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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-324</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>Методы</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Methods</subject></subj-group></article-categories><title-group><article-title>ФУТПРИНТИНГ ФЛУОРЕСЦЕНТНО-МЕЧЕНОЙ ДНК С ИСПОЛЬЗОВАНИЕМ ГИДРОКСИЛЬНЫХ РАДИКАЛОВ</article-title><trans-title-group xml:lang="en"><trans-title>HYDROXYL RADICAL FOOTPRINTING OF FLUORESCENT-LABELED DNA</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>Герасимова</surname><given-names>Н. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Gerasimova</surname><given-names>N. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>мл. науч. сотр. кафедры биоинженерии биологического факультета МГУ. Тел.: 8-495-938-22-91</p></bio><email xlink:type="simple">gerasimova@mail.bio.msu.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>Студитский</surname><given-names>В. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Studitsky</surname><given-names>V. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>докт. биол. наук, гл. науч. сотр. кафедры биоинженерии биологического факультета МГУ; руководитель лаборатории эпигенетики рака Центра исследований рака Фокс Чейз (Филадельфия, США). Тел.: 8-495-938-22-91</p></bio><email xlink:type="simple">vasily.studitsky@fccc.edu</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Кафедра биоинженерии, биологический факультет, Московский государственный университет имени М.В. Ломоносова; Россия, 119234, г. Москва, Ленинские горы, д. 1, стр. 12<country>Россия</country></aff><aff xml:lang="en">Department of Bioengineering, School of Biology, Lomonosov Moscow State University, Leninskiye gory 1–12, Moscow, 119234, Russia<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru">Кафедра биоинженерии, биологический факультет, Московский государственный университет имени М.В. Ломоносова; Россия, 119234, г. Москва, Ленинские горы, д. 1, стр. 12&#13;
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лаборатория эпигенетики рака, Центр исследований рака Фокс Чейз; США, штат Пенсильвания, 19111, г. Филадельфия, просп. Коттмана, д. 333<country>Россия</country></aff><aff xml:lang="en">Department of Bioengineering, School of Biology, Lomonosov Moscow State University, Leninskiye gory 1–12, Moscow, 119234, Russia&#13;
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Cancer Epigenetics Program Team, Fox Chase Cancer Center, Cottman Avenue 333, Philadelphia, PA 19111, USA<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2016</year></pub-date><pub-date pub-type="epub"><day>23</day><month>05</month><year>2016</year></pub-date><volume>0</volume><issue>2</issue><fpage>32</fpage><lpage>36</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Герасимова Н.С., Студитский В.М., 2016</copyright-statement><copyright-year>2016</copyright-year><copyright-holder xml:lang="ru">Герасимова Н.С., Студитский В.М.</copyright-holder><copyright-holder xml:lang="en">Gerasimova N.S., Studitsky V.M.</copyright-holder><license 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/324">https://vestnik-bio-msu.elpub.ru/jour/article/view/324</self-uri><abstract><p>Футпринтинг является одним из наиболее простых и точных методов исследования укладки и взаимодействия биополимеров. Он основан на том, что места внутри- и межмолекулярных контактов оказываются недоступными для внешнего разрушающего воздействия. При проведении эксперимента на один из концов полимера вносится метка, затем проба инкубируется с повреждающим реактивом. По распределению длины продуктов расщепления делаются выводы о доступности его участков в тех или иных условиях. При футпринтинге ДНК применяются различные ферментативные и химические разрезающие агенты. На сегодняшний день наиболее высокое временное и пространственное разрешение без выраженной специфичности по отношению к последовательности нуклеотидов можно получить при использовании гидроксильных радикалов. В работе предлагается новый вариант этого экспериментального подхода с применением флуоресцентного мечения исследуемой ДНК и современных методов последующего количественного анализа, который позволит заметно расширить его возможности.</p></abstract><trans-abstract xml:lang="en"><p>Footprinting is one of the simplest and most accurate approaches to investigate structure and interaction of biopolymers. It is based on the accessibility of intra- and intermolecular contacts for external damaging agents. In the method, one end of the polymer is labeled, and then the sample is incubated in cutting medium. Length distribution of the products allows to reveal the accessibility of different regions of polymer in the corresponding conditions. In DNA footprinting various enzymes and chemical reagents can be used. The highest temporal and spatial resolution without sequence specificity can be obtained with hydroxyl radicals. In this paper we present a new modification of the experimental approach using fluorescent-labeled DNA fragments and up-to-date methods of quantitative analysis, which can considerably increase its applicability.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>ДНК</kwd><kwd>футпринтинг</kwd><kwd>гидроксильные радикалы</kwd><kwd>нуклеосома</kwd><kwd>флуоресцентное мечение</kwd><kwd>ДНК-белковые взаимодействия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>DNA</kwd><kwd>footprinting</kwd><kwd>hydroxyl radicals</kwd><kwd>nucleosome</kwd><kwd>fluorescencent labeling</kwd><kwd>DNAprotein interactions</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">Sclavi B. Time-resolved footprinting for the study of the structural dynamics of DNA-protein interactions // Biochem. Soc. Trans. 2008. Vol. 36. N 4. P. 745–748.</mixed-citation><mixed-citation xml:lang="en">Sclavi B. 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