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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">microbe</journal-id><journal-title-group><journal-title xml:lang="ru">Проблемы особо опасных инфекций</journal-title><trans-title-group xml:lang="en"><trans-title>Problems of Particularly Dangerous Infections</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0370-1069</issn><issn pub-type="epub">2658-719X</issn><publisher><publisher-name>Russian Research Anti-Plague Institute “Microbe”</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21055/0370-1069-2019-3-75-80</article-id><article-id custom-type="elpub" pub-id-type="custom">microbe-1172</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>MSHA-подобные пили нетоксигенных штаммов холерных вибрионов</article-title><trans-title-group xml:lang="en"><trans-title>MSHA-like pili of non-toxigenic Vibrio cholerae strains</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9216-7777</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Монахова</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Monakhova</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ростов-на-Дону.</p></bio><bio xml:lang="en"><p>117/40, M.Gor'kogo St., Rostov-on-Don, 344002.</p></bio><email xlink:type="simple">monakhova_ev@antiplague.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>Архангельская</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Arkhangelskaya</surname><given-names>I. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ростов-на-Дону.</p></bio><bio xml:lang="en"><p>117/40, M.Gor'kogo St., Rostov-on-Don, 344002.</p></bio><email xlink:type="simple">plague@aaanet.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>Титова</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Titova</surname><given-names>S. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ростов-на-Дону.</p></bio><bio xml:lang="en"><p>117/40, M.Gor'kogo St., Rostov-on-Don, 344002.</p></bio><email xlink:type="simple">plague@aaanet.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>Писанов</surname><given-names>Р. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Pisanov</surname><given-names>R. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ростов-на-Дону.</p></bio><bio xml:lang="en"><p>117/40, M.Gor'kogo St., Rostov-on-Don, 344002.</p></bio><email xlink:type="simple">plague@aaanet.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Ростовский-на-Дону научно-исследовательский противочумный институт</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Rostov-on-Don Research Anti-Plague Institute</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>12</day><month>10</month><year>2019</year></pub-date><volume>0</volume><issue>3</issue><fpage>75</fpage><lpage>80</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Монахова Е.В., Архангельская И.В., Титова С.В., Писанов Р.В., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Монахова Е.В., Архангельская И.В., Титова С.В., Писанов Р.В.</copyright-holder><copyright-holder xml:lang="en">Monakhova E.V., Arkhangelskaya I.V., Titova S.V., Pisanov R.V.</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://journal.microbe.ru/jour/article/view/1172">https://journal.microbe.ru/jour/article/view/1172</self-uri><abstract><p>Цель исследования состояла в идентификации гомологов генов msh-кластера в геномах нетоксигенных холерных вибрионов, биоинформационном анализе их продуктов и изучении адгезивных свойств штаммов, содержащих измененные гены. Материалы и методы. В работе использовано 17 клинических штаммов холерных вибрионов не О1/не О139 и 2 штамма О1 серогруппы, выделенные из водоемов. Гены msh-кластера идентифицировали в полных геномах с помощью программ BLASTN 2.2.29 и BioEdit 7.2.5; трансляцию генов, сравни-тельный анализ их нуклеотидных, аминокислотных последовательностей продуктов трансляции осуществляли с использованием пакета программ Vector NTI Advance 11 (Invitrogen). Результаты и обсуждение. В геномах 18 из 19 исследуемых штаммов идентифицированы кластеры генов, ответственных за продукцию пилей адгезии (mshH-Q), представленные разными аллелями, большинство из которых отличались по нуклеотидному составу от прототипных генов msh-кластера, однако имели такую же локализацию и порядок расположения. Лишь у одного штамма кластер был близок таковому у прототипа. Биоинформационный анализ продуктов их трансляции показал, что аминокислотная последовательность мажорной субъединицы пилей MshA лишь в небольшом N-концевом участке (1-41) гомологична таковой прототипа, тогда как остальная часть не имеет с ней ничего общего. Этот белок, сходный с описанным H. Kuroki et al. (2001) VcfA и обозначенный нами как MshA-like, тем не менее сохранил потенциальный домен пилина. Аналогичная картина наблюдалась и в минорных субъединицах, обозначенных как MshC-like. Другие минорные субъединицы также сохранили характерные для них домены. Все штаммы агглютинировали эритроциты человека I группы крови и куриные эритроциты, причем у содержащих измененные гены mshA-like и mshC-like реакция не ингибировалась маннозой. Поскольку большинство изученных штаммов выделено от госпитализированных клинических больных, не исключено, что у нетоксигенных холерных вибрионов, лишенных острова патогенности VPI, MSHA-подобные пили могут служить фактором колонизации кишечника человека, в отличие от VPI-позитивных. Полученные данные создают основу для экспериментальной проверки этого предположения.</p></abstract><trans-abstract xml:lang="en"><p>Aim. In this study, we set out to identify the homologues of genes from the msh-cluster in the genomes of non-toxigenic V cholerae, to perform the bioinformatics analysis of their products, as well as to study the adhesive properties of strains containing altered genes. Materials and methods. We analysed 17 clinical strains of non-O1/non-O139 V cholerae and 2 strains of the O1 serogroup isolated from water bodies. Genes belonging to the msh-cluster were identified in the whole genomes using the BLASTN 2.2.29 and BioEdit 7.2.5 programs. Gene translation, comparative analysis of their nucleotide sequences and the amino acid sequences of deduced products were performed using the Vector NTI Advance 11 (Invitrogen). Results and discusssion. In 18 out of the 19 studied genomes we identified gene clusters responsible for production of adhesion pili (mshH-Q) represented by diverse alleles, the majority of which differed from the prototype genes of the msh-cluster in nucleotide composition but had the same localization and arrangement. Only one strain had a cluster that was close to that of the prototype. A bioinformatics analysis of their deduced products indicated that the amino acid sequence of the major MshA pilus subunit is homologous to the prototype only in a short N-terminal region (1-41) while sharing no similarities with the rest of the sequence. Nevertheless, this protein, similar to VcfA described by Kuroki H. et al. (2001) and designated by us as MshA-like, retained a putative pilus domain. A similar pattern was observed in the minor subunits designated as MshC-like. Other minor subunits also retained their characteristic domains. All of the strains agglutinated human erythrocytes (group O) and chicken erythrocytes, and in isolates harboring modified mshA-like and mshC-like genes the reaction was not inhibited by mannose. Since most of the studied strains were isolated from hospitalized patients, it is possible that in non-toxigenic V. cholerae lacking the pathogenicity island VPI, MSHA-like pili may serve as a colonization factor of the human intestine, in contrast to VPI-positive strains. The obtained information provides a basis for experimental verification of this assumption.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>Vibrio cholerae</kwd><kwd>пили MSHA</kwd><kwd>биоинформационный анализ</kwd><kwd>адгезия</kwd><kwd>гемагглютинация</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Vibrio cholerae</kwd><kwd>MSHA pili</kwd><kwd>bioinformatics analysis</kwd><kwd>adhesion</kwd><kwd>haemagglutination</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">Chiavelli D.A., Marsh J.W., Taylor R.K. The mannose-sensitive hemagglutinin of Vibrio cholerae promotes adherence to zooplankton. Appl. Environ. Microbiol. 2001; 67(7):3220-5.</mixed-citation><mixed-citation xml:lang="en">Chiavelli D.A., Marsh J.W., Taylor R.K. The mannose-sensitive hemagglutinin of Vibrio cholerae promotes adherence to zooplankton. Appl. Environ. 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