Enzymes
UniProtKB help_outline | 1 proteins |
Enzyme class help_outline |
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GO Molecular Function help_outline |
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- Name help_outline coelenterazine Identifier CHEBI:2311 (Beilstein: 902535; CAS: 55779-48-1) help_outline Charge 0 Formula C26H21N3O3 InChIKeyhelp_outline YHIPILPTUVMWQT-UHFFFAOYSA-N SMILEShelp_outline Oc1ccc(Cc2nc3c(Cc4ccccc4)[nH]c(cn3c2=O)-c2ccc(O)cc2)cc1 2D coordinates Mol file for the small molecule Search links Involved in 4 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline O2 Identifier CHEBI:15379 (CAS: 7782-44-7) help_outline Charge 0 Formula O2 InChIKeyhelp_outline MYMOFIZGZYHOMD-UHFFFAOYSA-N SMILEShelp_outline O=O 2D coordinates Mol file for the small molecule Search links Involved in 2,648 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline CO2 Identifier CHEBI:16526 (Beilstein: 1900390; CAS: 124-38-9) help_outline Charge 0 Formula CO2 InChIKeyhelp_outline CURLTUGMZLYLDI-UHFFFAOYSA-N SMILEShelp_outline O=C=O 2D coordinates Mol file for the small molecule Search links Involved in 980 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline coelenteramide Identifier CHEBI:41487 (Beilstein: 768363; CAS: 50611-86-4) help_outline Charge 0 Formula C25H21N3O3 InChIKeyhelp_outline CJIIERPDFZUYPI-UHFFFAOYSA-N SMILEShelp_outline Oc1ccc(CC(=O)Nc2ncc(nc2Cc2ccccc2)-c2ccc(O)cc2)cc1 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
- Name help_outline hν Identifier CHEBI:30212 Charge 0 Formula SMILEShelp_outline * 2D coordinates Mol file for the small molecule Search links Involved in 25 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
RHEA:20417 | RHEA:20418 | RHEA:20419 | RHEA:20420 | |
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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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Overexpression, purification and characterization of the catalytic component of Oplophorus luciferase in the deep-sea shrimp, Oplophorus gracilirostris.
Inouye S., Sasaki S.
The luciferase secreted by the deep-sea shrimp Oplophorus consists of 19 and 35kDa proteins. The 19-kDa protein (19kOLase), the catalytic component of luminescence reaction, was expressed in Escherichia coli using the cold-shock inducted expression system. 19kOLase, expressed as inclusion bodies, ... >> More
The luciferase secreted by the deep-sea shrimp Oplophorus consists of 19 and 35kDa proteins. The 19-kDa protein (19kOLase), the catalytic component of luminescence reaction, was expressed in Escherichia coli using the cold-shock inducted expression system. 19kOLase, expressed as inclusion bodies, was solubilized with 6M urea and purified by urea-nickel chelate affinity chromatography. The yield of 19kOLase was 16 mg from 400 ml of cultured cells. 19kOLase in 6M urea could be refolded rapidly by dilution with 50mM Tris-HCl (pH 7.8)-10mM EDTA, and the refolded protein showed luminescence activity. The luminescence properties of refolded 19kOLase were characterized, in comparison with native Oplophorus luciferase. Luminescence intensity with bisdeoxycoelenterazine as a substrate was stimulated in the presence of organic solvents. The 19kOLase is a thermolabile protein and is 98 % inhibited by 1muM Cu2+. The cysteine residue of 19kOLase is not essential for catalysis of the luminescence reaction. << Less
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Secretional luciferase of the luminous shrimp Oplophorus gracilirostris: cDNA cloning of a novel imidazopyrazinone luciferase(1).
Inouye S., Watanabe K., Nakamura H., Shimomura O.
The deep-sea shrimp Oplophorus gracilirostris secretes a luciferase that catalyzes the oxidation of coelenterazine to emit blue light. The luciferase (M(r) approx. 106000) was found to be a complex composed of 35 kDa and 19 kDa proteins, and the cDNAs encoding these two proteins were cloned. The e ... >> More
The deep-sea shrimp Oplophorus gracilirostris secretes a luciferase that catalyzes the oxidation of coelenterazine to emit blue light. The luciferase (M(r) approx. 106000) was found to be a complex composed of 35 kDa and 19 kDa proteins, and the cDNAs encoding these two proteins were cloned. The expression of the cDNAs in bacterial and mammalian cells indicated that the 19 kDa protein, not the 35 kDa protein, is capable of catalyzing the luminescent oxidation of coelenterazine. The primary sequence of the 35 kDa protein revealed a typical leucine-rich repeat sequence, whereas the catalytic 19 kDa protein shared no homology with any known luciferases including various imidazopyrazinone luciferases. << Less
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Properties and reaction mechanism of the bioluminescence system of the deep-sea shrimp Oplophorus gracilorostris.
Shimomura O., Masugi T., Johnson F.H., Haneda Y.
The bioluminescent reaction of Oplophorus takes place when the oxidation of coelenterazine (the luciferin) with molecular oxygen is catalyzed by Oplophorus luciferase, resulting in light of maximum intensity at 462 nm and the products CO2 and coelenteramide. Oplophorus luciferase has now been obta ... >> More
The bioluminescent reaction of Oplophorus takes place when the oxidation of coelenterazine (the luciferin) with molecular oxygen is catalyzed by Oplophorus luciferase, resulting in light of maximum intensity at 462 nm and the products CO2 and coelenteramide. Oplophorus luciferase has now been obtained in a highly purified state. Optimum luminescence occurs at pH 9 in the presence of 0.05--0.1 M NaCl at 40 degrees C, and, due to the unusual resistance of this enzyme to heat, visible luminescence occurs at temperatures above 70 degrees C when partially purified enzyme is used. The specific activity of purest preparations is 1.75 X 10(15) photons s-1 mg-1 at 23 degrees C. At pH 8.7, native luciferase has a molecular weight of approximately 130 000, apparently comprising 4 monomers of 31 000; at lower pHs, the native luciferase tends to polymerize. The quantum yield of coelenterazine is 0.34 at 22 degrees C with this enzyme. After the luminescent reaction, the spent solution is nonfluorescent, and likewise solutions of luciferase alone. When the bioluminescent reaction was carried out in the presence of 18O2, the product CO2 contained more than 50% C18O16O, supporting the dioxetane mechanism, but without ruling out the linear peroxide mechanism. << Less