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1.


   
    Ligand binding and conformational states of the photoprotein obelin / E. V. Eremeeva [et al.] // FEBS Lett. - 2012. - Vol. 586, Is. 23. - P4173-4179, DOI 10.1016/j.febslet.2012.10.015. - Cited References: 24. - The work was supported by RFBR grant 12-04-00131, by the Program of the Government of Russian Federation "Measures to Attract Leading Scientists to Russian Educational Institutions" (grant 11.G34.31.058), by the Program "Molecular and Cellular Biology" of RAS. The Wageningen University Sandwich PhD-Fellowship Program supported E.V.E. . - ISSN 0014-5793
РУБ Biochemistry & Molecular Biology + Biophysics + Cell Biology
Рубрики:
RECOMBINANT OBELIN
   CRYSTAL-STRUCTURE

   LIGHT-EMISSION

   APO-AEQUORIN

   BIOLUMINESCENCE

   COELENTERAZINE

   LUMINESCENCE

   STABILITY

   ANGSTROM

   PROTEINS

Кл.слова (ненормированные):
Bioluminescence -- Coelenterazine -- Photoprotein -- Thermostability
Аннотация: Many proteins require a non-covalently bound ligand to be functional. How ligand binding affects protein conformation is often unknown. Here we address thermal unfolding of the free and ligand-bound forms of photoprotein obelin. Fluorescence and far-UV circular dichroism ( CD) data show that the various ligand-dependent conformational states of obelin differ significantly in stability against thermal unfolding. Binding of coelenterazine and calcium considerably stabilizes obelin. In solution, all obelin structures are similar, except for apo-obelin without calcium. This latter protein is an ensemble of conformational states, the populations of which alter upon increasing temperature. (C) 2012 Federation of European Biochemical Societies. Published by Elsevier B. V. All rights reserved.

Держатели документа:
[Eremeeva, Elena V.
Westphal, Adrie H.
van Mierlo, Carlo P. M.
van Berkel, Willem J. H.] Wageningen Univ, Biochem Lab, NL-6703 HA Wageningen, Netherlands
[Eremeeva, Elena V.
Vysotski, Eugene S.] Russian Acad Sci, Photobiol Lab, Inst Biophys, Siberian Branch, Krasnoyarsk 660036, Russia
[Eremeeva, Elena V.
Vysotski, Eugene S.] Siberian Fed Univ, Lab Bioluminescence Biotechnol, Inst Fundamental Biol & Biotechnol, Krasnoyarsk 660041, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Eremeeva, E.V.; Vysotski, E.S.; Westphal, A.H.; van Mierlo, CPM; van Berkel, WJH

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2.


   
    Structure based mechanism of the Ca2+ -induced release of coelenterazine from the Renilla binding protein [Text] / G. A. Stepanyuk [et al.] // Proteins. - 2009. - Vol. 74, Is. 3. - P583-593, DOI 10.1002/prot.22173. - Cited References: 26 . - ISSN 0887-3585
РУБ Biochemistry & Molecular Biology + Biophysics
Рубрики:
GREEN-FLUORESCENT PROTEIN
   CRYSTAL-STRUCTURES

   RENIFORMIS

   LUCIFERASE

   BIOLUMINESCENCE

   PURIFICATION

   ANGSTROM

   MUELLERI

Кл.слова (ненормированные):
bioluminescence -- EF-hand -- coelenteramider -- luciferase -- Ca2+-binding protein
Аннотация: The crystal structure of the Ca2+-loaded coelenterazine binding protein from Renilla muelleri in its apo-state has been determined at resolution 1.8 angstrom. Although calcium binding hardly affects the compact scaffold and overall fold of the structure before calcium addition, there are easily discerned shifts in the residues that were interacting with the coelenterazine and a repositioning of helices, to expose a cavity to the external solvent. Altogether these changes offer a straightforward explanation for how following the addition of Ca2+, the coelenterazine could escape and become available for bioluminescence on Renilla luciferase. A docking computation supports the possibility of a luciferase-binding protein complex.

Держатели документа:
[Liu, Zhi-Jie] Chinese Acad Sci, Inst Biophys, Natl Lab Biomacromol, Beijing 100101, Peoples R China
[Stepanyuk, Galina A.
Vysotski, Eugene S.
Lee, John
Rose, John P.
Wang, Bi-Cheng] Univ Georgia, Dept Biochem & Mol Biol, Athens, GA 30602 USA
[Stepanyuk, Galina A.
Vysotski, Eugene S.] Russian Acad Sci, Siberian Branch, Inst Biophys, Photobiol Lab, Krasnoyarsk 660036, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Stepanyuk, G.A.; Liu, Z.J.; Vysotski, E.S.; Lee, J...; Rose, J.P.; Wang, B.C.

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