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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">55001</article-id>
   <article-id pub-id-type="doi">10.29039/rusjbpc.2022.0502</article-id>
   <article-categories>
    <subj-group subj-group-type="toc-heading" xml:lang="ru">
     <subject>Общая биофизика</subject>
    </subj-group>
    <subj-group subj-group-type="toc-heading" xml:lang="en">
     <subject>General biophysics</subject>
    </subj-group>
    <subj-group>
     <subject>Общая биофизика</subject>
    </subj-group>
   </article-categories>
   <title-group>
    <article-title xml:lang="en">MOLECULAR MODELLİNG OF CONFORMATİONAL FLEXİBİLİTY OF HYLAMBATİN MOLECULE</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Молекулярное моделирование конформационной подвижности молекулы гиламбатина</trans-title>
    </trans-title-group>
   </title-group>
   <contrib-group content-type="authors">
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Агаева</surname>
       <given-names>Г. А.</given-names>
      </name>
      <name xml:lang="en">
       <surname>Agaeva</surname>
       <given-names>G. A.</given-names>
      </name>
     </name-alternatives>
     <email>gulshen@mail.ru</email>
     <xref ref-type="aff" rid="aff-1"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Сафарли</surname>
       <given-names>Г. Р.</given-names>
      </name>
      <name xml:lang="en">
       <surname>Safarli</surname>
       <given-names>G. R.</given-names>
      </name>
     </name-alternatives>
     <xref ref-type="aff" rid="aff-2"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Годжаев</surname>
       <given-names>Н. М.</given-names>
      </name>
      <name xml:lang="en">
       <surname>Godjaev</surname>
       <given-names>N. M.</given-names>
      </name>
     </name-alternatives>
     <xref ref-type="aff" rid="aff-3"/>
    </contrib>
   </contrib-group>
   <aff-alternatives id="aff-1">
    <aff>
     <institution xml:lang="ru">Бакинский государственный университет</institution>
     <city>Баку</city>
     <country>Азербайджан</country>
    </aff>
    <aff>
     <institution xml:lang="en">Baku State University</institution>
     <city>Baku</city>
     <country>Azerbaijan</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-2">
    <aff>
     <institution xml:lang="ru">Бакинский государственный университет</institution>
     <city>Баку</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Baku State University</institution>
     <city>Baku</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-3">
    <aff>
     <institution xml:lang="ru">Бакинский государственный университет</institution>
     <city>Баку</city>
     <country>Азербайджан</country>
    </aff>
    <aff>
     <institution xml:lang="en">Baku State University</institution>
     <city>Baku</city>
     <country>Azerbaijan</country>
    </aff>
   </aff-alternatives>
   <pub-date publication-format="print" date-type="pub" iso-8601-date="2022-06-25T20:22:29+03:00">
    <day>25</day>
    <month>06</month>
    <year>2022</year>
   </pub-date>
   <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2022-06-25T20:22:29+03:00">
    <day>25</day>
    <month>06</month>
    <year>2022</year>
   </pub-date>
   <volume>7</volume>
   <issue>2</issue>
   <fpage>194</fpage>
   <lpage>198</lpage>
   <history>
    <date date-type="received" iso-8601-date="2022-06-20T20:22:29+03:00">
     <day>20</day>
     <month>06</month>
     <year>2022</year>
    </date>
    <date date-type="accepted" iso-8601-date="2022-06-20T20:22:29+03:00">
     <day>20</day>
     <month>06</month>
     <year>2022</year>
    </date>
   </history>
   <self-uri xlink:href="https://rusjbpc.ru/en/nauka/article/55001/view">https://rusjbpc.ru/en/nauka/article/55001/view</self-uri>
   <abstract xml:lang="ru">
