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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Journal of microbiology, epidemiology and immunobiology</journal-id><journal-title-group><journal-title xml:lang="en">Journal of microbiology, epidemiology and immunobiology</journal-title><trans-title-group xml:lang="ru"><trans-title>Журнал микробиологии, эпидемиологии и иммунобиологии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0372-9311</issn><issn publication-format="electronic">2686-7613</issn><publisher><publisher-name xml:lang="en">Central Research Institute for Epidemiology</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">247</article-id><article-id pub-id-type="doi">10.36233/0372-9311-2018-1-52-57</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>ORIGINAL RESEARCHES</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ОРИГИНАЛЬНЫЕ ИССЛЕДОВАНИЯ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">IDENTIFICATION OF IMMUNOGENIC PROTEINS OF STRAINS OF BACILLUS ANTHRACIS IN MALDI TOF MS</article-title><trans-title-group xml:lang="ru"><trans-title>ИДЕНТИФИКАЦИЯ ИММУНОГЕННЫХ БЕЛКОВ ШТАММОВ BACILLUS ANTHRACIS В MALDITOF MS</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Chervakova</surname><given-names>M. P.</given-names></name><name xml:lang="ru"><surname>Червакова</surname><given-names>М. П.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Sharov</surname><given-names>T. N.</given-names></name><name xml:lang="ru"><surname>Шаров</surname><given-names>Т. Н.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Barkova</surname><given-names>LA. ..</given-names></name><name xml:lang="ru"><surname>Баркова</surname><given-names>И. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Barkov</surname><given-names>A. M.</given-names></name><name xml:lang="ru"><surname>Барков</surname><given-names>А. М.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Viktorov</surname><given-names>D. V.</given-names></name><name xml:lang="ru"><surname>Викторов</surname><given-names>Д. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Toporkov</surname><given-names>A. V.</given-names></name><name xml:lang="ru"><surname>Топорков</surname><given-names>А. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Volgograd State Research Institute for Plague Control</institution></aff><aff><institution xml:lang="ru">Волгоградский научно-исследовательский противочумный институт</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2018-02-28" publication-format="electronic"><day>28</day><month>02</month><year>2018</year></pub-date><volume>95</volume><issue>1</issue><issue-title xml:lang="ru"/><fpage>52</fpage><lpage>57</lpage><history><date date-type="received" iso-8601-date="2019-04-10"><day>10</day><month>04</month><year>2019</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2018, Chervakova M.P., Sharov T.N., Barkova L..., Barkov A.M., Viktorov D.V., Toporkov A.V.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2018, Червакова М.П., Шаров Т.Н., Баркова И.А., Барков А.М., Викторов Д.В., Топорков А.В.</copyright-statement><copyright-year>2018</copyright-year><copyright-holder xml:lang="en">Chervakova M.P., Sharov T.N., Barkova L..., Barkov A.M., Viktorov D.V., Toporkov A.V.</copyright-holder><copyright-holder xml:lang="ru">Червакова М.П., Шаров Т.Н., Баркова И.А., Барков А.М., Викторов Д.В., Топорков А.В.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://microbiol.crie.ru/jour/article/view/247">https://microbiol.crie.ru/jour/article/view/247</self-uri><abstract xml:lang="en"><p>Aim. Identification of obtained in host-simulated conditions immunogenic proteins of isogenic variants of Bacillus anthracis 575/122. Materials and methods. We used culture filtrate of isogenic variants of B. anthracis 575/122: R02 (pXOL pXO2<sup>+</sup>); R01 (pXO1<sup>+</sup> pXO2‘); R00 (pXOL pX02~), obtained in host-simulated conditions. In the one-dimensional polyacrylamide gel electrophoresis and immunoblotting with hyperimmune serums immunodominant proteins, that have been identified in MALDI TOF MS. Results. Immunoblotting revealed proteins with molecular masses in range 97 - 14.1 kDa. 90 kDa protein from strain B. anthracis 575/122 R01 in MALDI TOF MS was identified as protective antigen with 85.810 kDa. Protein with molecular mass 60 kDa was identified as GMP synthase with molecular mass 57.239 kDa. In the culture filtrates of three strains two common antigen were identified: protein with molecular mass 97 kDa, identified as B. anthracis EA 1 with molecular mass 91.361 kDa protein and 45 kDa protein as enolase B. anthracis with molecular mass 46.418 kDa. Conclusion. Thus, the conditions that simulate the host can promote the production of immunodominant proteins of B. anthracis. The data about molecular-weight characteristics of protective antigen and EA 1 protein as well as some of proteases of B. anthracis are confirmed by the MALDI TOF MS. The results can be used for isolation of these proteins to improve the diagnostic and vaccine preparations.</p></abstract><trans-abstract xml:lang="ru"><p>Цель. Идентификация иммуногенных белков штаммов Bacillus anthracis, продуцируемых в условиях, имитирующих организм хозяина. Материалы и методы. В работе использованы культуральные фильтраты изогенных вариантов штамма B.anthracis 575/122: R02 (рХОГ рХО2<sup>+</sup>); R01 (рХО1<sup>+</sup> рХО2‘); R00 (рХОГ рХО2), полученные в условиях, имитирующих организм хозяина. В одномерном электрофорезе и иммуноблоттинге с гипериммунными сыворотками определены иммунодоминантные белки, которые идентифицированы в MALDI TOF MS. Результаты. В иммуноблотинге выявлены белки м.м. 97 - 14,1 кДа. Белок 90 кДа штамма B.anthracis 575/122 R01 в MALDI TOF MS идентифицирован как протективный антиген м.м. 85,810 кДа, белок м.м. 60 - как GMP синтаза м.м. 57,239 кДа. В культуральных фильтратах трех штаммов определено два общих антигена: белок с м.м. 97 кДа, идентифицированный как ЕА 1 В. anthracis м.м. 91,361 кДа и белок м.м. 45 кДа - как энолаза В. anthracis м.м. 46,418 кДа. Заключение. Таким образом, условия, имитирующие организм хозяина, способствуют продукции иммунодоминантных белков В. anthracis. В MALDI TOF MS подтверждены данные по молекулярно-весовой характеристике протективного антигена и белка ЕА1, а также ряда протеаз В. anthracis. Результаты могут быть использованы при выделении этих белков с целью усовершенствования диагностических и вакцинных препаратов.</p></trans-abstract><kwd-group xml:lang="en"><kwd>Bacillus anthracis</kwd><kwd>MALDI TOF MS</kwd><kwd>Bacillus anthracis</kwd><kwd>immunodominant proteins</kwd><kwd>dimensional electrophoresis</kwd><kwd>immunoblotting</kwd><kwd>MALDI TOF MS</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>иммунодоминантные белки</kwd><kwd>одномерный электрофорез</kwd><kwd>иммуноблотганг</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Барков А.М., Новоженина А.В., Порохня С.В., Ткаченко Г.А., Липницкий А.В. Характеристика изогенных вариантов Bacillus anthracis с различным содержанием плазмид вирулентности. 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