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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">mimmun</journal-id><journal-title-group><journal-title xml:lang="ru">Медицинская иммунология</journal-title><trans-title-group xml:lang="en"><trans-title>Medical Immunology (Russia)</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1563-0625</issn><issn pub-type="epub">2313-741X</issn><publisher><publisher-name>SPb RAACI</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.15789/1563-0625-2005-4-375-380</article-id><article-id custom-type="elpub" pub-id-type="custom">mimmun-486</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>ОРИГИНАЛЬНЫЕ СТАТЬИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL ARTICLES</subject></subj-group></article-categories><title-group><article-title>КОНФОРМАЦИОННЫЕ ИЗМЕНЕНИЯ ЧЕЛОВЕЧЕСКОГО СЫВОРОТОЧНОГО γ–ГЛОБУЛИНА В ПРИСУТСТВИИ КАТИОНОВ ЦИНКА</article-title><trans-title-group xml:lang="en"><trans-title>CONFORMATION CHANGES OF HUMAN SERUM γ–GLOBULIN IN THE PRESENCE OF ZINC IONS</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>Чекнёв</surname><given-names>С. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Cheknev</surname><given-names>S. B.</given-names></name></name-alternatives><bio xml:lang="ru"><p>123098, г.Москва, ул. Гамалеи, дом 18</p></bio><email xlink:type="simple">cheknev@riem.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>Бабаева</surname><given-names>Е. Е.</given-names></name><name name-style="western" xml:lang="en"><surname>Babaeva</surname><given-names>E. E.</given-names></name></name-alternatives><email xlink:type="simple">cheknev@riem.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>Воробьёва</surname><given-names>У. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Vorobieva</surname><given-names>U. A.</given-names></name></name-alternatives><email xlink:type="simple">cheknev@riem.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>Денисова</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Denisova</surname><given-names>E. A.</given-names></name></name-alternatives><email xlink:type="simple">cheknev@riem.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff xml:lang="ru" id="aff-1"><institution>НИИ эпидемиологии и микробиологии им.Н.Ф.Гамалеи РАМН, Москва</institution><country>Russian Federation</country></aff><pub-date pub-type="collection"><year>2005</year></pub-date><pub-date pub-type="epub"><day>22</day><month>07</month><year>2014</year></pub-date><volume>7</volume><issue>4</issue><fpage>375</fpage><lpage>380</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Чекнёв С.Б., Бабаева Е.Е., Воробьёва У.А., Денисова Е.А., 2014</copyright-statement><copyright-year>2014</copyright-year><copyright-holder xml:lang="ru">Чекнёв С.Б., Бабаева Е.Е., Воробьёва У.А., Денисова Е.А.</copyright-holder><copyright-holder xml:lang="en">Cheknev S.B., Babaeva E.E., Vorobieva U.A., Denisova E.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://www.mimmun.ru/mimmun/article/view/486">https://www.mimmun.ru/mimmun/article/view/486</self-uri><abstract><p>Резюме. С использованием дифференциальной спектрофотометрии в ультрафиолете оценивали конформационные изменения человеческого сывороточного γ–глобулина при взаимодействии с катионами цинка в растворе. Показано, что надфизиологические концентрации цинка вызывают снижение компактности упаковки молекулы белка, ее развертывание во внемолекулярное пространство и образование надмолекулярных агрегатов γ–глобулина. В меньших, чем физиологические, концентрациях катионы цинка встраиваются во внутренние компартменты белковой глобулы, формируют внутримолекулярные координационные связи и компактизуют молекулу белка. При этом образования агрегатов γ–глобулина в растворе не происходит. Обсуждается роль двухвалентных катионов металлов в установлении определенных конформаций белков γ–глобулиновой фракции и в регуляции тем самым их эффекторных функций, реализуемых на уровне межмолекулярных и межклеточных взаимодействий.</p></abstract><trans-abstract xml:lang="en"><p>Abstract. Conformational changes of human serum γ–globulin during interaction with the zinc ions were studied in a solution. It has been shown that the presence of zinc in over its physiological concentrations led to increase in optical density across the whole spectrum of γ–globulin ultraviolet absorption. On the contrary, hypochromia in the spectrum was registered after interaction of the protein with zinc used in subphisiological concentrations. Possible role of divalent metal cations in changes in conformation of the blood serum γ–globulins, and thereby in regulation of their effector functions was discussed. (Med. Immunol., 2005, vol.7, № 4, pp. 375–380)</p></trans-abstract><kwd-group xml:lang="ru"><kwd>γ–глобулин</kwd><kwd>цинк</kwd><kwd>изменения конформации</kwd></kwd-group><kwd-group xml:lang="en"><kwd>γ-globulin</kwd><kwd>zinc</kwd><kwd>changes in conformation</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Авцын А.П., Жаворонков А.А., Риш М.А., Строчкова Л.С. Микроэлементозы человека: этиология, классификация, органопатология. – М.: Медицина, 1991. – 496 с.</mixed-citation><mixed-citation xml:lang="en">Авцын А.П., Жаворонков А.А., Риш М.А., Строчкова Л.С. Микроэлементозы человека: этиология, классификация, органопатология. – М.: Медицина, 1991. – 496 с.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Ковальчук Л.В., Сусликов В.Л., Карзакова Л.М., Соколова Е.В. 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