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1.


   
    Violet and greenish photoprotein obelin mutants for reporter applications in dual-color assay [Text] / L. A. Frank [et al.] // Anal. Bioanal. Chem. - 2008. - Vol. 391, Is. 8. - P2891-2896, DOI 10.1007/s00216-008-2223-5. - Cited References: 22 . - ISSN 1618-2642
РУБ Biochemical Research Methods + Chemistry, Analytical
Рубрики:
ANGSTROM RESOLUTION
   RECOMBINANT OBELIN

   CRYSTAL-STRUCTURE

   BIOLUMINESCENCE

   AEQUORIN

   IMMUNOASSAY

   EXPRESSION

   CDNA

   PURIFICATION

   CLONING

Кл.слова (ненормированные):
Ca(2+)-regulated photoprotein -- bioluminescence -- dual-color assay
Аннотация: Two kinds of Ca(2+)-regulated photoprotein obelin with altered color of bioluminescence were obtained by active-center amino acid substitution. The mutant W92F-H22E emits violet light (lambda(max)=390 nm) and the mutant Y139F emits greenish light (lambda (max)=498 nm), with small spectral overlap, both display high activity and stability and thus may be used as reporters. For demonstration, the mutants were applied in dual-color simultaneous immunoassay of two gonadotropic hormones-follicle-stimulating hormone and luteinizing hormone. Bioluminescence of the reporters was simultaneously triggered by single injection of Ca(2+) solution, divided using band-pass optical filters and measured with a two-channel photometer. The sensitivity of simultaneous bioluminescence assay was close to that of a separate radioimmunoassay.

Держатели документа:
[Frank, Ludmila A.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Frank, Ludmila A.
Borisova, Vasilisa V.
Markova, Svetlana V.
Malikova, Natalia P.
Stepanyuk, Galina A.
Vysotski, Eugene S.] Russian Acad Sci, Inst Biophys, Siberian Branch, Krasnoyarsk 660036, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Frank, L.A.; Borisova, V.V.; Markova, S.V.; Malikova, N.P.; Stepanyuk, G.A.; Vysotski, E.S.

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2.


   
    The Ca2+-Regulated Photoprotein Obelin as a Tool for SELEX Monitoring and DNA Aptamer Affinity Evaluation / V. V. Krasitskaya, N. S. Goncharova, V. V. Biriukov [et al.] // Photochem. Photobiol. - 2020, DOI 10.1111/php.13274. - Cited References:25. - This work has been supported by the Russian Foundation for Basic Research (RFBR) under the grant no 18-38-00531. . - Article in press. - ISSN 0031-8655. - ISSN 1751-1097
РУБ Biochemistry & Molecular Biology + Biophysics
Рубрики:
CARDIAC TROPONIN-I
   BIOLUMINESCENCE

   IMMUNOASSAY

   APTASENSOR

   DIAGNOSIS

Аннотация: Bioluminescent solid-phase analysis was proposed to monitor the selection process and to determine binding characteristics of the aptamer-target complexes during design and development of the specific aptamers. The assay involves Ca2+-regulated photoprotein obelin as a simple, sensitive and fast reporter. Applicability and the prospects of the approach were exemplified by identification of DNA aptamers to cardiac troponin I, a highly specific early biomarker for acute myocardial infarction. Two structurally different aptamers specific to various epitopes of troponin I were obtained and then tested in a model bioluminescent assay.

WOS
Держатели документа:
Fed Res Ctr KSC SB RAS, Inst Biophys SB RAS, Krasnoyarsk, Russia.
Siberian Fed Univ, Krasnoyarsk, Russia.
Inst Chem Biol & Fundamental Med SB RAS, Novosibirsk, Russia.
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk, Russia.

Доп.точки доступа:
Krasitskaya, Vasilisa V.; Goncharova, Natalia S.; Biriukov, Vladislav V.; Bashmakova, Eugenia E.; Kabilov, Marsel R.; Baykov, Ivan K.; Sokolov, Aleksey E.; Frank, Ludmila A.; Russian Foundation for Basic Research (RFBR)Russian Foundation for Basic Research (RFBR) [18-38-00531]

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