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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">zhps</journal-id><journal-title-group><journal-title xml:lang="ru">Журнал прикладной спектроскопии</journal-title><trans-title-group xml:lang="en"><trans-title>Zhurnal Prikladnoii Spektroskopii</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0514-7506</issn><publisher><publisher-name>B. I. Stepanov Institute of Physics of the National Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">zhps-780</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>Статьи</subject></subj-group></article-categories><title-group><article-title>СПЕКТРОСКОПИЧЕСКОЕ ИССЛЕДОВАНИЕ МЕХАНИЗМА ВЗАИМОДЕЙСТВИЯ НАНОЧАСТИЦ СЕРЕБРА С ТРИПСИНОМ</article-title><trans-title-group xml:lang="en"><trans-title>SPECTROSCOPIC ANALYSIS OF THE INTERACTION BETWEEN SILVER NANOPARTICLES AND TRYPSIN</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>Liu</surname><given-names>M.</given-names></name><name name-style="western" xml:lang="en"><surname>Liu</surname><given-names>Min</given-names></name></name-alternatives><bio xml:lang="ru"><p>Нанкин 210094</p></bio><bio xml:lang="en"><p>Nanjing 210094</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Li</surname><given-names>Y.</given-names></name><name name-style="western" xml:lang="en"><surname>Li</surname><given-names>Yi</given-names></name></name-alternatives><bio xml:lang="ru"><p>Нанкин 210094</p></bio><bio xml:lang="en"><p>Nanjing 210094</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Li</surname><given-names>L.</given-names></name><name name-style="western" xml:lang="en"><surname>Li</surname><given-names>Luo</given-names></name></name-alternatives><bio xml:lang="ru"><p>Нанкин 210094</p></bio><bio xml:lang="en"><p>Nanjing 210094</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Sun</surname><given-names>X.</given-names></name><name name-style="western" xml:lang="en"><surname>Sun</surname><given-names>Xiuyun</given-names></name></name-alternatives><bio xml:lang="ru"><p>Нанкин 210094</p></bio><bio xml:lang="en"><p>Nanjing 210094</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Li</surname><given-names>J.</given-names></name><name name-style="western" xml:lang="en"><surname>Li</surname><given-names>Jiansheng</given-names></name></name-alternatives><bio xml:lang="ru"><p>Нанкин 210094</p></bio><bio xml:lang="en"><p>Nanjing 210094</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Lu</surname><given-names>R.</given-names></name><name name-style="western" xml:lang="en"><surname>Lu</surname><given-names>Rui</given-names></name></name-alternatives><bio xml:lang="ru"><p>Нанкин 210094</p></bio><bio xml:lang="en"><p>Nanjing 210094</p></bio><email xlink:type="simple">rlu@njust.edu.cn</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Школа экологической и биологической инженерии Нанкинского университета науки и технологий</institution></aff><aff xml:lang="en"><institution>Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering at Nanjing University of Science and Technology</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>29</day><month>01</month><year>2021</year></pub-date><volume>88</volume><issue>1</issue><elocation-id>166(1)-166(13)</elocation-id><permissions><copyright-statement>Copyright &amp;#x00A9; Liu M., Li Y., Li L., Sun X., Li J., Lu R., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Liu M., Li Y., Li L., Sun X., Li J., Lu R.</copyright-holder><copyright-holder xml:lang="en">Liu M., Li Y., Li L., Sun X., Li J., Lu R.</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://zhps.ejournal.by/jour/article/view/780">https://zhps.ejournal.by/jour/article/view/780</self-uri><abstract><p>Исследовано взаимодействие НЧ серебра (НЧ Ag) с трипсином с применением спектров УФвидимого диапазона, флуоресценции и кругового дихроизма. Трипсин подвергается воздействию НЧ Ag различных размеров и концентраций. Интенсивность пиков поглощения трипсина в спектре УФ-видимой области пропорциональна концентрации и размеру НЧ Ag. Спектры кругового дихроизма свидетельствуют о влиянии НЧ Ag на вторичную структуру трипсина. Спектры флуоресценции показывают, что образование комплексов белок–наночастица изменяет химическое окружение или структуру белкового хромофора и тушит его флуоресценцию. Следовательно, степень связывания НЧ Ag с трипсином зависит как от концентрации, так и от размера НЧ и изменяет физикохимические свойства НЧ Ag, а также вторичную структуру трипсина. Относительно безопасности наноматериалов, для установления токсичности НЧ и руководства по их проектированию необходимо дополнительно изучать взаимодействие НЧ с белками.</p></abstract><trans-abstract xml:lang="en"><p>The rapid development of nanoparticles (NPs) and their broad applications in medicine caused concerns about biological effects and biosafety. Here, the interaction of silver NPs (AgNPs) and trypsin is studied with ultraviolet-visible spectra, circular dichroism, and fluorescence spectra. Trypsin is exposed to various sizes and concentrations of AgNPs. The intensities of the trypsin ultraviolet-visible absorption peaks are proportional to the AgNP concentration and size. In the circular dichroism spectra, there was evidence that AgNPs affected the secondary structure of trypsin. Fluorescence spectra show that the formation of the protein-nanoparticle complexes alters the protein chromophore chemical environment or structure and quenches its fluorescence. Hence, the extent of AgNP binding of trypsin depends on both NP concentration and size, and changes the AgNPs physicochemical properties as well as the trypsin secondary structure. With regard to nanomaterial safety, the interaction of NPs with proteins must be explored further for establishing NP toxicity and design guidance.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>наночастицы серебра</kwd><kwd>трипсин</kwd><kwd>механизм взаимодействия</kwd><kwd>УФ-видимый диапазон спектра</kwd><kwd>круговой дихроизм</kwd><kwd>спектр флуоресценции</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Ag nanoparticles</kwd><kwd>trypsin</kwd><kwd>interaction mechanism</kwd><kwd>ultraviolet-visible</kwd><kwd>circular dichroism</kwd><kwd>fluorescence spectra</kwd></kwd-group><funding-group><funding-statement xml:lang="en">The authors wish to thank the Natural Science Foundation of Jiangsu Province (BK20191294), the National Natural Science Foundation of China (21505074), and the Fundamental Research Funds for the Central Universities (30919011214) for partial support of this work.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">G. 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