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    The intrinsic fluorescence of apo-obelin and apo-aequorin and use of its quenching to characterize coelenterazine binding [Text] / E. V. Eremeeva [et al.] // FEBS Lett. - 2009. - Vol. 583, Is. 12. - P1939-1944, DOI 10.1016/j.febslet.2009.04.043. - Cited References: 28. - We thank Prof. John Lee for valuable suggestions and providing constructive criticisms. The work was supported by Wageningen University Sandwich PhD-Fellowship Program, Grants 02.512.12. 2006 and 1211.2008.4 of Ministry of Education and Science of Russian Federation, MCB Program of RAS, and by Grant No. 2 of SB RAS. . - ISSN 0014-5793
РУБ Biochemistry & Molecular Biology + Biophysics + Cell Biology
Рубрики:
CRYSTAL-STRUCTURE
   CA2+-REGULATED PHOTOPROTEINS

   VIOLET BIOLUMINESCENCE

   ANGSTROM RESOLUTION

   RECOMBINANT OBELIN

   W92F OBELIN

   CALCIUM

   REGENERATION

   APOAEQUORIN

   EXPRESSION

Кл.слова (ненормированные):
Bioluminescence -- Photoprotein -- Trp fluorescence
Аннотация: The intrinsic fluorescence of two apo-photoproteins has been characterized and its concentration-dependent quenching by coelenterazine has been for the first time applied to determine the apparent dissociation constants for coelenterazine binding with apo-aequorin (1.2 +/- 0.12 mu M) and apo-obelin (0.2 +/- 0.04 mu M). Stopped-flow measurements of fluorescence quenching showed that coelenterazine binding is a millisecond-scale process, in contrast to the formation of an active photoprotein complex taking several hours. This finding evidently shows that the rate-limiting step of active photoprotein formation is the conversion of coelenterazine into its 2-hydroperoxy derivative. (C) 2009 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.

Держатели документа:
[Eremeeva, Elena V.
Markova, Svetlana V.
Vysotski, Eugene S.] Russian Acad Sci, Inst Biophys, Photobiol Lab, Siberian Branch, Krasnoyarsk 660036, Russia
[Eremeeva, Elena V.
Westphal, Adrie H.
Visser, Antonie J. W. G.
van Berkel, Willem J. H.] Wageningen Univ, Biochem Lab, NL-6703 HA Wageningen, Netherlands
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Eremeeva, E.V.; Markova, S.V.; Westphal, A.H.; Visser, AJWG; van Berkel, WJH; Vysotski, E.S.; Wageningen University Sandwich PhD-Fellowship Program [02.512.12. 2006]; Ministry of Education and Science of Russian Federation, MCB Program of RAS [1211.2008.4]; SB RAS

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