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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">54823</article-id>
   <article-id pub-id-type="doi">10.29039/rusjbpc.2022.0487</article-id>
   <article-categories>
    <subj-group subj-group-type="toc-heading" xml:lang="ru">
     <subject>Моделирование в биофизике</subject>
    </subj-group>
    <subj-group subj-group-type="toc-heading" xml:lang="en">
     <subject>Modelling in biophycis</subject>
    </subj-group>
    <subj-group>
     <subject>Моделирование в биофизике</subject>
    </subj-group>
   </article-categories>
   <title-group>
    <article-title xml:lang="en">SPATIAL STRUCTURE OF ALFA-LAKTORFINE MOLECULE</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Пространственная структура молекулы альфа-лакторфина</trans-title>
    </trans-title-group>
   </title-group>
   <contrib-group content-type="authors">
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Ахмедов</surname>
       <given-names>Н. А.</given-names>
      </name>
      <name xml:lang="en">
       <surname>Akhmedov</surname>
       <given-names>N. A.</given-names>
      </name>
     </name-alternatives>
     <email>Namiq.49@bk.ru</email>
     <xref ref-type="aff" rid="aff-1"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Агаева</surname>
       <given-names>Л. Н.</given-names>
      </name>
      <name xml:lang="en">
       <surname>Agayeva</surname>
       <given-names>L. N.</given-names>
      </name>
     </name-alternatives>
     <email>leylanamig@mail.ru</email>
     <xref ref-type="aff" rid="aff-2"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Аббаслы</surname>
       <given-names>Р. М.</given-names>
      </name>
      <name xml:lang="en">
       <surname>Abbasli</surname>
       <given-names>R. M.</given-names>
      </name>
     </name-alternatives>
     <xref ref-type="aff" rid="aff-3"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Исмаилова</surname>
       <given-names>Л. И.</given-names>
      </name>
      <name xml:lang="en">
       <surname>Ismailova</surname>
       <given-names>L. I.</given-names>
      </name>
     </name-alternatives>
     <email>lara.ismailova.52@mail.ru</email>
     <xref ref-type="aff" rid="aff-4"/>
    </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>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-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>
   <aff-alternatives id="aff-4">
    <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="2022-03-25T20:22:29+03:00">
    <day>25</day>
    <month>03</month>
    <year>2022</year>
   </pub-date>
   <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2022-03-25T20:22:29+03:00">
    <day>25</day>
    <month>03</month>
    <year>2022</year>
   </pub-date>
   <volume>7</volume>
   <issue>1</issue>
   <fpage>81</fpage>
   <lpage>86</lpage>
   <history>
    <date date-type="received" iso-8601-date="2022-03-20T20:22:29+03:00">
     <day>20</day>
     <month>03</month>
     <year>2022</year>
    </date>
    <date date-type="accepted" iso-8601-date="2022-03-20T20:22:29+03:00">
     <day>20</day>
     <month>03</month>
     <year>2022</year>
    </date>
   </history>
   <self-uri xlink:href="https://rusjbpc.ru/en/nauka/article/54823/view">https://rusjbpc.ru/en/nauka/article/54823/view</self-uri>
   <abstract xml:lang="ru">
    <p>Опиоидные пептиды в настоящее время считаются наиболее изученной группой сигнальных веществ пептидной природы. Опиум вызывает обезболивание, успокоение и засыпание, также эйфорическое состояние и ряд вегетативных реакций. Опиоидные пептиды бывают животного и растительного происхождения. Ряд экзогенных пептидов, получаемых с пищей, обладают опиоидоподобными свойствами. Такие пептиды были названы экзорфинами, имеются десятки представителей. Молекула альфа-лакторфина является представителем этого класса. Методом теоретического конформационного анализа исследованы конформационные возможности молекулы альфа-лакторфина Tyr-Gly-Leu-Phe. Потенциальная функция системы выбрана в виде суммы невалентных, электростатических и торсионных взаимодействий и энергии водородных связей. Найдены низкоэнергетические конформации молекулы альфа-лакторфина, значения двугранных углов основных и боковых цепей аминокислотных остатков, входящих в состав молекул, оценена энергия внутри- и межостаточных взаимодействий. Показано, что пространственная структура молекулы альфа-лакторфина может быть представлена одиннадцатью формами основной цепи. Полученные результаты могут быть использованы для выяснения структурной и структурно-функциональной организации молекул экзорфинов.</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>Opioid peptides are currently considered the most studied group of peptide signaling substances. Opium causes pain relief, sedation and falling asleep, as well as a euphoric state and a number of vegetative reactions. Opioid peptides are of animal and plant origin. A number of exogenous peptides obtained from food have opioid-like properties. Such peptides were called exorphins, there are dozens of representatives. The alpha-laktorphine molecule is a representative of this class. The conformational possibilities of the Tyr-Gly-Leu-Phe alpha-lactorphine molecule were studied by the method of theoretical conformational analysis. The potential function of the system is chosen as the sum of non-valence, electrostatic and torsion interactions and the energy of hydrogen bonds. The low-energy conformations of the alpha-laktorphine molecule, the values of the dihedral angles of the main and side chains of the amino acid residues that make up the molecule were found, and the energy of intra- and interresidual interactions was estimated. It was shown that the spatial structure of the alpha-laktorphine molecule can be represented by eleven forms of the main chain. The results obtained can be used to elucidate the structural and structural-functional organization of exorphin molecules.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>экзорфин</kwd>
    <kwd>лакторфин</kwd>
    <kwd>опиоид</kwd>
    <kwd>структура</kwd>
    <kwd>конформация</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>exorphin</kwd>
    <kwd>laktorphine</kwd>
    <kwd>opioid</kwd>
    <kwd>structure</kwd>
    <kwd>conformation</kwd>
   </kwd-group>
  </article-meta>
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