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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">54309</article-id>
   <article-categories>
    <subj-group subj-group-type="toc-heading" xml:lang="ru">
     <subject>ЭКОЛОГИЧЕСКАЯ БИОФИЗИКА</subject>
    </subj-group>
    <subj-group subj-group-type="toc-heading" xml:lang="en">
     <subject>ECOLOGICAL BIOPHYSICS</subject>
    </subj-group>
    <subj-group>
     <subject>ЭКОЛОГИЧЕСКАЯ БИОФИЗИКА</subject>
    </subj-group>
   </article-categories>
   <title-group>
    <article-title xml:lang="en">FIREFLY LUCIFERASE AS INTRACELLULAR MARKER OF A TEMPERATURE STRESS OF BACTERIA</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>ЛЮЦИФЕРАЗА СВЕТЛЯКОВ КАК ВНУТРИКЛЕТОЧНЫЙ МАРКЕР ТЕМПЕРАТУРНОГО СТРЕССА БАКТЕРИЙ</trans-title>
    </trans-title-group>
   </title-group>
   <contrib-group content-type="authors">
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Ломакина</surname>
       <given-names>Г Ю</given-names>
      </name>
      <name xml:lang="en">
       <surname>Lomakina</surname>
       <given-names>G Yu</given-names>
      </name>
     </name-alternatives>
     <email>lomakinagalina@yahoo.com</email>
     <xref ref-type="aff" rid="aff-1"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Корягина</surname>
       <given-names>В А</given-names>
      </name>
      <name xml:lang="en">
       <surname>Koriagina</surname>
       <given-names>V A</given-names>
      </name>
     </name-alternatives>
     <xref ref-type="aff" rid="aff-2"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Угарова</surname>
       <given-names>Н Н</given-names>
      </name>
      <name xml:lang="en">
       <surname>Ugarova</surname>
       <given-names>N N</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">Московский государственный университет им. М.В. Ломоносова</institution>
     <country>ru</country>
    </aff>
    <aff>
     <institution xml:lang="en">Lomonosov Moscow State University</institution>
     <country>ru</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-2">
    <aff>
     <institution xml:lang="ru">Московский государственный университет им. М.В. Ломоносова</institution>
     <country>ru</country>
    </aff>
    <aff>
     <institution xml:lang="en">Lomonosov Moscow State University</institution>
     <country>ru</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-3">
    <aff>
     <institution xml:lang="ru">Московский государственный университет им. М.В. Ломоносова</institution>
     <country>ru</country>
    </aff>
    <aff>
     <institution xml:lang="en">Lomonosov Moscow State University</institution>
     <country>ru</country>
    </aff>
   </aff-alternatives>
   <pub-date publication-format="print" date-type="pub" iso-8601-date="2018-06-25T20:22:29+03:00">
    <day>25</day>
    <month>06</month>
    <year>2018</year>
   </pub-date>
   <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2018-06-25T20:22:29+03:00">
    <day>25</day>
    <month>06</month>
    <year>2018</year>
   </pub-date>
   <volume>3</volume>
   <issue>2</issue>
   <fpage>441</fpage>
   <lpage>446</lpage>
   <history>
    <date date-type="received" iso-8601-date="2018-06-20T20:22:29+03:00">
     <day>20</day>
     <month>06</month>
     <year>2018</year>
    </date>
    <date date-type="accepted" iso-8601-date="2018-06-20T20:22:29+03:00">
     <day>20</day>
     <month>06</month>
     <year>2018</year>
    </date>
   </history>
   <self-uri xlink:href="https://rusjbpc.ru/en/nauka/article/54309/view">https://rusjbpc.ru/en/nauka/article/54309/view</self-uri>
   <abstract xml:lang="ru">
    <p>Мы показали, что люцифераза светляка, продуцируемая клетками E.coli , является чувствительным маркером для изучения температурного воздействия на жизнеспособность живых клеток. Люцифераза экспрессируется в растворимой и активной форме, что позволяет непосредственно в клетках измерять ее ферментативную активность по свечению клеток без их разрушения. При этом интенсивность свечения высокая, свечение длительное - регистрация сигнала возможна в течение нескольких минут без существенного снижения интенсивности. Кинетические и термодинамические параметры термоинактивации люциферазы в клетках E. сoli оказались сходными с аналогичными параметрами для очищенного фермента в буферной системе; в обоих случаях инактивация фермента подчиняется кинетике первого порядка независимо от микроокружения. Скорость термоинактивации внутриклеточной люциферазы практически такая же, что и скорость снижения жизнеспособности клеток (КОЕ/мл), определенная методом посевов. При этом при воздействии температуры энергетический статус клеток, оцениваемый по содержанию внутриклеточного АТФ меняется по более сложным законам. В частности, показано увеличение содержания АТФ в течение первых 20 мин нагревания клеточной суспензии.</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>. We have shown that firefly luciferase expressed in E.coli cells is a sensitive marker for studying of influence of mild heat stress on viability of living cells. Luciferase is produced in cells as a soluble and active form that allows measuring the luminescence of cells for a long time without essential decrease in intensity. We have compared the mechanisms of thermal inactivation of the firefly luciferase in living cells and of purified enzyme in buffer system and found that luciferase inactivation follows the first order kinetics independently on microenvironment. Kinetic and activation parameters of this process for both systems were identical. It is important the rates of thermal inactivation of the enzyme in cells were comparable to the rates of viability decrease of E.coli (CFU/ml). At the same time the ATP content as indicator of metabolic status of living cells (ATP) changed under more difficult law - it was observed the increasing of intracellular ATP in E.coli within the first 20 min of heating of cellular suspension.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>люмифераза светлячков</kwd>
    <kwd>биолюминесценция</kwd>
    <kwd>термическая инактивация</kwd>
    <kwd>E.coli BL21</kwd>
    <kwd>жизнеспособность клеток</kwd>
    <kwd>тепловое напряжение</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>firefly luciferase</kwd>
    <kwd>bioluminescence</kwd>
    <kwd>thermal inactivation</kwd>
    <kwd>E.coli BL21</kwd>
    <kwd>cell viability</kwd>
    <kwd>heat stress</kwd>
   </kwd-group>
  </article-meta>
 </front>
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  <p></p>
 </body>
 <back>
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</article>
