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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Acta Naturae</journal-id><journal-title-group><journal-title xml:lang="en">Acta Naturae</journal-title><trans-title-group xml:lang="ru"><trans-title>Acta Naturae</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2075-8251</issn><publisher><publisher-name xml:lang="en">Acta Naturae Ltd</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">10852</article-id><article-id pub-id-type="doi">10.32607/20758251-2019-11-2-82-91</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Research Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Экспериментальные статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">The Profile of Post-translational Modifications of Histone H1 in Chromatin of Mouse Embryonic Stem Cells</article-title><trans-title-group xml:lang="ru"><trans-title>Профиль посттрансляционных модификаций гистона Н1 в хроматине эмбриональных стволовых клеток мыши</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Starkova</surname><given-names>T. Yu.</given-names></name><name xml:lang="ru"><surname>Старкова</surname><given-names>Т. Ю.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>t.starkova@incras.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Artamonova</surname><given-names>T. O.</given-names></name><name xml:lang="ru"><surname>Артамонова</surname><given-names>Т. О.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>t.starkova@incras.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Ermakova</surname><given-names>V. V.</given-names></name><name xml:lang="ru"><surname>Ермакова</surname><given-names>В. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>t.starkova@incras.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Chikhirzhina</surname><given-names>E. V.</given-names></name><name xml:lang="ru"><surname>Чихиржина</surname><given-names>Е. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>t.starkova@incras.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Khodorkovskii</surname><given-names>M. A.</given-names></name><name xml:lang="ru"><surname>Ходорковский</surname><given-names>М. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>t.starkova@incras.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Tomilin</surname><given-names>A. N.</given-names></name><name xml:lang="ru"><surname>Томилин</surname><given-names>А. Н.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>a.tomilin@incras.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff3"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Institute of Cytology of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Институт цитологии РАН</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Peter the Great St.Petersburg Polytechnic University</institution></aff><aff><institution xml:lang="ru">Санкт-Петербургский государственный политехнический университет имени Петра Великого</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Saint Petersburg State University</institution></aff><aff><institution xml:lang="ru">Санкт-Петербургский государственный университет</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2019-06-15" publication-format="electronic"><day>15</day><month>06</month><year>2019</year></pub-date><volume>11</volume><issue>2</issue><issue-title xml:lang="en">VOL 11, NO2 (2019)</issue-title><issue-title xml:lang="ru">ТОМ 11, №2 (2019)</issue-title><fpage>82</fpage><lpage>91</lpage><history><date date-type="received" iso-8601-date="2020-01-21"><day>21</day><month>01</month><year>2020</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2019, Starkova T.Y., Artamonova T.O., Ermakova V.V., Chikhirzhina E.V., Khodorkovskii M.A., Tomilin A.N.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2019, Старкова Т.Ю., Артамонова Т.О., Ермакова В.В., Чихиржина Е.В., Ходорковский М.А., Томилин А.Н.</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="en">Starkova T.Y., Artamonova T.O., Ermakova V.V., Chikhirzhina E.V., Khodorkovskii M.A., Tomilin A.N.</copyright-holder><copyright-holder xml:lang="ru">Старкова Т.Ю., Артамонова Т.О., Ермакова В.В., Чихиржина Е.В., Ходорковский М.А., Томилин А.Н.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://actanaturae.ru/2075-8251/article/view/10852">https://actanaturae.ru/2075-8251/article/view/10852</self-uri><abstract xml:lang="en"><p>Linker histone H1 is one of the main chromatin proteins which plays an important role in organizing eukaryotic DNA into a compact structure. There is data indicating that cell type-specific post-translational modifications of H1 modulate chromatin activity. Here, we compared histone H1 variants from NIH/3T3, mouse embryonic fibroblasts (MEFs), and mouse embryonic stem (ES) cells using matrix-assisted laser desorption/ ionization Fourier transform ion cyclotron resonance mass spectrometry (MALDI-FT-ICR-MS). We found significant differences in the nature and positions of the post-translational modifications (PTMs) of H1.3-H1.5 variants in ES cells compared to differentiated cells. For instance, methylation of K75 in the H1.2-1.4 variants; methylation of K108, K148, K151, K152 K154, K155, K160, K161, K179, and K185 in H1.1, as well as of K168 in H1.2; phosphorylation of S129, T146, T149, S159, S163, and S180 in H1.1, T180 in H1.2, and T155 in H1.3 were identified exclusively in ES cells. The H1.0 and H1.2 variants in ES cells were characterized by an enhanced acetylation and overall reduced expression levels. Most of the acetylation sites of the H1.0 and H1.2 variants from ES cells were located within their C-terminal tails known to be involved in the stabilization of the condensed chromatin. These data may be used for further studies aimed at analyzing the functional role played by the revealed histone H1 PTMs in the self-renewal and differentiation of pluripotent stem cells.</p></abstract><trans-abstract xml:lang="ru"><p>Линкерный гистон H1 - один из основных ядерных белков, принимающих участие в структурно регуляторной организации хроматина. Ряд данных указывает на то, что посттрансляционные модификации H1 способны модулировать активность хроматина. С помощью масс-спектрометрии высокого разрешения (MALDI-FT-ICR-MS) мы обнаружили существенные различия в природе и положениях посттрансляционных модификаций в некоторых вариантах гистона H1 (H1.3-H1.5) из эмбриональных стволовых клеток и дифференцированных клеток - иммортализованных фибробластов линии NIH/3T3 и эмбриональных фибробластов (МЭФ). Так, метилирование K75 в вариантах H1.2-1.4, метилирование K108, K148, K151, K152 K154, K155, K160, K161, K179 и K185 в Н1.1, а также K168 в H1.2, фосфорилирование S129, T146, T149, S159, S163 и S180 в H1.1, T180 в H1.2 и T155 в H1.3 идентифицированы исключительно в эмбриональных стволовых клетках. Большинство сайтов ацетилирования вариантов H1.0 и H1.2 в эмбриональных стволовых клетках расположены в C-концевых доменах, известных своим участием в стабилизации конденсированного хроматина. Полученные данные могут послужить основой для дальнейших исследований, направленных на анализ функциональной значимости посттрансляционной модификации гистона H1 для процессов самообновления и дифференцировки плюрипотентных стволовых клеток.</p></trans-abstract><kwd-group xml:lang="en"><kwd>mouse embryonic stem cells</kwd><kwd>linker histone H1</kwd><kwd>post-translational modifications</kwd><kwd>2-D electrophoresis</kwd><kwd>MALDI mass spectrometry</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>двумерный электрофорез</kwd><kwd>линкерный гистон Н1</kwd><kwd>масс-спектрометрия</kwd><kwd>посттрансляционные модификации</kwd><kwd>эмбриональные стволовые клетки мыши</kwd></kwd-group><funding-group><funding-statement xml:lang="en">These studies were supported by the Russian Foundation for Basic Research (grant No. 18-04-01199). MALDI-mass spectrometry analysis of H1 proteins was carried out using the scientific equipment of the Center of Shared Usage (“The analytical center of nano- and biotechnologies of SPbSPU”) with financial support from the Ministry of Education and Science of the Russian Federation.</funding-statement><funding-statement xml:lang="ru">Исследования поддержаны Российским фондом фундаментальных исследований (грант № 18-04-01199). MALDI-масс-спектрометрический анализ белков H1 проводили с использованием научного оборудования ЦКП«Аналитический центр нано- и биотехнологий СПбГПУ» на базе ФГАОУ ВО «СПбПУ» при финансовой поддержке Министерства образования и науки Российской Федерации.</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>[1] White A.E., Hieb A.R., Luger K. // Sci. 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