    <p>Методами молекулярной механики и молекулярной динамики были исследованы особенности пространственной организации молекулы гиламбатина. Гиламбатин состоит из двенадцати аминокислотных остатков в последовательности: Asp-Pro-Pro-Asp-Pro-Asn-Arg-Phe-Tyr-Gly-Met-Met-NH2. В отличие от всех других тахикининов, гиламбатин имеет остаток Met, заменяющий обычный Leu в предпоследнем положении. Тахикининовый пептид гиламбатин был выделен и химически охарактеризован из метанольных экстрактов кожи Hylambates maculatus, африканской лягушки-ракофориды. Было показано, что вводимый внутривенно гиламбатин значительно повышает уровень глюкозы и инсулина в плазме крови. В данной работе было проведено исследование конформационной подвижности молекулы гиламбатина методами молекулярной механики и молекулярной динамики. При конформационном расчете пептида учитывали невалентные и электростатические взаимодействия, водородные связи и торсионные потенциалы. На основе фрагментарного анализа были определены стабильные пространственные структуры додекапептида гиламбатина, которые могут быть представлены в виде набора конформаций, характеризующихся относительно лабильным N-концевым тетрапептидом и конформационно жестким. С-концевым октапептидом. В рассчитанных стабильных конформационных соcтояниях были уточнены и энергетически оценены эффективные взаимодействия боковых цепей остатков и водородные связи. Показано, что молекула гиламбатина предпочтительно формирует практически изоэнергетичные конформации с различными структурными типами на N-конце пептидной цепи, переходящими в виток альфа-спирали на С-конце [2]. Методом молекулярной динамики была смоделирована картина внутримолекулярной подвижности стабильных конформаций молекулы гиламбатина как в вакууме, так и в окружении молекул воды. На основе рассчитанных значений двугранных углов были построены молекулярные модели энергетически предпочтительных конформационных состояний додекапептида гиламбатина.</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>The features of the spatial organization of the hylambatin molecule were investigated by methods of molecular mechanics and molecular dynamics. Hylambatin consists of twelve amino acid residues in the sequence: Asp-Pro-Pro-Asp-Pro-Asn-Arg-Phe-Tyr-Gly-Met-Met-NH2. Unlike all other tachykinins, hylambatin has a Met residue replacing the usual Leu at penultimate position. The tachykinin peptide hylambatin has been isolated and chemically characterized from methanol extracts of the skin of Hylambates maculatus, an African rhacophorid frog. It has been shown that intravenously administered hylambatin significantly increases the level of glucose and insulin in blood plasma. In this paper, the conformational flexibility of the hylambatin molecule was studied by methods of molecular mechanics and molecular dynamics. The conformational calculation of the peptide took into account non-valent and electrostatic interactions, hydrogen bonds and torsion potentials. Based on fragmentary analysis, stable spatial structures of the hylambatin dodecapeptide were determined, which can be represented as a set of conformations characterized by a relatively labile N-terminal tetrapeptide and a conformationally rigid C-terminal octapeptide. In the calculated stable conformational states, the effective interactions of the side chains of residues and hydrogen bonds were refined and energetically evaluated. It has been shown that the hylambatin molecule preferably forms practically isoenergetic conformations with various structural types at the N-end of the peptide chain, passing into the alpha helix at the C-end. By the method of molecular dynamics, the pattern of intramolecular mobility of stable conformations of the hylambatin molecule was modeled both in vacuum and surrounded by water molecules. Based on the calculated values of the dihedral angles, molecular models of energetically preferred conformational states of the hylambatin dodecapeptide were constructed.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>гиламбатин</kwd>
    <kwd>тахикинин</kwd>
    <kwd>конформация</kwd>
    <kwd>молекулярная механика</kwd>
    <kwd>молекулярная динамика</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>: hylambatin</kwd>
    <kwd>tachykinin</kwd>
    <kwd>conformation</kwd>
    <kwd>molecular mechanics</kwd>
    <kwd>molecular dynamics simulation</kwd>
   </kwd-group>
  </article-meta>
 </front>
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  <p></p>
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