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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-279</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 ИОННОГО ОКРУЖЕНИЯ И ЭЛЕКТРИЧЕСКИХ ХАРАКТЕРИСТИК НУКЛЕОСОМ МЕТОДОМ МОЛЕКУЛЯРНОЙ ДИНАМИКИ</article-title><trans-title-group xml:lang="en"><trans-title>DISTRIBUTION OF IONS AND ELECTROSTATIC POTENTIAL IN NUCLEOSOMES AS STUDIED WITH MOLECULAR DYNAMICS</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>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>аспирант Тел.: 8-495-939-23-74</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>К. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Shaitan</surname><given-names>K. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>докт. физ.-мат. наук, проф. Тел.: 8-495-939-23-74</p></bio><email xlink:type="simple">shaytan49@yandex.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>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>канд. физ.-мат. наук, ст. науч. сотр. Тел.: 8-495-939-57-38</p></bio><email xlink:type="simple">alex@molsim.org</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff xml:lang="ru" id="aff-1"><institution>кафедра биоинженерии биологического факультета МГУ</institution><country>Russian Federation</country></aff><pub-date pub-type="collection"><year>2015</year></pub-date><pub-date pub-type="epub"><day>28</day><month>11</month><year>2015</year></pub-date><volume>0</volume><issue>4</issue><fpage>24</fpage><lpage>28</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Армеев Г.А., Шайтан К.В., Шайтан А.К., 2015</copyright-statement><copyright-year>2015</copyright-year><copyright-holder xml:lang="ru">Армеев Г.А., Шайтан К.В., Шайтан А.К.</copyright-holder><copyright-holder xml:lang="en">Armeev G.A., Shaitan K.V., 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/279">https://vestnik-bio-msu.elpub.ru/jour/article/view/279</self-uri><abstract><p>Работа посвящена изучению принципов устройства и формирования нуклеосом с помощью молекулярного моделирования. Формирование белками, гистонами и участками молекулы ДНК компактных образований — нуклеосом способствует не только упаковке молекулы ДНК в ядре клетки, но и играет важную роль в регуляции процессов транскрипции и экспрессии генов. Сборка и работа нуклеосом сильно зависит от ионного окружения и электрических характеристик среды. В работе исследуются карты распределения одновалентных ионов в системе, выявляются места их предпочтительного нахождения. Предлагается метод, позволяющий вычислять распределения физических величин в объеме расчетной ячейки вокруг дрейфующей макромолекулы. Рассматривается распределение электростатического потенциала вокруг нуклеосомы.</p></abstract><trans-abstract xml:lang="en"><p>The principles of nucleosome organization and formation were studied using molecular modeling approach. Nucleosomes are compact protein–DNA complexes that plays the key role in DNA compactization and regulation of gene transcription and expression. Nucleosome assembly and operation strongly depends on the ionic environment and electrical characteristics of the medium. The distribution of monovalent ions in the system was determined. The preferred locations of the ions wereidentified. The distribution of electrostatic potential around nucleosome was investigated using a new method for averaging the distribution around macromolecule drifting in the volume of the computational cell.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>нуклеосома</kwd><kwd>хроматин</kwd><kwd>молекулярная динамика</kwd><kwd>эпигенетика</kwd></kwd-group><kwd-group xml:lang="en"><kwd>nucleosomes</kwd><kwd>chromatin</kwd><kwd>molecular dynamics</kwd><kwd>epigenetics</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">Davey C.A., Sargent D.F., Luger K., Maeder A.W., Richmond T.J. 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