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 <front>
  <journal-meta>
   <journal-id journal-id-type="publisher-id">Russian Journal of Biological Physics and Chemisrty</journal-id>
   <journal-title-group>
    <journal-title xml:lang="en">Russian Journal of Biological Physics and Chemisrty</journal-title>
    <trans-title-group xml:lang="ru">
     <trans-title>АКТУАЛЬНЫЕ ВОПРОСЫ БИОЛОГИЧЕСКОЙ ФИЗИКИ И ХИМИИ</trans-title>
    </trans-title-group>
   </journal-title-group>
   <issn publication-format="print">2499-9962</issn>
  </journal-meta>
  <article-meta>
   <article-id pub-id-type="publisher-id">54701</article-id>
   <article-categories>
    <subj-group subj-group-type="toc-heading" xml:lang="ru">
     <subject>МЕДИЦИНСКАЯ БИОФИЗИКА И БИОФИЗИЧЕСКАЯ ХИМИЯ</subject>
    </subj-group>
    <subj-group subj-group-type="toc-heading" xml:lang="en">
     <subject>MEDICAL BIOPHYSICS AND BIOPHYSICAL CHEMISTRY</subject>
    </subj-group>
    <subj-group>
     <subject>МЕДИЦИНСКАЯ БИОФИЗИКА И БИОФИЗИЧЕСКАЯ ХИМИЯ</subject>
    </subj-group>
   </article-categories>
   <title-group>
    <article-title xml:lang="en">In silico study of amino acid composition of papaine binding sites with different natural inhibitors</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>In silico исследование аминокислотного состава участков связывания папаина с ингибиторами различной природы</trans-title>
    </trans-title-group>
   </title-group>
   <contrib-group content-type="authors">
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Сакибаев</surname>
       <given-names>Ф А</given-names>
      </name>
      <name xml:lang="en">
       <surname>Sakibaev</surname>
       <given-names>F A</given-names>
      </name>
     </name-alternatives>
     <email>farkhatlukum@gmail.com</email>
     <xref ref-type="aff" rid="aff-1"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Холявка</surname>
       <given-names>М Г</given-names>
      </name>
      <name xml:lang="en">
       <surname>Holyavka</surname>
       <given-names>M G</given-names>
      </name>
     </name-alternatives>
     <email>holyavka@rambler.ru</email>
     <xref ref-type="aff" rid="aff-2"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Нехаев</surname>
       <given-names>И С</given-names>
      </name>
      <name xml:lang="en">
       <surname>Nekhaev</surname>
       <given-names>I S</given-names>
      </name>
     </name-alternatives>
     <xref ref-type="aff" rid="aff-3"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Артюхов</surname>
       <given-names>В. Г.</given-names>
      </name>
      <name xml:lang="en">
       <surname>Artyukhov</surname>
       <given-names>V. G.</given-names>
      </name>
     </name-alternatives>
     <xref ref-type="aff" rid="aff-4"/>
    </contrib>
   </contrib-group>
   <aff-alternatives id="aff-1">
    <aff>
     <institution xml:lang="ru">Воронежский государственный университет</institution>
     <country>ru</country>
    </aff>
    <aff>
     <institution xml:lang="en">Voronezh State University</institution>
     <country>ru</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-2">
    <aff>
     <institution xml:lang="ru">Воронежский государственный университет; Севастопольский государственный университет</institution>
     <country>ru</country>
    </aff>
    <aff>
     <institution xml:lang="en">Voronezh State University; Sevastopol State University</institution>
     <country>ru</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-3">
    <aff>
     <institution xml:lang="ru">Воронежский государственный университет</institution>
     <country>ru</country>
    </aff>
    <aff>
     <institution xml:lang="en">Voronezh State University</institution>
     <country>ru</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-4">
    <aff>
     <institution xml:lang="ru">Воронежский государственный университет</institution>
     <city>Воронеж</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Voronezh State University</institution>
     <city>Voronezh</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <pub-date publication-format="print" date-type="pub" iso-8601-date="2021-12-25T20:22:29+03:00">
    <day>25</day>
    <month>12</month>
    <year>2021</year>
   </pub-date>
   <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2021-12-25T20:22:29+03:00">
    <day>25</day>
    <month>12</month>
    <year>2021</year>
   </pub-date>
   <volume>6</volume>
   <issue>4</issue>
   <fpage>612</fpage>
