<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE root>
<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">10329</article-id><article-id pub-id-type="doi">10.32607/20758251-2018-10-4-121-124</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Short communications</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Краткие сообщения</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">The Preferable Binding Pose of Canonical Butyrylcholinesterase Substrates Is Unproductive for Echothiophate</article-title><trans-title-group xml:lang="ru"><trans-title>Предпочтительная конформация связывания канонических субстратов бутирилхолинэстеразы непродуктивна для экотиофата</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Zlobin</surname><given-names>A. S.</given-names></name><name xml:lang="ru"><surname>Злобин</surname><given-names>A. С.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>aozalevsky@fbb.msu.ru</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>Zalevsky</surname><given-names>A. O.</given-names></name><name xml:lang="ru"><surname>Залевский</surname><given-names>A. O.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>aozalevsky@fbb.msu.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Mokrushina</surname><given-names>Yu. A.</given-names></name><name xml:lang="ru"><surname>Мокрушина</surname><given-names>Ю. A.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>aozalevsky@fbb.msu.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kartseva</surname><given-names>O. V.</given-names></name><name xml:lang="ru"><surname>Карцева</surname><given-names>O. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>aozalevsky@fbb.msu.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Golovin</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Головин</surname><given-names>A. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>aozalevsky@fbb.msu.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Smirnov</surname><given-names>I. V.</given-names></name><name xml:lang="ru"><surname>Смирнов</surname><given-names>И. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>aozalevsky@fbb.msu.ru</email><xref ref-type="aff" rid="aff5"/><xref ref-type="aff" rid="aff6"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Lomonosov Moscow State University</institution></aff><aff><institution xml:lang="ru">Московский государственный университет им. М.В. Ломоносова, факультет биоинженерии и биоинформатики</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry RAS</institution></aff><aff><institution xml:lang="ru">Институт биоорганической химии им. академиков М.М. Шемякина и Ю.А. Овчинникова РАН</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Institute of Molecular Medicine</institution></aff><aff><institution xml:lang="ru">Институт молекулярной медицины, Первый МГМУ им. И.М. Сеченова</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">National Research University HSE</institution></aff><aff><institution xml:lang="ru">Институт биоорганической химии им. академиков М.М. Шемякина и Ю.А. Овчинникова РАН</institution></aff></aff-alternatives><aff-alternatives id="aff5"><aff><institution xml:lang="en">Lomonosov Moscow State University</institution></aff><aff><institution xml:lang="ru">Национальный исследовательский университет «Высшая школа экономики»</institution></aff></aff-alternatives><aff-alternatives id="aff6"><aff><institution xml:lang="en">Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry RAS</institution></aff><aff><institution xml:lang="ru">Московский государственный университет им. М.В. Ломоносова</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2018-12-15" publication-format="electronic"><day>15</day><month>12</month><year>2018</year></pub-date><volume>10</volume><issue>4</issue><issue-title xml:lang="en">VOL 10, NO4 (2018)</issue-title><issue-title xml:lang="ru">ТОМ 10, №4 (2018)</issue-title><fpage>121</fpage><lpage>124</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 ©; 2018, Zlobin A.S., Zalevsky A.O., Mokrushina Y.A., Kartseva O.V., Golovin A.V., Smirnov I.V.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2018, Злобин A.С., Залевский A.O., Мокрушина Ю.A., Карцева O.В., Головин A.В., Смирнов И.В.</copyright-statement><copyright-year>2018</copyright-year><copyright-holder xml:lang="en">Zlobin A.S., Zalevsky A.O., Mokrushina Y.A., Kartseva O.V., Golovin A.V., Smirnov I.V.</copyright-holder><copyright-holder xml:lang="ru">Злобин A.С., Залевский A.O., Мокрушина Ю.A., Карцева O.В., Головин A.В., Смирнов И.В.