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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">10572</article-id><article-id pub-id-type="doi">10.32607/20758251-2013-5-4-62-70</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">3D Structure Modeling of Alpha-Amino Acid Ester Hydrolase from Xanthomonas rubrilineans</article-title><trans-title-group xml:lang="ru"><trans-title>Моделирование трехмерной структуры гидролазы эфиров альфа-аминокислот из Xanthomonas rubrilineans</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Zarubina</surname><given-names>S. A.</given-names></name><name xml:lang="ru"><surname>Зарубина</surname><given-names>С. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>vitishkov@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>Uporov</surname><given-names>I. V.</given-names></name><name xml:lang="ru"><surname>Упоров</surname><given-names>И. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>vitishkov@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Fedorchuk</surname><given-names>E. A.</given-names></name><name xml:lang="ru"><surname>Федорчук</surname><given-names>Е. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>vitishkov@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>Fedorchuk</surname><given-names>V. V.</given-names></name><name xml:lang="ru"><surname>Федорчук</surname><given-names>В. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>vitishkov@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>Sklyarenko</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Скляренко</surname><given-names>А. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>vitishkov@gmail.com</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Yarotsky</surname><given-names>S. V.</given-names></name><name xml:lang="ru"><surname>Яроцкий</surname><given-names>С. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>vitishkov@gmail.com</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Tishkov</surname><given-names>V. I.</given-names></name><name xml:lang="ru"><surname>Тишков</surname><given-names>В. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>vitishkov@gmail.com</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/><xref ref-type="aff" rid="aff4"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Department of Chemical Enzymology, Faculty of Chemistry, M.V. Lomonosov Moscow State University</institution></aff><aff><institution xml:lang="ru">Химический факультет Московского государственного университета им. М.В. Ломоносова</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Innovations and High Technologies MSU Ltd</institution></aff><aff><institution xml:lang="ru">ООО «Инновации и высокие технологии МГУ»</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">State Research Institute for Genetics and Selection of Industrial Microorganisms (GosNIIgenetika)</institution></aff><aff><institution xml:lang="ru">Государственный научно-исследовательский институт генетики и селекции промышленных микроорганизмов (ГосНИИгенетика)</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">A.N. Bach Institute of Biochemistry, Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Институт биохимии им. А.Н. Баха РАН</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2013-12-15" publication-format="electronic"><day>15</day><month>12</month><year>2013</year></pub-date><volume>5</volume><issue>4</issue><issue-title xml:lang="en">VOL 5, NO4 (2013)</issue-title><issue-title xml:lang="ru">ТОМ 5, №4 (2013)</issue-title><fpage>62</fpage><lpage>70</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 ©; 2013, Zarubina S.A., Uporov I.V., Fedorchuk E.A., Fedorchuk V.V., Sklyarenko A.V., Yarotsky S.V., Tishkov V.I.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2013, Зарубина С.А., Упоров И.В., Федорчук Е.А., Федорчук В.В., Скляренко А.В., Яроцкий С.В., Тишков В.И.</copyright-statement><copyright-year>2013</copyright-year><copyright-holder xml:lang="en">Zarubina S.A., Uporov I.V., Fedorchuk E.A., Fedorchuk V.V., Sklyarenko A.V., Yarotsky S.V., Tishkov V.I.</copyright-holder><copyright-holder xml:lang="ru">Зарубина С.А., Упоров И.В., Федорчук Е.А., Федорчук В.В., Скляренко А.В., Яроцкий С.В., Тишков В.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/10572">https://actanaturae.ru/2075-8251/article/view/10572</self-uri><abstract xml:lang="en"><p>Alpha-amino acid ester hydrolase (EC 3.1.1.43, AEH) is a promising biocatalyst for the production of semi-synthetic β-lactam antibiotics, penicillins and cephalosporins. The AEH gene from Xanthomonas rubrilineans (XrAEH) was recently cloned in this laboratory. The three-dimensional structure of XrAEH was simulated using the homology modeling method for rational design experiments. The analysis of the active site was performed, and its structure was specified. The key amino acid residues in the active site - the catalytic triad (Ser175, His341 and Asp308), oxyanion hole (Tyr83 and Tyr176), and carboxylate cluster (carboxylate groups of Asp209, Glu310 and Asp311) - were identified. It was shown that the optimal configuration of residues in the active site occurs with a negative net charge -1 in the carboxylate cluster. Docking of different substrates in the AEH active site was carried out, which allowed us to obtain structures of XrAEH complexes with the ampicillin, amoxicillin, cephalexin, D-phenylglycine, and 4-hydroxy-D-phenylglycine methyl ester. Modeling of XrAEH enzyme complexes with various substrates was used to show the structures for whose synthesis this enzyme will show the highest efficiency.</p></abstract><trans-abstract xml:lang="ru"><p>Гидролаза эфиров альфа-аминокислот (AEH, [КФ 3.1.1.43]) является перспективным биокатализатором синтеза β-лактамных антибиотиков – как пенициллинов, так и цефалоспоринов. Ранее в нашей лаборатории был клонирован ген AEH из Xanthomonas rubrilineans (XrAEH). В представленной работе с целью рационального дизайна XrAEH методом гомологичного моделирования построена структура этого фермента и проведен анализ его активного центра. Идентифицированы остатки, образующие каталитическую триаду (Ser175, His341 и Asp308), а также остатки, входящие в оксианионный центр (Tyr83 и Tyr176) и карбоксилатный кластер (карбоксильные группы остатков Asp311, Asp209 и Glu310). Показано, что оптимальная конформация остатков каталитической триады реализуется при суммарном заряде карбоксилатного кластера, равного –1. С помощью докинга получены структуры комплексов XrAEH с ампициллином, амоксициллином, цефалексином, метиловыми эфирами D-фенилглицина и 4-окси-D-фенилглицина. С помощью моделирования комплексов фермента с различными субстратами проведен анализ полученных структур и определен ряд антибиотиков, при синтезе которых фермент XrAEH будет наиболее эффективен.</p></trans-abstract><kwd-group xml:lang="en"><kwd>alpha-amino acid ester hydrolase</kwd><kwd>Xanthomonas</kwd><kwd>rubrilineans</kwd><kwd>computer simulation</kwd><kwd>docking</kwd><kwd>enzymatic synthesis of antibiotics</kwd><kwd>protein engineering</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>гидролаза эфиров альфа-аминокислот</kwd><kwd>Xanthomonas rubrilineans</kwd><kwd>компьютерное моделирование</kwd><kwd>докинг</kwd><kwd>ферментативный синтез антибиотиков</kwd><kwd>белковая инженерия</kwd></kwd-group><funding-group><funding-statement xml:lang="en">This study was supported by the Ministry of Education and Sciences of the Russian Federation (State contract № 14.512.11.0066) and the Russian Foundation for Basic Research (grant number 11-04-00962-a).</funding-statement><funding-statement xml:lang="ru">Работа поддержана Министерством образования и науки РФ (госконтракт № 14.512.11.0066) и РФФИ (грант № 11-04-00962-а).</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>[1] Elander R.P. // Appl. 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