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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">vestnik-bio-msu</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Московского университета. Серия 16. Биология</journal-title><trans-title-group xml:lang="en"><trans-title>Vestnik Moskovskogo universiteta. Seriya 16. Biologiya</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0137-0952</issn><publisher><publisher-name>Lomonosov Moscow State University,  School of Biology</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.55959/MSU0137-0952-16-80-3S-15</article-id><article-id custom-type="elpub" pub-id-type="custom">vestnik-bio-msu-1548</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>КРАТКОЕ СООБЩЕНИЕ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>SHORT COMMUNICATION</subject></subj-group></article-categories><title-group><article-title>Реконструкция осевой фибриллы Stx-конвертирующего бактериофага phi24B с помощью криоэлектронной микроскопии</article-title><trans-title-group xml:lang="en"><trans-title>Cryo-electron microscopy study of the axial fiber of the Stx-converting bacteriophage phi24B</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1112-2356</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Моисеенко</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Moiseenko</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Моисеенко Андрей Владимирович – науч. сотр. кафедры биоинженерии биологического факультета</p><p>119234, г. Москва, Ленинские горы, д. 1, стр. 12</p><p>Тел.: 8-495-939-57-38</p></bio><bio xml:lang="en"><p>1–12 Leninskie gory, 119234, Moscow</p></bio><email xlink:type="simple">postmoiseenko@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0008-2045-0080</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бубенчиков</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Bubenchikov</surname><given-names>M. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Бубенчиков Матвей Андреевич – лаборант кафедры биоинженерии биологического факультета</p><p>119234, г. Москва, Ленинские горы, д. 1, стр. 12</p><p>Тел.: 8-495-939-57-38</p></bio><bio xml:lang="en"><p>1–12 Leninskie gory, 119234, Moscow</p></bio><email xlink:type="simple">wardersarsolid@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0005-6969-4527</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Чжан</surname><given-names>И.</given-names></name><name name-style="western" xml:lang="en"><surname>Zhang</surname><given-names>Y. Zh.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Чжан Ичен – аспирант кафедры биоинженерии биологического факультета</p><p>119234, г. Москва, Ленинские горы, д. 1, стр. 12</p><p>518172, Провинция Гуандун, г. Шэньчжэнь, ул. Гоцзидасюеюань, д. 1</p><p>Тел.: 8-495-939-57-38</p></bio><bio xml:lang="en"><p>1–12 Leninskie gory, 119234, Moscow</p><p>1 International University Park Road, Shenzhen, Guangdong Province, 518172</p></bio><email xlink:type="simple">zhangyichen2010@126.com</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8016-3760</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кузнецов</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Kuznetsov</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кузнецов Александр Сергеевич – канд. биол. наук, науч. сотр. лаборатории вирусов микроорганизмов</p><p>117312, г. Москва, пр-т 60-летия Октября, д. 7, корп. 2</p><p>Тел.: 8-499-135-72-64</p></bio><bio xml:lang="en"><p>7–2 60-letiya Oktyabrya Str., Moscow, 117312</p></bio><email xlink:type="simple">alexbluesking@gmail.com</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6991-1983</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Летаров</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Letarov</surname><given-names>A. V</given-names></name></name-alternatives><bio xml:lang="ru"><p>Летаров Андрей Викторович – докт. биол. наук, зав. лабораторией вирусов микроорганизмов</p><p>117312, г. Москва, пр-т 60-летия Октября, д. 7, корп. 2</p><p>Тел.: 8-499-135-72-64</p></bio><bio xml:lang="en"><p>7–2 60-letiya Oktyabrya Str., Moscow, 117312</p></bio><email xlink:type="simple">letarov@gmail.com</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-4678-232X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Соколова</surname><given-names>О. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Sokolova</surname><given-names>O. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Соколова Ольга Сергеевна – докт. биол. наук, проф. кафедры биоинженерии биологического факультета</p><p>119234, г. Москва, Ленинские горы, д. 1, стр. 12</p><p>518172, Провинция Гуандун, г. Шэньчжэнь, ул. Гоцзидасюеюань, д. 1</p><p>Тел.: 8-495-939-57-38</p></bio><bio xml:lang="en"><p>1–12 Leninskie gory, 119234, Moscow</p><p>1 International University Park Road, Shenzhen, Guangdong Province, 518172</p></bio><email xlink:type="simple">sokolova@mail.bio.msu.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Кафедра биоинженерии, биологический факультет, Московский государственный университет имени М.В. Ломоносова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Department of Bioengineering, Faculty of Biology, Lomonosov Moscow State University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Кафедра биоинженерии, биологический факультет, Московский государственный университет имени М.В. Ломоносова; Биологический факультет, Университет МГУ-ППИ в Шэньчжэне</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Department of Bioengineering, Faculty of Biology, Lomonosov Moscow State University; Faculty of Biology, MSU-BIT University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Институт микробиологии имени С.Н. Виноградского, Федеральный исследовательский центр «Фундаментальные  основы биотехнологии», Российская академия наук</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Winogradsky Institute of Microbiology, Federal Research Center “Biotechnology”, Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>10</day><month>11</month><year>2025</year></pub-date><volume>80</volume><issue>3S</issue><elocation-id>101–105</elocation-id><permissions><copyright-statement>Copyright &amp;#x00A9; Моисеенко А.А., Бубенчиков М.А., Чжан И.Z., Кузнецов А.С., Летаров А.В., Соколова О.С., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Моисеенко А.А., Бубенчиков М.А., Чжан И., Кузнецов А.С., Летаров А.В., Соколова О.С.</copyright-holder><copyright-holder xml:lang="en">Moiseenko A.V., Bubenchikov M.A., Zhang Y.Z., Kuznetsov A.S., Letarov A.V., Sokolova O.S.</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://vestnik-bio-msu.elpub.ru/jour/article/view/1548">https://vestnik-bio-msu.elpub.ru/jour/article/view/1548</self-uri><abstract><p>Методом криоэлектронной микроскопии была изучена структура осевой фибриллы gp56, части адсорбционного аппарата Stx-конвертирующего фага phi24B. Осевая фибрилла обладает значительной подвижностью, тример gp56 окружен массивным комплексом гексамерного белка сопла gp57, что создает интерфейс несовпадения симметрий и затрудняет построение трехмерной реконструкции. С применением подхода расширения симметрии и локального уточнения ориентаций была получена карта рассеивающего потенциала для осевой фибриллы, визуализирована третичная структура ее глобулярных доменов и определено их расположение относительно белков адсорбционного аппарата phi24B.</p></abstract><trans-abstract xml:lang="en"><p>Using cryo-electron microscopy, we studied the structure of the axial fiber protein gp56, a component of the adsorption apparatus of the Stx-converting phage phi24B. The axial fiber is highly mobile, and the gp56 trimer is encased by the bulky hexameric nozzle protein gp57, creating a symmetry-mismatch interface that complicates three-dimensional reconstruction. By applying symmetry expansion and local orientation refinement, we generated a density map of the axial fiber, visualized the tertiary structure of its globular domains, and determined their positions relative to the other proteins of the phi24B adsorption apparatus.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>бактериофаг</kwd><kwd>криоэлектронная микроскопия</kwd><kwd>конформационная гетерогенность</kwd></kwd-group><kwd-group xml:lang="en"><kwd>bacteriophage</kwd><kwd>cryo-electron microscopy</kwd><kwd>conformational heterogeneity</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке  Российского научного фонда (проект № 25-24 00110).</funding-statement><funding-statement xml:lang="en">This work was supported by the Russian Science Foundation, project no. 25-24-00110.</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">Allison H.E. 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