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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">54180</article-id>
   <article-categories>
    <subj-group subj-group-type="toc-heading" xml:lang="ru">
     <subject>МОЛЕКУЛЯРНАЯ БИОФИЗИКА И ФИЗИКА БИОМОЛЕКУЛ</subject>
    </subj-group>
    <subj-group subj-group-type="toc-heading" xml:lang="en">
     <subject>MOLECULAR BIOPHYSICS AND PHYSICS OF BIOMOLECULES</subject>
    </subj-group>
    <subj-group>
     <subject>МОЛЕКУЛЯРНАЯ БИОФИЗИКА И ФИЗИКА БИОМОЛЕКУЛ</subject>
    </subj-group>
   </article-categories>
   <title-group>
    <article-title xml:lang="en">The role of lipid environment in dimerization of protein helical transmembrane domains</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Роль липидного окружения в димеризации спиральных трансмембранных доменов белков</trans-title>
    </trans-title-group>
   </title-group>
   <contrib-group content-type="authors">
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Кузнецов</surname>
       <given-names>А С</given-names>
      </name>
      <name xml:lang="en">
       <surname>Kuznetsov</surname>
       <given-names>A S</given-names>
      </name>
     </name-alternatives>
     <email>andrej.kuznecov@phystech.edu</email>
     <xref ref-type="aff" rid="aff-1"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Ефремов</surname>
       <given-names>Р Г</given-names>
      </name>
      <name xml:lang="en">
       <surname>Efremov</surname>
       <given-names>R G</given-names>
      </name>
     </name-alternatives>
     <xref ref-type="aff" rid="aff-2"/>
    </contrib>
   </contrib-group>
   <aff-alternatives id="aff-1">
    <aff>
     <institution xml:lang="ru">Институт биоорганической химии им. акад. М.М. Шемякина и Ю.А. Овчинникова РАН; Национальный исследовательский университет «Высшая школа экономики»</institution>
     <country>ru</country>
    </aff>
    <aff>
     <institution xml:lang="en">M.M. Shemyakin and Yu.A. Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences; National Research University Higher School of Economics</institution>
     <country>ru</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-2">
    <aff>
     <institution xml:lang="ru">Институт биоорганической химии им. акад. М.М. Шемякина и Ю.А. Овчинникова РАН; Национальный исследовательский университет «Высшая школа экономики»</institution>
     <country>ru</country>
    </aff>
    <aff>
     <institution xml:lang="en">M.M. Shemyakin and Yu.A. Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences; National Research University Higher School of Economics</institution>
     <country>ru</country>
    </aff>
   </aff-alternatives>
   <pub-date publication-format="print" date-type="pub" iso-8601-date="2017-06-25T20:22:29+03:00">
    <day>25</day>
    <month>06</month>
    <year>2017</year>
   </pub-date>
   <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2017-06-25T20:22:29+03:00">
    <day>25</day>
    <month>06</month>
    <year>2017</year>
   </pub-date>
   <volume>2</volume>
   <issue>1</issue>
   <fpage>313</fpage>
   <lpage>317</lpage>
   <history>
    <date date-type="received" iso-8601-date="2017-06-20T20:22:29+03:00">
     <day>20</day>
     <month>06</month>
     <year>2017</year>
    </date>
    <date date-type="accepted" iso-8601-date="2017-06-20T20:22:29+03:00">
     <day>20</day>
     <month>06</month>
     <year>2017</year>
    </date>
   </history>
   <self-uri xlink:href="https://rusjbpc.ru/en/nauka/article/54180/view">https://rusjbpc.ru/en/nauka/article/54180/view</self-uri>
   <abstract xml:lang="ru">
    <p>Трансмембранные домены большинства мембранных белков представляют собой отдельные α-спирали или их пучки. Они принимают непосредственное участие в функционировании мембранных рецепторов и ионных каналов, а также обеспечивают формирование их правильной пространственной структуры. Таким образом, спираль-спиральные взаимодействия в липидном окружении вовлечены в ключевые процессы жизнедеятельности клетки. На смену концепции мотивов димеризации, описывающей взаимодействие белков в мембране исключительно через непосредственные контакты, пришло представление о мембране как об активной среде, влияющей на поведение встроенных белков. В настоящей работе с помощью метода молекулярной динамики исследовали поведение трансмембранного сегмента гликофорина А и двух искусственных полипептидов на базе полиаланина и полилейцина в гидратированном липидном бислое. Показали, что мономеры и образуемые димеры имеют на поверхности спиральных трансмембранных фрагментов сайты взаимодействия с молекулами липидов. Для мономера гликофорина А наиболее ярко выраженный сайт связывания липидов соответствует интерфейсу его димеризации. Перераспределение связанных молекул липидов при формировании димера способствует стабилизации димерного состояния за счёт энтропийного вклада в свободную энергию ассоциации.</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>Transmembrane domains of the most membrane proteins consist of single α-helices or their bundles. They take part in the functioning of receptors and ion channels and provide spatial structure formation. Thus, helix-helix interactions in lipid environment are involved in crucial processes of cell functioning. The concept of dimerization motifs representing protein-protein interactions as direct residue contacts is now replaced with the model of active membrane medium affecting embedded proteins. In the present work computer molecular dynamics simulations have been used to study the behavior of the transmembrane segment of glycophorin A and two artificial polypeptides (based on polyalanine and polyleucine) in hydrated lipid bilayers. It was demonstrated that both monomers and dimers present lipid interaction sites on the surface of helical transmembrane segments. In the case of glycophorin A monomer, the most prominent interaction site corresponds to the dimerization interface. The redistribution of bound lipid molecules during dimer formation stabilizes the dimeric state with the entropy contribution into the association free energy.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>мембранные белки</kwd>
    <kwd>гликофорин А</kwd>
    <kwd>рецепторные тирозинкиназы</kwd>
    <kwd>белок-белковые взаимодействия</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>membrane proteins</kwd>
    <kwd>glycophorin A</kwd>
    <kwd>receptor tyrosine kinases</kwd>
    <kwd>protein-protein interactions</kwd>
   </kwd-group>
  </article-meta>
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