:31612 | RHEA:31613 | RHEA:31614 | |
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| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
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Publications
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Biochemical characterization of the carotenoid 1,2-hydratases (CrtC) from Rubrivivax gelatinosus and Thiocapsa roseopersicina.
Hiseni A., Arends I.W., Otten L.G.
Two carotenoid 1,2-hydratase (CrtC) genes from the photosynthetic bacteria Rubrivivax gelatinosus and Thiocapsa roseopersicina were cloned and expressed in Escherichia coli in an active form and purified by affinity chromatography. The biochemical properties of the recombinant enzymes and their su ... >> More
Two carotenoid 1,2-hydratase (CrtC) genes from the photosynthetic bacteria Rubrivivax gelatinosus and Thiocapsa roseopersicina were cloned and expressed in Escherichia coli in an active form and purified by affinity chromatography. The biochemical properties of the recombinant enzymes and their substrate specificities were studied. The purified CrtCs catalyze cofactor independently the conversion of lycopene to 1-HO- and 1,1'-(HO)(2)-lycopene. The optimal pH and temperature for hydratase activity was 8.0 and 30°C, respectively. The apparent K (m) and V (max) values obtained for the hydration of lycopene were 24 μM and 0.31 nmol h(-1) mg(-1) for RgCrtC and 9.5 μM and 0.15 nmol h(-1) mg(-1) for TrCrtC, respectively. Sodium dodecyl sulfate polyacrylamide gel electrophoresis analysis revealed two protein bands of 44 and 38 kDa for TrCrtC, which indicate protein processing. Both hydratases are also able to convert the unnatural substrate geranylgeraniol (C20 substrate), which functionally resembles the natural substrate lycopene. << Less
Appl. Microbiol. Biotechnol. 91:1029-1036(2011) [PubMed] [EuropePMC]
This publication is cited by 3 other entries.
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Heterologous expression, purification, and enzymatic characterization of the acyclic carotenoid 1,2-hydratase from Rubrivivax gelatinosus.
Steiger S., Mazet A., Sandmann G.
The carotenoid 1,2-hydratase CrtC from Rubrivivax gelatinosus has been expressed in Escherichia coli in an active form and purified by affinity chromatography. The enzyme catalyzes the conversion of various acyclic carotenes including 1-hydroxy derivatives. This broad substrate specificity reflect ... >> More
The carotenoid 1,2-hydratase CrtC from Rubrivivax gelatinosus has been expressed in Escherichia coli in an active form and purified by affinity chromatography. The enzyme catalyzes the conversion of various acyclic carotenes including 1-hydroxy derivatives. This broad substrate specificity reflects the participation of CrtC in 1'-HO-spheroidene and in spirilloxanthin biosynthesis. Enzyme kinetic studies including the determination of substrate specificity constants indicate that among the alternative biosynthetic routes to 1'-HO-spheroidene the one via spheroidene is the dominating pathway. In contrast to CrtC from Rvi. gelatinosus, the equivalent enzyme from Rhodobacter capsulatus, a closely related bacterium which lacks the biosynthetic branch to spirilloxanthin and accumulates spheroidene instead of substantial amounts of 1'-HO-spheroidene, is extremely poor in converting 1-HO-carotenoids. The individual catalytic properties of both carotenoid 1,2-hydratases reflect the in situ carotenogenic pathways in both purple photosynthetic bacteria. << Less
Arch. Biochem. Biophys. 414:51-58(2003) [PubMed] [EuropePMC]
This publication is cited by 3 other entries.