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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">10422</article-id><article-id pub-id-type="doi">10.32607/20758251-2016-8-4-82-90</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">A Cascade of Thermophilic Enzymes As an Approach to the Synthesis of Modified Nucleotides</article-title><trans-title-group xml:lang="ru"><trans-title>Каскад термофильных ферментов как инструмент создания модифицированных нуклеотидов</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Esipov</surname><given-names>R. S.</given-names></name><name xml:lang="ru"><surname>Есипов</surname><given-names>Р. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>esipov@mx.ibch.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Abramchik</surname><given-names>Yu. A.</given-names></name><name xml:lang="ru"><surname>Абрамчик</surname><given-names>Ю. A.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>esipov@mx.ibch.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Fateev</surname><given-names>I. V.</given-names></name><name xml:lang="ru"><surname>Фатеев</surname><given-names>И. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>esipov@mx.ibch.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Konstantinova</surname><given-names>I. D.</given-names></name><name xml:lang="ru"><surname>Константинова</surname><given-names>И. Д.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>esipov@mx.ibch.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kostromina</surname><given-names>M. A.</given-names></name><name xml:lang="ru"><surname>Костромина</surname><given-names>M. A.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>esipov@mx.ibch.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Muravyova</surname><given-names>T. I.</given-names></name><name xml:lang="ru"><surname>Муравьева</surname><given-names>T. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>esipov@mx.ibch.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Artemova</surname><given-names>K. G.</given-names></name><name xml:lang="ru"><surname>Артемова</surname><given-names>K. Г.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>esipov@mx.ibch.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Miroshnikov</surname><given-names>A. I.</given-names></name><name xml:lang="ru"><surname>Мирошников</surname><given-names>A. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>esipov@mx.ibch.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry</institution></aff><aff><institution xml:lang="ru">Институт биоорганической химии им. академиков М.М. Шемякина и Ю.А. Овчинникова РАН</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2016-12-15" publication-format="electronic"><day>15</day><month>12</month><year>2016</year></pub-date><volume>8</volume><issue>4</issue><issue-title xml:lang="en">VOL 8, NO4 (2016)</issue-title><issue-title xml:lang="ru">ТОМ 8, №4 (2016)</issue-title><fpage>82</fpage><lpage>90</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 ©; 2016, Esipov R.S., Abramchik Y.A., Fateev I.V., Konstantinova I.D., Kostromina M.A., Muravyova T.I., Artemova K.G., Miroshnikov A.I.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2016, Есипов Р.С., Абрамчик Ю.A., Фатеев И.В., Константинова И.Д., Костромина M.A., Муравьева T.И., Артемова K.Г., Мирошников A.И.</copyright-statement><copyright-year>2016</copyright-year><copyright-holder xml:lang="en">Esipov R.S., Abramchik Y.A., Fateev I.V., Konstantinova I.D., Kostromina M.A., Muravyova T.I., Artemova K.G., Miroshnikov A.I.</copyright-holder><copyright-holder xml:lang="ru">Есипов Р.С., Абрамчик Ю.A., Фатеев И.В., Константинова И.Д., Костромина M.A., Муравьева T.И., Артемова K.Г., Мирошников A.И.</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/10422">https://actanaturae.ru/2075-8251/article/view/10422</self-uri><abstract xml:lang="en"><p>We propose a new approach for the synthesis of biologically important nucleotides which includes a multi-enzymatic cascade conversion of D-pentoses into purine nucleotides. The approach exploits nucleic acid exchange enzymes from thermophilic microorganisms: ribokinase, phosphoribosylpyrophosphate synthetase, and adenine phosphoribosyltransferase. We cloned the ribokinase gene from Thermus sp. 2.9, as well as two different genes of phosphoribosylpyrophosphate synthetase (PRPP-synthetase) and the adenine phosphoribosyltransferase (APR-transferase) gene from Thermus thermophilus HB27 into expression vectors, generated high-yield E. coli producer strains, developed methods for the purification of the enzymes, and investigated enzyme substrate specificity. The enzymes were used for the conversion of D-pentoses into 5-phosphates that were further converted into 5-phospho-α-D-pentofuranose 1-pyrophosphates by means of ribokinase and PRPP-synthetases. Target nucleotides were obtained through the condensation of the pyrophosphates with adenine and its derivatives in a reaction catalyzed by APR-transferase. 2-Chloro- and 2-fluoroadenosine monophosphates were synthesized from D-ribose and appropriate heterobases in one pot using a system of thermophilic enzymes in the presence of ATP, ribokinase, PRPP-synthetase, and APR-transferase.</p></abstract><trans-abstract xml:lang="ru"><p>Предложена новая стратегия биосинтеза биологически важных нуклеотидов, заключающаяся в мультиферментативном каскадном превращении D-пентоз в пуриновые нуклеотиды c использованием ферментов нуклеинового обмена термофильных микроорганизмов (рибокиназы, фосфорибозилпиро- фосфатсинтетазы и аденин-фосфорибозилтрансферазы). Клонирован ген рибокиназы термофильного микроорганизма Thermus sp. 2.9, два разных гена фосфорибозилпирофосфатсинтетазы (PRPP-cинтетазы) и ген аденин-фосфорибозилтрансферазы (APR-трансферазы) из Thermus thermophilus HB27. Получены высокопродуктивные штаммы-продуценты Escherichia coli, разработаны методы выделения упомянутых ферментов, изучена их субстратная специфичность. Показана возможность использования этих фер- ментов для превращения D-пентоз в 5-фосфаты, а затем под действием рибокиназы и PRPP-cинтетаз - в 5-фосфо-α-D-пентофуранозо-1-пирофосфаты, конденсация которых с аденином и рядом его структурных аналогов, катализируемая APR-трансферазой, приводила к получению искомых нуклеотидов. На примере 2-хлор(фтор)-аденозинмонофосфата (2Cl-AMP и 2F-AMP) показана возможность использования системы термофильных ферментов в одном реакционном объеме для получения биологически активных нуклеотидов из D-рибозы и соответствующих гетерооснований в присутствии ATP, рибокиназы, PRPP-cинтетазы и APR-трансферазы.</p></trans-abstract><kwd-group xml:lang="en"><kwd>enzymatic nucleotide synthesis</kwd><kwd>ribokinase</kwd><kwd>phosphoribosylpyrophosphate synthetase</kwd><kwd>adenine phosphoribosyltransferase</kwd><kwd>thermophilic microorganisms</kwd><kwd>substrate properties</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>аденин-фосфорибозилтрансфераза термофильных микроорганизмов</kwd><kwd>рибокиназа</kwd><kwd>субстратные свойства</kwd><kwd>ферментативный синтез нуклеотидов</kwd><kwd>фосфорибозилпирофосфатсинтетаза</kwd></kwd-group><funding-group><funding-statement xml:lang="en">The authors express gratitude the Russian Science Foundation (RSF project No. 14-50-00131) for the financial support of the work.</funding-statement><funding-statement xml:lang="ru">Авторы выражают благодарность Российскому научному фонду (РНФ проект № 14-50-00131) за финансовую поддержку работы.</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>[1] Nelson D.L., Cox M.M. // Nucleotides and Nucleic Acids. // Nucleotides and Nucleic Acids. 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