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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">Doklady Biological Sciences</journal-id><journal-title-group><journal-title xml:lang="en">Doklady Biological Sciences</journal-title><trans-title-group xml:lang="ru"><trans-title>Доклады Российской академии наук. Науки о жизни</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2686-7389</issn><issn publication-format="electronic">3034-5057</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">693504</article-id><article-id pub-id-type="doi">10.31857/S2686738925040107</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>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">Protein complementation approach for quantitative and qualitative analysis of hTERP in cell</article-title><trans-title-group xml:lang="ru"><trans-title>Метод комплементации белков для качественной и количественной оценки содержания hTERP в клетке</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Shamonova</surname><given-names>M. A.</given-names></name><name xml:lang="ru"><surname>Шамонова</surname><given-names>М. А.</given-names></name></name-alternatives><email>mprubtsova@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Koriagina</surname><given-names>M. S.</given-names></name><name xml:lang="ru"><surname>Корягина</surname><given-names>М. С.</given-names></name></name-alternatives><email>mprubtsova@gmail.com</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>Shliapina</surname><given-names>V. L.</given-names></name><name xml:lang="ru"><surname>Шляпина</surname><given-names>В. Л.</given-names></name></name-alternatives><email>mprubtsova@gmail.com</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Dontsova</surname><given-names>O. A.</given-names></name><name xml:lang="ru"><surname>Донцова</surname><given-names>О. А.</given-names></name></name-alternatives><email>mprubtsova@gmail.com</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/><xref ref-type="aff" rid="aff3"/><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Rubtsova</surname><given-names>M. P.</given-names></name><name xml:lang="ru"><surname>Рубцова</surname><given-names>М. П.</given-names></name></name-alternatives><email>mprubtsova@gmail.com</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, Department of Chemistry</institution></aff><aff><institution xml:lang="ru">Московский государственный университет имени М. В. Ломоносова, химический факультет</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Институт биоорганической химии имени академиков М. М. Шемякина и Ю. А. Овчинникова РАН</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">A. N. Belozersky Institute of Physico-Chemical Biology</institution></aff><aff><institution xml:lang="ru">Научно-исследовательский институт физико-химической биологии имени А. Н. Белозерского</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">Skolkovo Institute of Science and Technology, Center for Molecular and Cellular Biology</institution></aff><aff><institution xml:lang="ru">Сколковский институт науки и технологий, центр молекулярной и клеточной биологии</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-08-15" publication-format="electronic"><day>15</day><month>08</month><year>2025</year></pub-date><volume>523</volume><issue>1</issue><issue-title xml:lang="en">VOL 523, NO (2025)</issue-title><issue-title xml:lang="ru">ТОМ 523, № (2025)</issue-title><fpage>439</fpage><lpage>445</lpage><history><date date-type="received" iso-8601-date="2025-10-16"><day>16</day><month>10</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Russian Academy of Sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Российская академия наук</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Russian Academy of Sciences</copyright-holder><copyright-holder xml:lang="ru">Российская академия наук</copyright-holder></permissions><self-uri xlink:href="https://journals.eco-vector.com/2686-7389/article/view/693504">https://journals.eco-vector.com/2686-7389/article/view/693504</self-uri><abstract xml:lang="en"><p>The study of protein functioning in a cell cannot be performed by analyzing their content in the cell. The most commonly used method of analysis, western blotting, cannot always be used due to the impossibility of obtaining antibodies that specifically recognize the protein of interest. At the same time, western blotting is a semi-quantitative method of analysis and does not allow determining the exact content of protein in the cell. In this work, we used the protein complementation method for the qualitative and quantitative assessment of the hTERP protein content in the cell. Using genome editing, a HiBiT appendage was introduced to the C-terminus of the hTERP protein, the complementation of which with LgBiT restores active luciferase. As a result, we determined the hTERP protein content in the HEK293T cell line.</p></abstract><trans-abstract xml:lang="ru"><p>Изучение функционирования белков в клетке невозможно без анализа их содержания в клетке. Наиболее используемый метод анализа вестерн-блоттингом не всегда может быть использован из-за невозможности получить антитела, специфично узнающие белок интереса. В то же время вестерн-блоттинг является полуколичественным методом анализа и не позволяет определить точное содержание белка в клетке. В данной работе мы применили метод комплементации белков для качественной и количественной оценки содержания белка hTERP в клетке. При помощи редактирования генома на С-конец белка hTERP был введен довесок HiBiT, комплементация которого с LgBiT восстанавливает активную люциферазу. В результате мы определили содержание белка hTERP в клетке линии НЕК293Т.</p></trans-abstract><kwd-group xml:lang="en"><kwd>telomerase RNA</kwd><kwd>genome editing</kwd><kwd>luciferase</kwd><kwd>protein complementation</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>теломеразная РНК</kwd><kwd>геномное редактирование</kwd><kwd>люцифераза</kwd><kwd>комплементация белка</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке Российского научного фонда (работы по редактированию генома из средств гранта 21-64-00006-П, работы по анализу содержания hTERP_HiBiT из средств гранта 23-14-00058).</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Levy M. Z., Allsop R. C., Futcher A. B., et al. Telomere end-replication problem and cell aging // Journal of Molecular Biology. 1992. Vol. 225, № 4. 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