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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">54662</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">Physical reasons for the alternation of chirality in the hierarchical organization of biological structures</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Физические причины чередования хиральности в иерархической организации биологических структур</trans-title>
    </trans-title-group>
   </title-group>
   <contrib-group content-type="authors">
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Горячев</surname>
       <given-names>Н С</given-names>
      </name>
      <name xml:lang="en">
       <surname>Goryachev</surname>
       <given-names>N S</given-names>
      </name>
     </name-alternatives>
     <email>gor_ns@icp.ac.ru</email>
     <xref ref-type="aff" rid="aff-1"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Иванов</surname>
       <given-names>П О</given-names>
      </name>
      <name xml:lang="en">
       <surname>Ivanov</surname>
       <given-names>P O</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 проблем химической физики РАН; Московский государственный университет им. М.В. Ломоносова</institution>
     <country>ru</country>
    </aff>
    <aff>
     <institution xml:lang="en">Institute of Problems of Chemical Physics RAS; Lomonosov Moscow State University</institution>
     <country>ru</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-2">
    <aff>
     <institution xml:lang="ru">Институт проблем химической физики РАН; Московский государственный университет им. М.В. Ломоносова</institution>
     <country>ru</country>
    </aff>
    <aff>
     <institution xml:lang="en">Institute of Problems of Chemical Physics RAS; Lomonosov Moscow State University</institution>
     <country>ru</country>
    </aff>
   </aff-alternatives>
   <pub-date publication-format="print" date-type="pub" iso-8601-date="2021-09-25T20:22:29+03:00">
    <day>25</day>
    <month>09</month>
    <year>2021</year>
   </pub-date>
   <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2021-09-25T20:22:29+03:00">
    <day>25</day>
    <month>09</month>
    <year>2021</year>
   </pub-date>
   <volume>6</volume>
   <issue>3</issue>
   <fpage>385</fpage>
   <lpage>388</lpage>
   <history>
    <date date-type="received" iso-8601-date="2021-09-20T20:22:29+03:00">
     <day>20</day>
     <month>09</month>
     <year>2021</year>
    </date>
    <date date-type="accepted" iso-8601-date="2021-09-20T20:22:29+03:00">
     <day>20</day>
     <month>09</month>
     <year>2021</year>
    </date>
   </history>
   <self-uri xlink:href="https://rusjbpc.ru/en/nauka/article/54662/view">https://rusjbpc.ru/en/nauka/article/54662/view</self-uri>
   <abstract xml:lang="ru">
    <p>В работе рассматривается кривизна дважды скрученных спиралей с различными видами закрученности - правая спираль, скрученная в левую сторону и правая спираль, скрученная в правую сторону. На основе данных о пространственной структуре ДНК, скрученной вокруг гистонового остова, построена геометрическая модель дважды скрученной спирали. С помощью формул дифференциальной геометрии были рассчитаны величины кривизны вдоль линии спирали. Рассмотрены два варианта намотки правой спирали ДНК, в правую спираль и в левую спираль. Показано, что чередование хиральности в иерархической организации макромолекул, на примере ДНК, энергетически в полтора раза выгоднее, чем в случае сохранения хиральности.</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>The paper considers the curvature of double-twisted spirals with different types of twist - the right spiral twisted to the left and the right spiral twisted to the right. Based on the spatial data on DNA structure twisted around the histone backbone, a geometric model of the double-stranded helix was constructed. Using differential geometry formulas, the curvature values along the spiral line were calculated. Two variants of winding the right DNA helix, into the right helix and into the left helix, are considered. It is shown that the alternation of chirality in the hierarchical organization of macromolecules, using DNA as an example, is energetically one and a half times more favorable than in the case of chirality preservation.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>хиральность</kwd>
    <kwd>ДНК</kwd>
    <kwd>кривизна</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>chirality</kwd>
    <kwd>DNA</kwd>
    <kwd>curvature</kwd>
   </kwd-group>
   <funding-group>
    <funding-statement xml:lang="ru">Работа выполнена по теме Государственного задания, № АААА-А19-119112590105-7 государственной регистрации.</funding-statement>
   </funding-group>
  </article-meta>
 </front>
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