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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">vestich</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Национальной академии наук Беларуси. Серия химических наук</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the National Academy of Sciences of Belarus, Chemical Series</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8331</issn><issn pub-type="epub">2524-2342</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29235/1561-8331-2020-56-4-457-464</article-id><article-id custom-type="elpub" pub-id-type="custom">vestich-617</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>БИООРГАНИЧЕСКАЯ ХИМИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>BIOORGANIC CHEMISTRY</subject></subj-group></article-categories><title-group><article-title>Стабильность 5'-диметокситритильной защитной группы синтетического олигонуклеотида в условиях полимеразной цепной реакции</article-title><trans-title-group xml:lang="en"><trans-title>5'-Dimethoxytrityl protection group of synthetic oligonucleotide stability in polymerase chain reaction</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>Щур</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Shchur</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Щур Вероника Владимировна - младший научный сотрудник.</p><p>Ул. Акад. В. Ф. Купревича, 5/2, 220141, Минск</p></bio><bio xml:lang="en"><p>Veronika Vladimirovna Shchur - Junior Researcher.</p></bio><email xlink:type="simple">shchur931@gmail.com</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>Жолнерович</surname><given-names>A. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Zholnerovich</surname><given-names>A. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Жолнерович Андрей Иванович - студент.</p><p>Ул. Акад. В. Ф. Купревича, 5/2, 220141, Минск</p></bio><bio xml:lang="en"><p>Andrei Z. Ivanavich - Student.</p><p>5/2, Acad. Kuprevich Str., Minsk</p></bio><email xlink:type="simple">a.zhauniarovich@gmail.com</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>Буренкова</surname><given-names>Ю. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Burankova</surname><given-names>Y. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Буренкова Юлия Павловна - младший научный сотрудник.</p><p>Ул. Акад. В. Ф. Купревича, 5/2, 220141, Минск</p></bio><bio xml:lang="en"><p>Yuliya P. Burankova - Junior Researcher.</p><p>5/2, Acad. Kuprevich Str., Minsk</p></bio><email xlink:type="simple">ms.yuliyab@mail.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>Янцевич</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Yantsevich</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Янцевич Алексей Викторович - кандидат химических наук, заведующий лабораторией.</p></bio><bio xml:lang="en"><p>Aleksei V. Yantsevich - Ph. D. (Chemistry), Head of the Laboratory.</p><p>5/2, Acad. Kuprevich Str., Minsk</p></bio><email xlink:type="simple">al.yantsevich@gmail.com</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>Усанов</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Usanov</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Усанов Сергей Александрович - член-корреспондент, доктор химических наук, профессор, гл. научный сотрудник.</p><p>Ул. Акад. В. Ф. Купревича, 5/2, 220141, Минск</p></bio><bio xml:lang="en"><p>Sergei A. Usanov - Corresponding Member of the National Academy of Sciences of Belarus, D. S. (Chemistry), Professor, Principal Researcher.</p><p>5/2, Acad. Kuprevich Str., Minsk</p></bio><email xlink:type="simple">us-anov@iboch.by</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт биоорганической химии, Национальная академия наук Беларуси</institution></aff><aff xml:lang="en"><institution>Institute of Bioorganic Chemistry, National Academy of Sciences of Belarus</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>05</day><month>12</month><year>2020</year></pub-date><volume>56</volume><issue>4</issue><fpage>457</fpage><lpage>464</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Щур В.В., Жолнерович A.И., Буренкова Ю.П., Янцевич А.В., Усанов С.А., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Щур В.В., Жолнерович A.И., Буренкова Ю.П., Янцевич А.В., Усанов С.А.</copyright-holder><copyright-holder xml:lang="en">Shchur V.V., Zholnerovich A.I., Burankova Y.P., Yantsevich A.V., Usanov S.A.