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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">vavilov</journal-id><journal-title-group><journal-title xml:lang="ru">Вавиловский журнал генетики и селекции</journal-title><trans-title-group xml:lang="en"><trans-title>Vavilov Journal of Genetics and Breeding</trans-title></trans-title-group></journal-title-group><issn pub-type="epub">2500-3259</issn><publisher><publisher-name>Institute of Cytology and Genetics of Siberian Branch of the RAS</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.18699/VJ15.101</article-id><article-id custom-type="elpub" pub-id-type="custom">vavilov-491</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>Компьютерное моделирование</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Computer Simulation</subject></subj-group></article-categories><title-group><article-title>Компьютерное моделирование пространственных структур пептидов из MUC 1, способных ингибировать апоптоз</article-title><trans-title-group xml:lang="en"><trans-title>Computer simulation of the spatial structure of MUC 1 peptides capable of inhibiting apoptosis</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Иванисенко</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Ivanisenko</surname><given-names>N. V.</given-names></name></name-alternatives><email xlink:type="simple">ivanisenko@bionet.nsc.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лаврик</surname><given-names>И. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Lavrik</surname><given-names>I. N.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Иванисенко</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Ivanisenko</surname><given-names>V. A.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Федеральное государственное бюджетное научное учреждение «Федеральный исследовательский центр Институт цитологии и генетики Сибирского отделения Российской академии наук», Новосибирск, Россия&#13;
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Федеральное государственное автономное образовательное учреждение высшего образования «Новосибирский национальный исследовательский государственный университет», Новосибирск, Россия<country>Россия</country></aff><aff xml:lang="en">Institute of Cytology and Genetics SB RA S, Novosibirsk, Russia&#13;
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Novosibirsk State University, Novosibirsk, Russia<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru">Федеральное государственное бюджетное научное учреждение «Федеральный исследовательский центр Институт цитологии и генетики Сибирского отделения Российской академии наук», Новосибирск, Россия&#13;
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Факультет прикладных исследований воспалительных процессов, Институт экспериментальной внутренней медицины, Университет Отто фон Гюрике, Магдебург, Германия<country>Россия</country></aff><aff xml:lang="en">Institute of Cytology and Genetics SB RA S, Novosibirsk, Russia&#13;
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Department of Translational Inflammation, Institute of Experimental Internal Medicine, Otto von Guericke University, Magdeburg, Germany<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru">Федеральное государственное бюджетное научное учреждение «Федеральный исследовательский центр Институт цитологии и генетики Сибирского отделения Российской академии наук», Новосибирск, Россия<country>Россия</country></aff><aff xml:lang="en">Institute of Cytology and Genetics SB RA S, Novosibirsk, Russia<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2015</year></pub-date><pub-date pub-type="epub"><day>05</day><month>01</month><year>2016</year></pub-date><volume>19</volume><issue>6</issue><fpage>731</fpage><lpage>737</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Иванисенко Н.В., Лаврик И.Н., Иванисенко В.А., 2016</copyright-statement><copyright-year>2016</copyright-year><copyright-holder xml:lang="ru">Иванисенко Н.В., Лаврик И.Н., Иванисенко В.А.</copyright-holder><copyright-holder xml:lang="en">Ivanisenko N.V., Lavrik I.N., Ivanisenko V.A.</copyright-holder><license 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://vavilov.elpub.ru/jour/article/view/491">https://vavilov.elpub.ru/jour/article/view/491</self-uri><abstract><p>Поиск эффективных ингибиторов апоптоза является актуальной задачей при создании лекарственных препаратов, в том числе направленных на лечение нейродегенеративных заболеваний. Инициация апоптоза осуществляется через образование макромолекулярных комплексов, в которых происходит активация каспаз – основных ферментов, ответственных за гибель клетки. Одним из таких макромолекулярных комплексов является комплекс DISC (Death-Inducing Signaling Complex – комплекс, индуцирующий смерть), который играет ключ евую роль при индукции так называемого внешнего пути апоптоза, в