</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/10329">https://actanaturae.ru/2075-8251/article/view/10329</self-uri><abstract xml:lang="en"><p>In this paper, we, for the first time, describe the interaction between the butyrylcholinesterase enzyme and echothiophate, a popular model compound and an analogue of the chemical warfare agents VX and VR, at the atomistic level. Competition between the two echothiophate conformations in the active site was found using molecular modeling techniques. The first one is close to the mode of binding of the substrates of choline series (butyrylcholine and butyrylthiocholine) and is inhibitory, since it is unable to react with the enzyme. The second one is characterized by a significantly worse estimated binding affinity and is reactive. Thus, echothiophate combines the features of two types of inhibitors: competitive and suicidal. This observation will help clarify the kinetic reaction scheme in order to accurately assess the kinetic constants, which is especially important when designing new butyrylcholinesterase variants capable of full-cycle hydrolysis of organophosphorus compounds.</p></abstract><trans-abstract xml:lang="ru"><p>Впервые на атомистическом уровне описано взаимодействие фермента бутирилхолинэстеразы с экотиофатом - популярным модельным соединением, аналогом боевых отравляющих веществ VX и VR. При помощи методов молекулярного моделирования обнаружена конкуренция между двумя конформациями экотиофата в активном центре. Первая, близкая к конформации для способа связывания субстратов холинового ряда - бутирилхолина и бутирилтиохолина, - является ингибирующей, так как не способна к реакции с ферментом; вторая, реакционноспособная, обладает существенно худшей оценкой энергии связывания. Таким образом, экотиофат совмещает черты ингибиторов двух типов: конкурентного и суицидального. Данное наблюдение поможет уточнить кинетическую схему реакции для аккуратной оценки кинетических констант, что особенно важно при дизайне новых вариантов бутирилхолинэстеразы, способных к полному циклу гидролиза фосфорорганических соединений.</p></trans-abstract><kwd-group xml:lang="en"><kwd>butyrylcholinesterase</kwd><kwd>echothiophate</kwd><kwd>organophosphates</kwd><kwd>QM/MM</kwd><kwd>metadynamics</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>бутирилхолинэстераза</kwd><kwd>КМ/ММ</kwd><kwd>метадинамика</kwd><kwd>органофосфаты</kwd><kwd>экотиофат</kwd></kwd-group><funding-group><funding-statement xml:lang="en">The study was supported by the Russian Science Foundation, grant No. 14-50-00131. All calculations were carried out on the resources of the Supercomputer Center of the Lomonosov Moscow State University supported by the project RFMEFI62117X0011.</funding-statement><funding-statement xml:lang="ru">Исследование поддержано грантом РНФ № 14-50-00131. Все вычисления проводились на ресурсах суперкомпьютерного центра МГУ им. М.В. Ломоносова, поддержанных проектом RFMEFI62117X0011.</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>[1] Ilyushin D.G., Smirnov I.V., Belogurov A.A. Jr., Dyachenko I.A., Zharmukhamedova T.I., Novozhilova T.I., Bychikhin E.A., Serebryakova M.V., Kharybin O.N., Murashev A.N. // Proc. Natl. Acad. Sci. USA. 2013, V.110, P.1243-1248</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>[2] Terekhov S.S., Smirnov I.V., Shamborant O.G., Bobik T.V., Ilyushin D.G., Murashev A.N., Dyachenko I.A., Palikov V.A., Knorre V.D., Belogurov A.A. // Acta Naturae. 2015, V.7, P.136-141</mixed-citation></ref><ref id="B3"><label>3.</label><mixed-citation>[3] Bevc S., Konc J., Stojan J., Hodošček M., Penca M., Praprotnik M., Janežič D. // PLoS One. 2011, V.6, e22265</mixed-citation></ref><ref id="B4"><label>4.</label><mixed-citation>[4] Chen X., Fang L., Liu J., Zhan C.G. // Biochemistry. 2012, V.51, P.1297-1305</mixed-citation></ref><ref id="B5"><label>5.</label><mixed-citation>[5] Zheng F., Xue L., Hou S., Liu J., Zhan M., Yang W., Zhan C.G. // Nature Comm. 2014, V.5, P.3457</mixed-citation></ref><ref id="B6"><label>6.</label><mixed-citation>[6] Trott O., Olson A.J. // J. Comp. Chem. 2010, V.31, P.455-461</mixed-citation></ref><ref id="B7"><label>7.</label><mixed-citation>[7] Hanwell M.D., Curtis D.E., Lonie D.C., Vandermeersch T., Zurek E., Hutchison G.R. // J. Cheminform. 2012, V.4, P.17</mixed-citation></ref><ref id="B8"><label>8.</label><mixed-citation>[8] Morris G.M., Huey R., Lindstrom W., Sanner M.F., Belew R.K., Goodsell D.S., Olson A.J. // J. Comp. Chem. 2009, V.30, P.2785-2791</mixed-citation></ref><ref id="B9"><label>9.</label><mixed-citation>[9] Zlobin A., Mokrushina Y., Terekhov S., Zalevsky A., Bobik T., Stepanova A., Aliseychik M., Kartseva O., Panteleev S., Golovin A. // Front. Pharmacol. 2018, V.9, P.834</mixed-citation></ref><ref id="B10"><label>10.</label><mixed-citation>[10] Nachon F., Ehret-Sabatier L., Loew D., Colas C., van Dorsselaer A., Goeldner M. // Biochemistry. 1998, V.37, P.10507-10513</mixed-citation></ref><ref id="B11"><label>11.</label><mixed-citation>[11] Nachon F., Asojo O.A., Borgstahl G.E.O., Masson P., Lockridge O. // Biochemistry. 2005, V.44, P.1154-1162</mixed-citation></ref><ref id="B12"><label>12.</label><mixed-citation>[12] Masson P., Froment M.T., Bartels C.F., Lockridge O. // Biochem. J. 1997, V.325, Pt1, P.53-61</mixed-citation></ref></ref-list></back></article>
