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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">10.21055/0370-1069-2023-4-125-134</article-id><article-id custom-type="elpub" pub-id-type="custom">microbe-1906</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>Вариабельность генов omp25 и omp2a у штаммов бруцелл различного таксономического положения</article-title><trans-title-group xml:lang="en"><trans-title>Variability of omp25 and omp2a Genes in Brucella Strains of Different Taxonomic Position</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-0954-5683</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Осина</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Osina</surname><given-names>N. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>410005, Саратов, ул. Университетская, 46</p></bio><bio xml:lang="en"><p>46, Universitetskaya St., Saratov, 410005</p></bio><email xlink:type="simple">rusrapi@microbe.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2405-2684</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Булгакова</surname><given-names>Е. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Boolgakova</surname><given-names>E. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>410005, Саратов, ул. Университетская, 46</p></bio><bio xml:lang="en"><p>46, Universitetskaya St., Saratov, 410005</p></bio><email xlink:type="simple">rusrapi@microbe.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5308-0022</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Осин</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Osin</surname><given-names>A. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>410005, Саратов, ул. Университетская, 46</p></bio><bio xml:lang="en"><p>46, Universitetskaya St., Saratov, 410005</p></bio><email xlink:type="simple">rusrapi@microbe.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>Швиденко</surname><given-names>И. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Shvidenko</surname><given-names>I. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>410005, Саратов, ул. Университетская, 46</p></bio><bio xml:lang="en"><p>46, Universitetskaya St., Saratov, 410005</p></bio><email xlink:type="simple">rusrapi@microbe.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1143-4069</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Щербакова</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Shcherbakova</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>410005, Саратов, ул. Университетская, 46</p></bio><bio xml:lang="en"><p>46, Universitetskaya St., Saratov, 410005</p></bio><email xlink:type="simple">rusrapi@microbe.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФКУН «Российский научно-исследовательский противочумный институт «Микроб»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Russian Research Anti-Plague Institute “Microbe”</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>10</day><month>01</month><year>2024</year></pub-date><volume>0</volume><issue>4</issue><fpage>125</fpage><lpage>134</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Осина Н.А., Булгакова Е.Г., Осин А.В., Швиденко И.Г., Щербакова С.А., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Осина Н.А., Булгакова Е.Г., Осин А.В., Швиденко И.Г., Щербакова С.А.</copyright-holder><copyright-holder xml:lang="en">Osina N.A., Boolgakova E.G., Osin A.G., Shvidenko I.G., Shcherbakova 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://journal.microbe.ru/jour/article/view/1906">https://journal.microbe.ru/jour/article/view/1906</self-uri><abstract><p>Цель исследования – выявление структурных отличий в генах бруцелл omp25 и omp2a, позволяющих определять их таксономическое положение.</p><sec><title>Материалы и методы</title><p>Материалы и методы. Объектами исследования служили нуклеотидные последовательности полных геномов 48 штаммов бруцелл, представленных в базе данных GenBank NCBI. Для оценки гомологии последовательностей использовали алгоритм BLAST и программу MEGA 11.</p></sec><sec><title>Результаты и обсуждение</title><p>Результаты и обсуждение. У 13 видов бруцелл и Brucella spp. с неустановленной видовой принадлежностью воспроизведены in silico рестрикционные профили HindIII, EcoRV и EcoRI, AluI участков генома, включающих соответственно гены omp25 и оmp2a, фланкированные праймерами 25А-25B и 2AB-2AA. В гене omp25 выявлено 11 несинонимичных и 24 синонимичные мутации; две делеции: ∆103–108 п.н. – у В. nosferati, ∆562–597 п.н. – у В. ovis; вставка ACT после 585 п.н. – у В. vulpis. Вариабельность гена omp2a у изученных штаммов бруцелл была значительно выше. Выявлены 138 SNPs, из них 60 приводят к замене аминокислот, две формируют стоп-кодоны, дополнительно одна делеция ∆424–561 п.н. – у В. abortus 1, 2, 4-го биоваров. Единичные мутации в генах omp2a и omp25 имели как групповую специфичность – для нескольких видов, так и уникальную – для определенного вида или биовара патогена. Аллельные профили генов omp25 и omp2a обладают большей разрешающей способностью, чем изученные их рестрикционные профили. Выявленные изменения в структуре генов omp25 и omp2a коррелируют с циркуляцией отдельных видов и биоваров бруцелл в организме определенных носителей. В указанных генах показано наличие делеций, вставок и единичных полиморфных нуклеотидов, специфичных для видов, групп видов и в ряде случаев – биоваров патогена.</p></sec></abstract><trans-abstract xml:lang="en"><p>The aim of the study was to identify structural differences in the Brucella omp25 and omp2a genes, which make it possible to determine their taxonomic position.</p><sec><title>Materials and methods</title><p>Materials and methods. The objects of the study were the nucleotide sequences of the complete genomes of 48 Brucella strains presented in the GenBank NCBI database. To assess sequence homology, the BLAST algorithm and the MEGA 11 program were used.</p></sec><sec><title>Results and discussion</title><p>Results and discussion. In 13 species of Brucella and Brucella spp. with unknown species appurtenance, HindIII, EcoRV and EcoRI, AluI restriction profiles of genome regions have been reproduced in silico, including, omp25 and omp2a genes, flanked by primers 25A-25B and 2AB-2AA, respectively. In the omp25 gene, 11 non-synonymous and 24 synonymous mutations have been detected; two deletions: ∆103–108 bp – in В. nosferati, ∆562–597 bp – in В. Ovis; and ACT insertion after 585 bp – in В. vulpis. The variability of the omp2a gene in the studied Brucella strains was significantly higher. 138 SNPs have been identified, of which 60 lead to amino acid substitutions, 2 – form stop codons, and an additional deletion ∆424–561 bp – in В. abortus 1, 2, 4 biovars. Single mutations in the omp2a and omp25 genes had both group specificity – for several species, and unique – for a specific species or biovar of the pathogen. Allelic profiles of the omp25 and omp2a genes have greater resolution than their restriction profiles studied. The identified changes in the structure of the omp25 and omp2a genes correlate with the circulation of individual Brucella species and biovars in the organism of certain carriers. These genes show the presence of deletions, insertions and single polymorphic nucleotides specific to species, groups of species and, in some cases, biovars of the pathogen.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>структурная организация</kwd><kwd>ген omp25</kwd><kwd>ген omp2a</kwd><kwd>нуклеотидная последовательность</kwd><kwd>аллели</kwd><kwd>рестрикционный анализ</kwd><kwd>виды и биовары бруцелл</kwd></kwd-group><kwd-group xml:lang="en"><kwd>structural organization</kwd><kwd>omp25 gene</kwd><kwd>omp2a gene</kwd><kwd>nucleotide sequence</kwd><kwd>alleles</kwd><kwd>restriction analysis</kwd><kwd>Brucella species and biovars</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">LPSN (List of Procariotic names with Standing in Nomenclature). [Электронный ресурс]. 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