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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">vestnik-bio-msu</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Московского университета. Серия 16. Биология</journal-title><trans-title-group xml:lang="en"><trans-title>Vestnik Moskovskogo universiteta. Seriya 16. Biologiya</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0137-0952</issn><publisher><publisher-name>Lomonosov Moscow State University,  School of Biology</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">vestnik-bio-msu-473</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>Молекулярная биология</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Molecular biology</subject></subj-group></article-categories><title-group><article-title>ИССЛЕДОВАНИЕ ЭНЕРГЕТИЧЕСКОГО ПРОФИЛЯ ПРОЦЕССА ОТВОРАЧИВАНИЯ ДНК ОТ ГИСТОНОВОГО ЯДРА НУКЛЕОСОМЫ МЕТОДАМИ МОЛЕКУЛЯРНОГО МОДЕЛИРОВАНИЯ</article-title><trans-title-group xml:lang="en"><trans-title>INVESTIGATION OF HISTONE-DNA BINDING ENERGY AS A FUNCTION OF DNA UNWRAPPING FROM NUCLEOSOME USING MOLECULAR MODELING</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>Грибкова</surname><given-names>А. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Gribkova</surname><given-names>A. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кафедра биоинженерии, биологический факультет</p><p>Россия, 119234, г. Москва, Ленинские горы, д. 1, стр. 12</p><p>студентка кафедры биоинженерии биологического факультета МГУ. Тел.: 8-495-939-57-38</p></bio><bio xml:lang="en"><p>Department of Bioengineering, School of Biology</p><p>Leninskiye gory 1–12, Moscow, 119234, Russia</p></bio><email xlink:type="simple">anna_gribkova@list.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>Армеев</surname><given-names>Г. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Armeev</surname><given-names>G. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кафедра биоинженерии, биологический факультет</p><p>Россия, 119234, г. Москва, Ленинские горы, д. 1, стр. 12</p><p>аспирант кафедры биоинженерии биологического факультета МГУ. Тел.: 8-495-939-57-38</p></bio><bio xml:lang="en"><p>Department of Bioengineering, School of Biology</p><p>Leninskiye gory 1–12, Moscow, 119234, Russia</p></bio><email xlink:type="simple">armeev@molsim.org</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>Шайтан</surname><given-names>А. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Shaytan</surname><given-names>A. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кафедра биоинженерии, биологический факультет</p><p>Россия, 119234, г. Москва, Ленинские горы, д. 1, стр. 12</p><p>канд. физ-мат. наук, вед. науч. сотр. кафедры биоинженерии биологического факультета МГУ. Тел.: 8-495-939-57-38</p></bio><bio xml:lang="en"><p>Department of Bioengineering, School of Biology</p><p>Leninskiye gory 1–12, Moscow, 119234, Russia</p></bio><email xlink:type="simple">alex@molsim.org</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Московский государственный университет имени М.В. Ломоносова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Lomonosov Moscow State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2017</year></pub-date><pub-date pub-type="epub"><day>28</day><month>07</month><year>2017</year></pub-date><volume>72</volume><issue>3</issue><fpage>164</fpage><lpage>168</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Грибкова А.К., Армеев Г.А., Шайтан А.К., 2017</copyright-statement><copyright-year>2017</copyright-year><copyright-holder xml:lang="ru">Грибкова А.К., Армеев Г.А., Шайтан А.К.</copyright-holder><copyright-holder xml:lang="en">Gribkova A.K., Armeev G.A., Shaytan A.K.</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://vestnik-bio-msu.elpub.ru/jour/article/view/473">https://vestnik-bio-msu.elpub.ru/jour/article/view/473</self-uri><abstract><p>Работа посвящена изучению компактизации ДНК на нуклеосомном уровне. Взаимодействие ДНК с гистонами влияет на протекание ключевых процессов репликации и транскрипции. Такое взаимодействие в общем случае может быть охарактеризовано величиной свободной энергии связывания. В данной работе рассчитывалось изменение свободной энергии связывания в процессе отворачивания ДНК от гистонового ядра нуклеосомы. Расчёты проводились методом MM/PBSA. Рассчитанные профили хорошо согласуются с экспериментальными данными из литературных источников. Полученные результаты свидетельствуют о применимости методики для изучения влияния посттрансляционных модификаций гистонов и гистоновых вариантов на энергетику нуклеосом, что важно для понимания механизмов регуляции транскрипции в хроматине.</p></abstract><trans-abstract xml:lang="en"><p>The present study contributes to the understanding of DNA compaction in cell nucleus at the nucleosomal level. The interactions between DNA and histones can be described in terms of a free energy profile, DNA binding affects key processes of cell life including replication and transcription. MM/PBSA method was used to calculate free energy profile during DNA unwrapping from histone octamer. Our results are in good agreement with experimental data published earlier. The developed approach can be applied to study the effects of post-translational modifications of histones and histone variants on nucleosome stability, which is important for understanding the mechanisms of transcriptional regulation in chromatin.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>нуклеосома</kwd><kwd>хроматин</kwd><kwd>молекулярная динамика</kwd><kwd>MM/PBSA</kwd><kwd>свободная энергия</kwd><kwd>ДНК</kwd><kwd>гистоны</kwd></kwd-group><kwd-group xml:lang="en"><kwd>nucleosomes</kwd><kwd>chromatin</kwd><kwd>molecular dynamics</kwd><kwd>MM/PBSA</kwd><kwd>free energy calculations</kwd><kwd>DNA</kwd><kwd>histones</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">Shaytan A.K., Landsman D., Panchenko A.R. Nucleosome adaptability conferred by sequence and structural variations in histone H2A–H2B dimers // Curr. Opin. Struct. Biol. 2015. Vol. 32. 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