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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">10299</article-id><article-id pub-id-type="doi">10.32607/20758251-2019-11-1-14-22</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">Consensus Integrase of a New HIV-1 Genetic Variant CRF63_02A1</article-title><trans-title-group xml:lang="ru"><trans-title>Консенсусная интеграза нового генетического варианта CRF63_02A1 ВИЧ-1</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Agapkina</surname><given-names>Yu. Yu.</given-names></name><name xml:lang="ru"><surname>Агапкина</surname><given-names>Ю. Ю.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>gottikh@belozersky.msu.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Pustovarova</surname><given-names>M. A.</given-names></name><name xml:lang="ru"><surname>Пустоварова</surname><given-names>M. A.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>gottikh@belozersky.msu.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Korolev</surname><given-names>S. P.</given-names></name><name xml:lang="ru"><surname>Королев</surname><given-names>С. П.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>gottikh@belozersky.msu.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Zyryanova</surname><given-names>D. P.</given-names></name><name xml:lang="ru"><surname>Зырянова</surname><given-names>Д. П.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>gottikh@belozersky.msu.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Ivlev</surname><given-names>V. V.</given-names></name><name xml:lang="ru"><surname>Ивлев</surname><given-names>В. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>gottikh@belozersky.msu.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Totmenin</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Тотменин</surname><given-names>A. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>gottikh@belozersky.msu.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Gashnikova</surname><given-names>N. M.</given-names></name><name xml:lang="ru"><surname>Гашникова</surname><given-names>Н. M.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>gottikh@belozersky.msu.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Gottikh</surname><given-names>M. B.</given-names></name><name xml:lang="ru"><surname>Готтих</surname><given-names>M. Б.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>gottikh@belozersky.msu.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Lomonosov Moscow State University</institution></aff><aff><institution xml:lang="ru">Московский государственный университет им. М.В. Ломоносова</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Belozersky Institute of Physico-Chemical Biology</institution></aff><aff><institution xml:lang="ru">Научно-исследовательский институт физико-химической биологии им. А.Н. Белозерского Московского государственного университета им. М.В. Ломоносова</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">State Research Center of Virology and Biotechnology “Vector”</institution></aff><aff><institution xml:lang="ru">Государственный научный центр вирусологии и биотехнологии «Вектор»</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2019-03-15" publication-format="electronic"><day>15</day><month>03</month><year>2019</year></pub-date><volume>11</volume><issue>1</issue><issue-title xml:lang="en">VOL 11, NO1 (2019)</issue-title><issue-title xml:lang="ru">ТОМ 11, №1 (2019)</issue-title><fpage>14</fpage><lpage>22</lpage><history><date date-type="received" iso-8601-date="2020-01-17"><day>17</day><month>01</month><year>2020</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2019, Agapkina Y.Y., Pustovarova M.A., Korolev S.P., Zyryanova D.P., Ivlev V.V., Totmenin A.V., Gashnikova N.M., Gottikh M.B.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2019, Агапкина Ю.Ю., Пустоварова M.A., Королев С.П., Зырянова Д.П., Ивлев В.В., Тотменин A.В., Гашникова Н.M., Готтих M.Б.</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="en">Agapkina Y.Y., Pustovarova M.A., Korolev S.P., Zyryanova D.P., Ivlev V.V., Totmenin A.V., Gashnikova N.M., Gottikh M.B.</copyright-holder><copyright-holder xml:lang="ru">Агапкина Ю.Ю., Пустоварова M.A., Королев С.П., Зырянова Д.П., Ивлев В.В., Тотменин A.В., Гашникова Н.M., Готтих M.Б.</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/10299">https://actanaturae.ru/2075-8251/article/view/10299</self-uri><abstract xml:lang="en"><p>The high genetic variability of the human immunodeficiency virus (HIV-1) leads to a constant emergence of new genetic variants, including the recombinant virus CRF63_02A1, which is widespread in the Siberian Federal District of Russia. We studied HIV-1 CRF63_02A1 integrase (IN_CRF) catalyzing the incorporation of viral DNA into the genome of an infected cell. The consensus sequence was designed, recombinant integrase was obtained, and its DNA-binding and catalytic activities were characterized. The stability of the IN_CRF complex with the DNA substrate did not differ from the complex stability for subtype A and B integrases; however, the rate of complex formation was significantly higher. The rates and efficiencies of 3’-processing and strand transfer reactions catalyzed by IN_CRF were found to be higher, too. Apparently, all these distinctive features of IN_CRF may result from specific amino acid substitutions in its N-terminal domain, which plays an important role in enzyme multimerization and binding to the DNA substrate. It was also found that the drug resistance mutations Q148K/G140S and G118R/E138K significantly reduce the catalytic activity of IN_CRF and its sensitivity to the strand transfer inhibitor raltegravir. Reduction in sensitivity to raltegravir was found to be much stronger in the case of double-mutation Q148K/G140S.</p></abstract><trans-abstract xml:lang="ru"><p>Высокая генетическая изменчивость вируса иммунодефицита человека (ВИЧ-1) приводит к по стоянному появлению новых генетических вариантов, к числу которых относится рекомбинантный вирус CRF63_02A1, широко распространенный на территории Сибирского федерального округа России. Нами изучена интеграза CRF63_02A1 ВИЧ-1, катализирующая встраивание вирусной ДНК в геном инфициро ванной клетки. Проведен дизайн консенсусной последовательности, получен препарат рекомбинантной ин тегразы и охарактеризована ее ДНК-связывающая и каталитическая активность. Стабильность комплекса интегразы CRF63_02A1 с ДНК-субстратом такая же, как у комплексов интеграз подтипов А и В, однако ско рость его образования существенно выше. Более высокими оказались скорости и эффективности реакций, катализируемых этой интегразой: 3’-процессинга и переноса цепи. Это может быть связано с характерными для интегразы CRF63_02A1 аминокислотными заменами в N-концевом домене, играющем важную роль в мультимеризации фермента и его связывании с ДНК-субстратом. Установлено также, что мутации лекар ственной устойчивости Q148K/G140S и G118R/E138K существенно снижают каталитическую активность интегразы CRF63_02A1 и ее чувствительность к ингибитору интеграции ралтегравиру. При этом наиболее сильное снижение чувствительности обеспечивает двойная мутация Q148K/G140S.</p></trans-abstract><kwd-group xml:lang="en"><kwd>human immunodeficiency virus</kwd><kwd>CRF63_02A1 genetic variant</kwd><kwd>integrase</kwd><kwd>strand transfer inhibitor</kwd><kwd>drug resistance mutations</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>вирус иммунодефицита человека</kwd><kwd>генетический вариант CRF63_02A1</kwd><kwd>интеграза</kwd><kwd>ингибитор переноса цепи</kwd><kwd>мутации лекарственной устойчивости</kwd></kwd-group><funding-group><funding-statement xml:lang="en">This work was supported by the Russian Science Foundation (grant No. 16-15-10238).</funding-statement><funding-statement xml:lang="ru">Работа поддержана Российским научным фондом (грант № 16-15-10238).</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>[1] Foley B., Leitner T., Apetrei C., Hahn B., Mizrachi I., Mullins J., Rambaut A., Wolinsky S., Korber B. // Theoretical Biology and Biophysics Group. 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