   <lpage>615</lpage>
   <history>
    <date date-type="received" iso-8601-date="2021-12-20T20:22:29+03:00">
     <day>20</day>
     <month>12</month>
     <year>2021</year>
    </date>
    <date date-type="accepted" iso-8601-date="2021-12-20T20:22:29+03:00">
     <day>20</day>
     <month>12</month>
     <year>2021</year>
    </date>
   </history>
   <self-uri xlink:href="https://rusjbpc.ru/en/nauka/article/54701/view">https://rusjbpc.ru/en/nauka/article/54701/view</self-uri>
   <abstract xml:lang="ru">
    <p>Цистеиновые протеазы имеют широкое распространение в природе, являются значимым звеном в физиолого-биохимических процессах во всех живых организмах. Точный контроль их протеолитической активности необходим для правильного функционирования целых клеток и организмов. В работе исследуются взаимодействия папаина с ингибиторами различной природы. Аминокислотный состав участков связывания определяли с помощью программы LigPlot. Выявлены аминокислотные остатки, непосредственно контактирующие с анализируемыми соединениями. Показано наличие как гидрофобных взаимодействий, так и водородных связей. Последние формируются в количестве: 4 с метиловым эфиром N - трет -бутилоксикарбонил-фенил-глицина с участием 3 аминокислотных остатков; 3 с сукцинил-Gln-Val-Val-Ala-Ala- p -нитроанилидом и локсистатиновой кислотой (E64-c) с участием 3 остатков; 2 с хлорметилкетоном с участием одного остатка. В реализации гидрофобных взаимодействий с локсистатиновой кислотой участвуют 10 аминокислотных остатков, по 13 с метиловым эфиром N - трет -бутилоксикарбонил-фенил-глицина, хлорметилкетоном и сукцинил-Gln-Val-Val-Ala-Ala- p -нитроанилидом. Установлено, что в случае связывания папаина с сукцинил-Gln-Val-Val-Ala-Ala- p -нитроанилидом не происходит перекрывания аминокислот активного центра, что может указывать на ингибирование фермента данным соединением посредством изменения пространственной структуры биокатализатора. Представленные в работе данные могут быть использованы при изучении характера взаимодействия папаин-подобных цистеиновых протеаз с их ингибиторами.</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>Cysteine proteases are widespread in nature, as well as they are an important link in physiological and biochemical processes in all living organisms. Precise control of their proteolytic activity is essential for the proper functioning of whole cells and organisms. The work investigated the interaction of papain with inhibitors of various natures. The amino acid composition of the binding sites was determined using the LigPlot software. Amino acid residues that are in direct contact with the analyzed compounds have been identified. The presence of both hydrophobic interactions and hydrogen bonds was shown. The latter are formed in the following amounts: 4 with methyl ester of N - tert -butyloxycarbonyl-phenyl-glycine with the participation of 3 amino acid residues; 3 with succinyl-Gln-Val-Val-Ala-Ala- p -nitroanilide and loxystatinic acid (E64-c) with the participation of 3 residues; 2 with chloromethyl ketone with the participation of one residue. In the implementation of hydrophobic interactions with loxystatinic acid, 10 amino acid residues are involved, 13 amino acid residues each with N - tert -butyloxycarbonyl-phenyl-glycine methyl ester, chloromethyl ketone and succinyl-Gln-Val-Val-Ala-Ala- p -nitroanilide. It was found that in the case of binding of papain to succinyl-Gln-Val-Val-Ala-Ala- p -nitroanilide, no overlapping of the amino acids of the active center occurs, which may indicate inhibition of the enzyme by this compound by changing the spatial structure of the biocatalyst. The data presented in this work can be used to study the nature of the interaction of papain-like cysteine proteases with their inhibitors.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>папаин</kwd>
    <kwd>ингибиторы</kwd>
    <kwd>аминокислотный состав</kwd>
    <kwd>in silico анализ</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>papain</kwd>
    <kwd>inhibitors</kwd>
    <kwd>amino acid composition</kwd>
    <kwd>in silico analysis</kwd>
   </kwd-group>
   <funding-group>
    <funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке в форме гранта Президента Российской Федерации для государственной поддержки молодых российских ученых - докторов наук МД-1982.2020.4. Соглашение 075-15-2020-325.</funding-statement>
   </funding-group>
  </article-meta>
 </front>
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