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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">zhps</journal-id><journal-title-group><journal-title xml:lang="ru">Журнал прикладной спектроскопии</journal-title><trans-title-group xml:lang="en"><trans-title>Zhurnal Prikladnoii Spektroskopii</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0514-7506</issn><publisher><publisher-name>B. I. Stepanov Institute of Physics of the National Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">zhps-6</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>Статьи</subject></subj-group></article-categories><title-group><article-title>АНИЗОТРОПИЯ ИСПУСКАНИЯ ФЛУОРЕСЦЕИНА, КОВАЛЕНТНО СВЯЗАННОГО С ОЛИГОНУКЛЕОТИДАМИ</article-title><trans-title-group xml:lang="en"><trans-title>EMISSION ANISOTROPY OF THE FLUORESCEIN COVALENTLY LINKED TO OLIGONUCLEOTIDES</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Блохин</surname><given-names>А. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Blokhin</surname><given-names>A. P.</given-names></name></name-alternatives><email xlink:type="simple">lsfm@imaph.bas-net.by</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Квач</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kvach</surname><given-names>M. V.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Поведайло</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Povedailo</surname><given-names>V. A.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шманай</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Shmanai</surname><given-names>V. V.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Яковлев</surname><given-names>Д. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Yakovlev</surname><given-names>D. L.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт физики им. Б. И. Степанова НАН Беларуси</institution></aff><aff xml:lang="en"><institution>B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Институт физико-органической химии НАН Беларуси</institution></aff><aff xml:lang="en"><institution>Institute of Physical Organic Chemistry, National Academy of Sciences of Belarus</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2017</year></pub-date><pub-date pub-type="epub"><day>10</day><month>03</month><year>2020</year></pub-date><volume>84</volume><issue>1</issue><fpage>26</fpage><lpage>32</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Блохин А.П., Квач М.В., Поведайло В.А., Шманай В.В., Яковлев Д.Л., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Блохин А.П., Квач М.В., Поведайло В.А., Шманай В.В., Яковлев Д.Л.</copyright-holder><copyright-holder xml:lang="en">Blokhin A.P., Kvach M.V., Povedailo V.A., Shmanai V.V., Yakovlev D.L.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://zhps.ejournal.by/jour/article/view/6">https://zhps.ejournal.by/jour/article/view/6</self-uri><abstract><p>Изучена вращательная деполяризация флуоресценции ковалентно связанных посредством линкера олигонуклеотидов и флуоресцеина. Измерена зависимость анизотропии флуоресценции двух нуклеиновых кислот от отношения температуры к вязкости в буферных растворах с различной концентрацией глицерина. Показано, что экспериментальные данные могут быть удовлетворительно объяснены в диффузионной модели вытянутого молекулярного волчка с внутренним вращением. Найдено, что коэффициент внутренней вращательной диффузии во всех случаях в 1.5-2 раза выше, чем для вращения вокруг оси олигонуклеотида.</p></abstract><trans-abstract xml:lang="en"><p>We studied the rotational depolarization of the fluorescence of molecular systems of covalently linked fluorescein and oligonucleotides. The dependence of the fluorescence anisotropy of two nucleic acids on the temperature-to-viscosity ratio was measured in buffer solutions with different glycerol concentrations. It was shown that the experimental data can be satisfactorily explained within the diffusion model of an elongated molecular top with internal rotation. It was found that the coefficient of the internal rotational diffusion in all the cases was 1.5-2 times larger than the corresponding coefficient for the rotation around the axis of the oligonucleotide. </p></trans-abstract><kwd-group xml:lang="ru"><kwd>oligonucleotide</kwd><kwd>fluorescent label</kwd><kwd>anisotropy of fluorescence</kwd><kwd>rotational depolarization</kwd><kwd>internal rotation</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">J. R. Lakowicz. Principles of Fluorescence Spectroscopy, Springer (2006)</mixed-citation><mixed-citation xml:lang="en">J. R. Lakowicz. Principles of Fluorescence Spectroscopy, Springer (2006)</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">В. А. Гайсенок, А. М. Саржевский. 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