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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">54163</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">Structural investigations of binding sites of sodium azide with two-domain laccase Streptomyces Lividans АС-1709</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Структурные исследования участков связывания азида натрия с двухдоменной лакказой Streptomyces Lividans АС-1709</trans-title>
    </trans-title-group>
   </title-group>
   <contrib-group content-type="authors">
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Тищенко</surname>
       <given-names>С В</given-names>
      </name>
      <name xml:lang="en">
       <surname>Tishchenko</surname>
       <given-names>S V</given-names>
      </name>
     </name-alternatives>
     <email>sveta@vega.protres.ru</email>
     <xref ref-type="aff" rid="aff-1"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Габдулхаков</surname>
       <given-names>А Г</given-names>
      </name>
      <name xml:lang="en">
       <surname>Gabdulkhakov</surname>
       <given-names>A G</given-names>
      </name>
     </name-alternatives>
     <xref ref-type="aff" rid="aff-2"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Трубицина</surname>
       <given-names>Л И</given-names>
      </name>
      <name xml:lang="en">
       <surname>Trubitsina</surname>
       <given-names>L I</given-names>
      </name>
     </name-alternatives>
     <xref ref-type="aff" rid="aff-3"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Лисов</surname>
       <given-names>А В</given-names>
      </name>
      <name xml:lang="en">
       <surname>Lisov</surname>
       <given-names>A V</given-names>
      </name>
     </name-alternatives>
     <xref ref-type="aff" rid="aff-4"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Леонтьевский</surname>
       <given-names>А А</given-names>
      </name>
      <name xml:lang="en">
       <surname>Leontievsky</surname>
       <given-names>A A</given-names>
      </name>
     </name-alternatives>
     <xref ref-type="aff" rid="aff-5"/>
    </contrib>
   </contrib-group>
   <aff-alternatives id="aff-1">
    <aff>
     <institution xml:lang="ru">Институт белка РАН</institution>
     <country>ru</country>
    </aff>
    <aff>
     <institution xml:lang="en">Institute of Protein Research, RAS</institution>
     <country>ru</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-2">
    <aff>
     <institution xml:lang="ru">Институт белка РАН</institution>
     <country>ru</country>
    </aff>
    <aff>
     <institution xml:lang="en">Institute of Protein Research, RAS</institution>
     <country>ru</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-3">
    <aff>
     <institution xml:lang="ru">Институт биохимии и физиологии микроорганизмов имени Г.К. Скрябина РАН</institution>
     <country>ru</country>
    </aff>
    <aff>
     <institution xml:lang="en">G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, RAS</institution>
     <country>ru</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-4">
    <aff>
     <institution xml:lang="ru">Институт биохимии и физиологии микроорганизмов имени Г.К. Скрябина РАН</institution>
     <country>ru</country>
    </aff>
    <aff>
     <institution xml:lang="en">G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, RAS</institution>
     <country>ru</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-5">
    <aff>
     <institution xml:lang="ru">Институт биохимии и физиологии микроорганизмов имени Г.К. Скрябина РАН</institution>
     <country>ru</country>
    </aff>
    <aff>
     <institution xml:lang="en">G.K. Skryabin Institute of Biochemistry and Physiology of Microorganisms, RAS</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>243</fpage>
   <lpage>247</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/54163/view">https://rusjbpc.ru/en/nauka/article/54163/view</self-uri>
   <abstract xml:lang="ru">
    <p>Лакказа (ЕС 1.10.3.2) - фермент, принадлежащий к семейству «голубых» оксидоредуктаз, содержащих в активном центре четыре атома меди, организованные в металлоцентры Т1 и T2/T3. Т2/Т3 медьсодержащий центр включает Т2 центр с одним атомом меди и Т3 центр с двумя атомами меди. Лакказа катализирует окисление широкого спектра фенольных и нефенольных субстратов. Конечным акцептором электронов является кислород, который восстанавливается до воды. Лакказы обнаружены у грибов, бактерий, растений и насекомых. Лакказы эукариот состоят из трёх доменов, в бактериях, кроме трёхдоменных, встречаются двухдоменные (малые) лакказы. Двухдоменные лакказы обладают высокой термостабильностью, устойчивостью к высоким значениям рН и различным ингибиторам. Известно, что азид натрия является сильным ингибитором трёхдоменных лакказ, структурными методами показана его локализация в районе Т2/Т3-центра. Двухдоменные лакказы слабо ингибируются даже высокими концентрациями азида натрия, а их активность в среде со щелочным значением рН в присутствии азида натрия даже повышается. Место связывания азида натрия с двухдоменными лакказами не было определено. В данной работе впервые обнаружено предположительное место связывания азида натрия с малой лакказой Streptomyces sp. (lividans) Ас-1709. Азид обнаружен на расстоянии около 5 Å от субстрат-связывающего кармана Т1- центра. В данной работе предложено объяснение низкой чувствительности двухдоменных лакказ к азиду натрия.</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>Laccase (ЕС 1.10.3.2) belongs to the family of &quot;blue&quot; oxidoreductases containing in the active center four copper atoms organized in metal centers T1 and T2/T3. The T2/T3 center includes a T2 center with one copper atom and a T3 center with two copper atoms. Laccase catalyzes oxidation of a wide range of phenolic and non-phenolic substrates. The final electron acceptor is oxygen, which is reduced to water. Laccases are found in fungi, bacteria, plants and insects. Eukaryotic laccases consist of three domains, in bacteria, besides three-domain laccases there are two-domain (small) laccases. Two-domain laccases have high thermal stability, are active in the alkaline pH range and in the presence of different inhibitors of three-domain laccases. It is known that sodium azide is a strong inhibitor of three-domain laccase; structural methods show that it is located in the T2/T3-center of laccase. Two-domain laccases are poorly inhibited even by high concentrations of sodium azide, and their activity in the alkaline pH in the presence of sodium azide even increases. The site of binding of sodium azide with two-domain laccase was not determined. In this study, for the first time we have found a presumptive binding site of azide with small laccase Streptomyces sp. (lividans ) Ac-1709. Azide is found at a distance of about 5 Å from the substrate-binding pocket of the T1-center. In this paper we suggest an explanation of low sensitivity of two-domain laccase to sodium azide.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>двухдоменные лакказы</kwd>
    <kwd>азид натрия</kwd>
    <kwd>пространственная структура</kwd>
    <kwd>медь-содержащие центры</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>two-domain laccases</kwd>
    <kwd>sodium azide</kwd>
    <kwd>crystal structure</kwd>
    <kwd>copper-containing centers</kwd>
   </kwd-group>
  </article-meta>
 </front>
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