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Ca2+-triggered coelenterazine-binding protein Renilla: Expected and unexpected features / A. N. Kudryavtsev, V. V. Krasitskaya, M. K. Efremov [et al.] // Int. J. Mol. Sci. - 2023. - Vol. 24, Is. 3. - Ст. 2144, DOI 10.3390/ijms24032144. - Cited References: 24. - This research was supported by the state budget allocated to the fundamental research at the Russian Academy of Sciences, project No. 0287-2022-0002 and the Interagency Supercomputer Center of the Russian Academy of Sciences, MVS-100K and MVS-10P . - ISSN 1661-6596. - ISSN 1422-0067
Кл.слова (ненормированные):
Ca2+-triggered coelenterazine-binding protein -- coelenterazine -- furimazine -- luciferase NanoLuc -- B3LYP -- TDDFT -- fragmented molecular orbitals method -- DFTB3
Аннотация: Ca2+-triggered coelenterazine-binding protein (CBP) is a natural form of the luciferase substrate involved in the Renilla bioluminescence reaction. It is a stable complex of coelenterazine and apoprotein that, unlike coelenterazine, is soluble and stable in an aquatic environment and yields a significantly higher bioluminescent signal. This makes CBP a convenient substrate for luciferase-based in vitro assay. In search of a similar substrate form for the luciferase NanoLuc, a furimazine-apoCBP complex was prepared and verified against furimazine, coelenterazine, and CBP. Furimazine-apoCBP is relatively stable in solution and in a frozen or lyophilized state, but as distinct from CBP, its bioluminescence reaction with NanoLuc is independent of Ca2+. NanoLuc turned out to utilize all the four substrates under consideration. The pairs of CBP-NanoLuc and coelenterazine-NanoLuc generate bioluminescence with close efficiency. As for furimazine-apoCBP-NanoLuc pair, the efficiency with which it generates bioluminescence is almost twice lower than that of the furimazine-NanoLuc. The integral signal of the CBP-NanoLuc pair is only 22% lower than that of furimazine-NanoLuc. Thus, along with furimazine as the most effective NanoLuc substrate, CBP can also be recommended as a substrate for in vitro analytical application in view of its water solubility, stability, and Ca2+-triggering “character”.

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Держатели документа:
Institute of Biophysics, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 660036 Krasnoyarsk, Russia
School of Fundamental Biology and Biotechnology, School of Non-Ferrous Metals and Material Science, Siberian Federal University, pr. Svobodny 79, 660041 Krasnoyarsk, Russia
Kirensky Institute of Physics, Federal Research Center “Krasnoyarsk Science Center SB”, 660036 Krasnoyarsk, Russia

Доп.точки доступа:
Kudryavtsev, Alexander N.; Krasitskaya, Vasilisa V.; Efremov, Maxim K.; Zangeeva, Sayana V.; Rogova, A. V.; Рогова, Анастасия Владимировна; Tomilin, F. N.; Томилин, Феликс Николаевич; Frank, Ludmila A.
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