формировании которого центральное место занимает белок-адаптер FA DD (Fas-Associated Death Domain– Fas-ассоциированный домен смерти). Поэтому ингибиторы белка FA DD, препятствующие выполнению его функций в составе комплекса DISC, могут быть потенциальными лекарствами, подавляющими запуск апоптоза, а изучение молекулярного механизма их действия представляет высокий интерес для понимания функционирования путей передачи сигнала апоптоза. Известно, что одним из природных белков-ингибиторов FA DD является протеогликан MUC1 из группы муцинов. В частности, было установлено, что два пептида из первичной структуры цитоплазматического домена MUC1 (MUC1-CD, MUC1-cytoplasmic domain) также способны ингибировать связывание каспазы-8 c FA DD. Однако пространственная структура белка MUC1-CD до сих пор не расшифрована, что существенно усложняет рациональное конструирование потенциальных лекарств на основе данных пептидов. В связи с этим целью настоящей работы были компьютерное моделирование пространственных структур пептидов MUC1-CD, соответствующих фрагментам этого белка (1–20 и 46–72), а также анализ их конформационных свойств. Основное внимание в работе было уделено пептиду MUC1-CD (46–72), который способен связываться с FA DD. С использованием метода молекулярной динамики в неявной воде было показано, что пептид MUC1-CD (46–72) обладает конформацией, сходной с таковой у ряда участков домена DED (Death Effector Domain – эффекторный домен смерти) белка каспазы-8. Было обнаружено как минимум 4 участка белка каспазы-8, пространственную структуру которых может принимать пептид MUC1-CD (46–72). Полученные результаты показывают, что молекулярный механизм ингибирующей активности данного пептида может заключаться в конкурентном связывании с FA DD за счет структурного и конформационного сходства с белок-связывающими участками домена DED каспазы-8.</p></abstract><trans-abstract xml:lang="en"><p>Identification of new effective inhibitors of apoptosis is an important task for drug development for treatment of a number diseases including neurogenerative diseases. Initiation of apoptosis occurs via the formationof macromolecular protein complexes. In these complexes, activation of key enzymes in apoptosis, caspases, takes place. One of those macromolecular complexes is DISC (death- inducing signaling complex) playing a central role in the induction of the extrinsic apoptosis pathway. The adaptor protein FA DD has a major role in the formation of the DISC. Therefore, inhibitors of FA DD, preventing its function in the DISC, can act as potential drugs inhibiting apoptosis. Furthermore, the study of the mechanisms of action of these inhibitors is of great interest for understanding the mechanisms of the signal transduction pathways of apoptosis. It has been reported that a natural protein inhibitor of FA DD is mucin-type 1 glycoprotein (MUC1). In particular, two fragments of the primary structure of the cytoplasmic domain of MUC1 (MUC1- CD) are capable of inhibiting the binding of caspase-8 to FA DD. However, the three-dimensional structure of MUC1 has not been obtained yet. It complicates significantly the rational design of potential drugs on the basis of these peptides. In this context, the aim of the present study was in silico prediction ofthree-dimensional structures of MUC1-CD peptides corresponding to protein fragments (1-20 and 46-72), as well as analysis of their conformational properties. The main focus of the work was given to the peptide MUC1-CD (46-72), which is capable of binding to FA DD. Using the methods of molecular dynamics in the implicit water it was shown that the peptide MUC1-CD (46-72) can take conformations similar to the conformations of a number of fragments of the caspase-8 DED domain. It was found that  the structure of the peptide MUC1-CD (46-72) is similar to the spatial structure of at least four fragments of caspase-8. These results indicate that the molecular mechanism of the inhibitory activity of the peptide can be explained by competitive binding with FA DD due to the structural and conformational similarity with the fragments of the caspase-8 DED domain.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>апоптоз</kwd><kwd>программируемая клеточная гибель</kwd><kwd>FA DD</kwd><kwd>MUC1</kwd><kwd>каспаза-8</kwd><kwd>молекулярная динамика</kwd><kwd>неявная вода</kwd><kwd>обобщенная модель Борна</kwd><kwd>предсказание структуры белка</kwd></kwd-group><kwd-group xml:lang="en"><kwd>apoptosis</kwd><kwd>programmed cell death</kwd><kwd>FA DD</kwd><kwd>MUC1</kwd><kwd>caspase-8</kwd><kwd>molecular dynamics</kwd><kwd>implicit salvation</kwd><kwd>Generalized Born model</kwd><kwd>protein structure prediction</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Agata N., Ahmad R., Kawano T., Raina D., Kharbanda S., Kufe D. 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