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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">vestich</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Национальной академии наук Беларуси. Серия химических наук</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the National Academy of Sciences of Belarus, Chemical Series</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8331</issn><issn pub-type="epub">2524-2342</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">vestich-140</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>БИООРГАНИЧЕСКАЯ ХИМИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>BIOORGANIC CHEMISTRY</subject></subj-group></article-categories><title-group><article-title>Субстратная специфичность рекомбинантной стероид 21-гидроксилазы человека и влияние цитохрома b5 на ее активность</article-title><trans-title-group xml:lang="en"><trans-title>Substrate specificity of recombinant steroid 21-hydroxylase H. sapiens and the effect of cytochrome b5 on its activity</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Копоть</surname><given-names>В. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kopats</surname><given-names>V. A.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сергеев</surname><given-names>Г. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Sergeev</surname><given-names>G. V.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гилеп</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Gilep</surname><given-names>A. A.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Усанов</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Usanov</surname><given-names>S. A.</given-names></name></name-alternatives><email xlink:type="simple">noemail@neicon.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff xml:lang="ru" id="aff-1"><institution>Институт биоорганической химии НАН Беларуси</institution><country>Belarus</country></aff><pub-date pub-type="collection"><year>2015</year></pub-date><pub-date pub-type="epub"><day>08</day><month>06</month><year>2016</year></pub-date><volume>0</volume><issue>3</issue><fpage>74</fpage><lpage>81</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Копоть В.А., Сергеев Г.В., Гилеп А.А., Усанов С.А., 2016</copyright-statement><copyright-year>2016</copyright-year><copyright-holder xml:lang="ru">Копоть В.А., Сергеев Г.В., Гилеп А.А., Усанов С.А.</copyright-holder><copyright-holder xml:lang="en">Kopats V.A., Sergeev G.V., Gilep A.A., Usanov S.A.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://vestichem.belnauka.by/jour/article/view/140">https://vestichem.belnauka.by/jour/article/view/140</self-uri><abstract><p>Цитохром CYP21 человека (стероид 21-гидроксилаза) был экспрессирован в клетках Escherichia coli DH5α (экспрессионный уровень составил 150 нмоль белка на 1 литр культуральной среды). Использование двух последовательных колоночных хроматографий позволило получить белок высокой степени очистки, обладающий специфической 21-гидроксилазной активностью по отношению к прогестерону, 17α-гидроксипрогестерону и 11-гидрокси-прогестерону. В данной работе проводился скрининг стероидов как потенциальных субстратов для белка. Впервые доказано, что 11-гидроксипрогестерон является эндогенным субстратом CYP21. Показано, что цитохром b5, в отличие от его эффекта на CYP17A1, не оказывает влияния на 21-гидроксилазную активность CYP21 по отношению к прогестерону, 11-гидроксипрогестерону и 17-гидроксипрогестерону, что свидетельствует о разных механизмах регуляции двух изоформ цитохрома Р450 в мембранах эндоплазматического ретикулума коры надпочечников.</p></abstract><trans-abstract xml:lang="en"><p>Human cytochrome CYP21 (steroid 21-hydroxylase) has been expressed in Escherichia coli DH5α and the expression level was 150 nmol from 1 liter of bacterial culture. Utilizing two steps of column chromatography has allowed to obtain highly purified protein. Steroids have been screened as potential substrates for the enzyme. CYP21 showed typical spectral change (type I of spectral responce) when binding with progesterone, 17α-hydroxyprogesterone and 11-hydroxyprogesterone. In addition, it has been shown that cytochrome b5 does not affect hydroxylase activity of CYP21 toward progesterone, 17a-hydroxyprogesterone and 11-hydroxyprogesterone.</p></trans-abstract></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Schenkman J. В., Jansson I. // Pharmacology &amp; Therapeutics. 2003. N 97. P. 139-152.</mixed-citation><mixed-citation xml:lang="en">Schenkman J. В., Jansson I. // Pharmacology &amp; Therapeutics. 2003. N 97. 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