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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kudryavtsev, Alexander N., Krasitskaya, Vasilisa V., Efremov, Maxim K., Zangeeva, Sayana V., Rogova A. V., Tomilin F. N., Frank, Ludmila A.
Заглавие : Ca2+-triggered coelenterazine-binding protein Renilla: Expected and unexpected features
Место публикации : Int. J. Mol. Sci. - 2023. - Vol. 24, Is. 3. - Ст.2144. - ISSN 16616596 (ISSN), DOI 10.3390/ijms24032144. - ISSN 14220067 (eISSN)
Примечания : 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
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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