</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://vestichem.belnauka.by/jour/article/view/617">https://vestichem.belnauka.by/jour/article/view/617</self-uri><abstract><p>Модификация 5-OH группы нуклеиновых кислот заместителями с различными физико-химическими свойствами имеет принципиальное значение для молекулярной биологии. Интересным представляется исследование симметричного и асимметричного замещения 5'-гидроксила двуцепочечной ДНК (дцДНК) 4,4'-диметок-ситритильной (ДМТ) группой. Симметричное замещение может позволить осуществлять селективное лигирование дцДНК в плазмидный вектор после ее сборки из олигонуклеотидов методом полимеразной цепной реакции (ПЦР) по сравнению с побочными укороченными продуктами сборки. Синтез асимметрично меченной 5'-ДМТ дцДНК при условии наличия специфичной к модификациям 5'-конца экзонуклеазы позволит получать протяженную синтетическую оцДНК, применяемую для сайт-специфичного включения гена в геном с использованием технологии CRISPR/ Cas9. Чтобы провести подобные исследования необходимо выяснить, стабилен ли синтетический 5'-ДМТ олигонуклеотид в условиях ПЦР. B данной работе методом высокоэффективной жидкостной хроматографии с УФ (260 нм) и масс-спектрометрической детекцией мы показали, что 5'-ДМТ-группа стабильна в составе синтетического олигонуклеотида в условиях ПЦР, однако присутствие тиольных соединений может снижать выход 5'-ДМТ-дцДНК. Мы планируем дальнейшее изучение влияния 5'-ДМТ-группы в составе синтетических ДНК на функционирование различных ферментов.</p></abstract><trans-abstract xml:lang="en"><p>Modification of 5'-OH group of nucleic acids by substituents with various physicochemical properties is important for molecular biology. Investigation of symmetric and asymmetric substitution of 5'-hydroxyl of dsDNA by 4,4'-dimetho-xytrityl (DMT) group seems interesting. Symmetric substitution can allow performing a selective ligation of dsDNA assembled from oligonucleotides by polymerase chain reaction as compared to shortened assembly by-products into a plasmid vector. Synthesis of asymmetrically labeled 5'-DMT dsDNA in case of presence of exonuclease specific to 5'-end modifications will allow obtaining a long synthetic ssDNA used for site-specific gene insertion into a genome by CRISPR/Cas9 technique. To conduct such investigations, it is necessary to know whether synthetic 5'-DMT oligonucleotide is stable under PCR conditions. Here we demonstrated by high performance liquid chromatography with UV (260 nm) and mass-spectrometric detection that 5'-DMT group of synthetic oligonucleotide is stable under PCR conditions but the presence of thiol compounds can decrease a yield of 5'-DMT dsDNA. We plan a further research on influence of 5'-DMT group of synthetic DNA on functionality of various enzymes.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>олигонуклеотиды</kwd><kwd>4</kwd><kwd>4'-диметокситритильная группа</kwd><kwd>ДМТ</kwd><kwd>полимеразная цепная реакция</kwd><kwd>ПЦР</kwd><kwd>синтетический ген</kwd></kwd-group><kwd-group xml:lang="en"><kwd>oligonucleotides</kwd><kwd>4</kwd><kwd>4'-dimethoxytrityl group</kwd><kwd>DMT</kwd><kwd>polymerase chain reaction</kwd><kwd>PCR</kwd><kwd>synthetic gene</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена в рамках задания 2.20 подпрограммы 2 государственной программы научных исследований «Химические технологии и материалы» на 2016-2020 гг., а также отдельного проекта фундаментальных и прикладных научных исследований НАН Беларуси «Разработка и автоматизация эффективных методов получения синтетических генов» на 2018-2019 гг.</funding-statement><funding-statement xml:lang="en">This work has been performed as a part of project 2.20 of the subprogram 2 of the state program “Chemical technologies and materials” for 2016-2020, and also as a part of separate project of fundamental and applied scientific research of the National Academy of Sciences of Belarus “Development and automation of effective methods of synthetic gene obtaining” for 2018-2019</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Versatile 5'-functionalization of oligonucleotides on solid support: amines, azides, thiols, and thioethers via phosphorus chemistry / G. 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