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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">10305</article-id><article-id pub-id-type="doi">10.32607/20758251-2019-11-1-58-65</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">Structure of the Anti-C60 Fullerene Antibody Fab Fragment: Structural Determinants of Fullerene Binding</article-title><trans-title-group xml:lang="ru"><trans-title>Структура FAB-фрагментов антител к фуллерену C<sub>60</sub>: структурные детерминанты связывания фуллерена</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Osipov</surname><given-names>E. M.</given-names></name><name xml:lang="ru"><surname>Осипов</surname><given-names>E. M.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>vpopov@inbi.ras.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Hendrickson</surname><given-names>O. D.</given-names></name><name xml:lang="ru"><surname>Гендриксон</surname><given-names>O. Д.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>vpopov@inbi.ras.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Tikhonova</surname><given-names>T. V.</given-names></name><name xml:lang="ru"><surname>Тихонова</surname><given-names>T. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>vpopov@inbi.ras.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Zherdev</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Жердев</surname><given-names>A. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>vpopov@inbi.ras.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Solopova</surname><given-names>O. N.</given-names></name><name xml:lang="ru"><surname>Солопова</surname><given-names>O. Н.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>vpopov@inbi.ras.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Sveshnikov</surname><given-names>P. G.</given-names></name><name xml:lang="ru"><surname>Свешников</surname><given-names>П. Г.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>vpopov@inbi.ras.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Dzantiev</surname><given-names>B. B.</given-names></name><name xml:lang="ru"><surname>Дзантиев</surname><given-names>Б. Б.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>vpopov@inbi.ras.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Popov</surname><given-names>V. O.</given-names></name><name xml:lang="ru"><surname>Попов</surname><given-names>В. O.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>vpopov@inbi.ras.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Институт биохимии им. А. Н. Баха, Федеральный исследовательский центр «Фундаментальные основы биотехнологии» РАН</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Russian Research Center of Molecular Diagnostics and Therapy</institution></aff><aff><institution xml:lang="ru">Всероссийский научный центр молекулярной диагностики и лечения</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>58</fpage><lpage>65</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, Osipov E.M., Hendrickson O.D., Tikhonova T.V., Zherdev A.V., Solopova O.N., Sveshnikov P.G., Dzantiev B.B., Popov V.O.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2019, Осипов E.M., Гендриксон O.Д., Тихонова T.В., Жердев A.В., Солопова O.Н., Свешников П.Г., Дзантиев Б.Б., Попов В.O.</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="en">Osipov E.M., Hendrickson O.D., Tikhonova T.V., Zherdev A.V., Solopova O.N., Sveshnikov P.G., Dzantiev B.B., Popov V.O.</copyright-holder><copyright-holder xml:lang="ru">Осипов E.M., Гендриксон O.Д., Тихонова T.В., Жердев A.В., Солопова O.Н., Свешников П.Г., Дзантиев Б.Б., Попов В.O.</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/10305">https://actanaturae.ru/2075-8251/article/view/10305</self-uri><abstract xml:lang="en"><p>The structure of the anti-C60 fullerene antibody Fab fragment (FabC60) was solved by X-ray crystallography. The computer-aided docking of C60 into the antigen-binding pocket of FabC60 showed that binding of C60 to FabC60 is governed by the enthalpy and entropy; namely, by π-π stacking interactions with aromatic residues of the antigen-binding site and reduction of the solvent-accessible area of the hydrophobic surface of C60. A fragment of the mobile CDR H3 loop located on the surface of FabC60 interferes with C60 binding in the antigen-binding site, thereby resulting in low antibody affinity for C60. The structure of apo-FabC60 has been deposited with pdbid 6H3H.</p></abstract><trans-abstract xml:lang="ru"><p>Структура Fab-фрагментов антител к фуллерену C60 (FabC60) решена методом рентгеноструктур ного анализа. Виртуальный докинг C60 в антигенсвязывающем кармане FabC60 показал, что связывание C60 с FabC60 обеспечивается энтальпийными и энтропийными факторами: π-π-стэкинг-взаимодействиями с ароматическими остатками антигенсвязывающего кармана и снижением площади доступной раствори телю гидрофобной поверхности C60. Фрагмент подвижной петли CDR H3, локализованный на поверхности FabC60, затрудняет доступ C60 в антигенсвязывающий центр, что может объяснять пониженную аффинность антител к С60. Структура FabC60 депонирована в Protein Data Bank с pdbid 6H3H.</p></trans-abstract><kwd-group xml:lang="en"><kwd>antibodies</kwd><kwd>fullerene</kwd><kwd>molecular modeling</kwd><kwd>X-ray analysis</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>антитела</kwd><kwd>молекулярное моделирование</kwd><kwd>рентгеноструктурный анализ</kwd><kwd>фуллерен</kwd></kwd-group><funding-group><funding-statement xml:lang="en">This work was supported by the Programme of the Presidium of the Russian Academy of Sciences No. 32 “Nanostructures: Physics, Chemistry, Biology, and Technology Basics”.</funding-statement><funding-statement xml:lang="ru">Работа выполнена при поддержке программы Президиума РАН № 32 «Наноструктуры: физика, химия, биология, основы технологий».</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>[1] Sundberg E.J., Mariuzza R.A. // Adv. 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