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The effect of phenobarbital on the luminescent system of Beneckea harveyi / E. S. Vysotsky, V. V. Zavoruyev, V. V. Mezhevikin // Mikrobiologiya. - 1981. - Vol. 50, Is. 6. - С. 985-991 . - ISSN 0026-3656
Кл.слова (ненормированные):
luciferase -- phenobarbital -- animal experiment -- beneckea harveyi -- bioluminescence -- decanal -- in vitro study -- luminescence

Scopus
Держатели документа:
Inst. Fiz., SO AN SSSR, Krasnoyarsk, Russia : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Vysotsky, E.S.; Zavoruyev, V.V.; Mezhevikin, V.V.

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Comparative study of temperature effects on bacterial luciferases [Text] / N. A. Tyulkova, T. P. Sandalova // Biochem.-Moscow. - 1996. - Vol. 61, Is. 2. - P. 205-214. - Cited References: 23 . - ISSN 0006-2979

РУБ Biochemistry & Molecular Biology
Рубрики:
BIOLUMINESCENCE
Кл.слова (ненормированные):
bacterial luciferase -- temperature -- activation energy
Аннотация: Effects of temperature on bioluminescent patterns of luciferases from luminescent bacteria Vibrio harveyi, Vibrio fischeri, Photobacterium leiognathi, and Photobacterium phosphoreum were studied. The highest luminescence level was observed at 15-25 degrees C for the luciferase from P. phosphoreum, at 20-30 degrees C for the V. fischeri and P. leiognathi enzymes, and at 30-37 degrees C for the enzyme from V. harveyi. All the luciferases were significantly stabilized at increased salt concentrations, at low pH values, or in the presence of dithiothreitol (DTT) and EDTA. The addition of DTT and EDTA affected the reversible stage of enzyme inactivation, while salts reduced the rate of the irreversible stage. A peak corresponding to aggregated protein was detected by gel chromatography of irreversibly inactivated luciferase. Activation energies were calculated for each luciferase in bioluminescent reactions with decanal, dodecanal, tetradecanal, and without aldehydes. The activation energy of the reaction with tetradecanal was much lower than those with the other aldehydes. The temperature dependence of the lifetime of the long-lived reaction intermediate showed that in the 10-30 degrees C interval all the luciferases, except for the enzyme from V. harveyi, have only one active form.

WOS : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Tyulkova, N.A.; Sandalova, T.P.

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Kinetic analysis of bacterial water-organic media [Text] / I. E. Sukovataya, N. A. Tyulkova // Luminescence. - 2001. - Vol. 16: 11th International Bioluminescence and Chemiluminescence Symposium (SEP 06-10, 2000, PACIFIC GROVE, CALIFORNIA), Is. 4. - P. 271-273, DOI 10.1002/bio.649.abs. - Cited References: 10 . - ISSN 1522-7235

РУБ Biochemistry & Molecular Biology

Кл.слова (ненормированные):
bacterial luciferase -- organic solvents -- Michaelis constant
Аннотация: The interaction of luciferases from two types of luminous bacteria, Photobacterium leiognathi and Vibrio harveyi, with their substrates [the photorecovered. FMNH2 and long-chain aldehydes-decanal (C-10), dodecanal (C-12) and tetradecanal (C-14)] in water-organic media was analysed using kinetic graphical methods. Moderate concentrations of organic solvents have been demonstrated to activate the bioluminescence, while higher concentrations inhibit it. The interactions of these effectors with luciferases show different types of kinetics, which depend on concentrations of solvents, kinds of enzymes and substrates. The apparent value of the Michaelis constant, K-m for C-14 of both luciferases and for C-10 of luciferase V. harveyi is enhanced with increasing concentration of the organic solvent, but K-m for C-12 and C-10 of luciferase P. leiognathi decreases. Obviously, at the specific binding of aldehydes with luciferases in the first case, hydrophobic interactions are realized, but in second, the electrostatic interactions are realized. The series of changes in parameters of bioluminescence reaction catalysed by different luciferases is obviously determined by their structural peculiarities. Copyright (C) 2001 John Wiley & Sons, Ltd.

WOS
Держатели документа:
Russian Acad Sci, Inst Biophys, Siberian Branch, Krasnoyarsk 660036, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Sukovataya, I.E.; Tyulkova, N.A.

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