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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">biob</journal-id><journal-title-group><journal-title xml:lang="ru">Биобезопасность и Биотехнология</journal-title><trans-title-group xml:lang="en"><trans-title>Biosafety and Biotechnology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2707-7241</issn><issn pub-type="epub">2957-5702</issn><publisher><publisher-name>Научно-исследовательский институт проблем биологической безопасности</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">biob-239</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>МЕДИЦИНСКАЯ И ВЕТЕРИНАРНАЯ БИОТЕХНОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MEDICAL AND VETERINARY BIOTECHNOLOGY</subject></subj-group></article-categories><title-group><article-title>Оптимизация условий диализа рекомбинантного белка Omp-19 Brucella spp.</article-title><trans-title-group xml:lang="en"><trans-title></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>Әділова</surname><given-names>Гауһар Сәтқызы</given-names></name></name-alternatives><bio xml:lang="ru"><p>Младший научный сотрудник лаборатории молекулярной биологии и генной инженерии</p></bio><email xlink:type="simple">g.adilova@biosafety.kz</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff xml:lang="ru" id="aff-1"><institution>ТОО «Научно-исследовательский институт проблем биологической безопасности» пгт. Гвардейский, Казахстан.</institution><country>Russian Federation</country></aff><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>30</day><month>06</month><year>2026</year></pub-date><volume>1</volume><issue>26</issue><elocation-id>239</elocation-id><permissions><copyright-statement>Copyright &amp;#x00A9; Әділова Г.С., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Әділова Г.С.</copyright-holder><copyright-holder xml:lang="en">Әділова Г.С.</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.biosafety.kz/jour/article/view/239">https://journal.biosafety.kz/jour/article/view/239</self-uri><abstract><p>Рекомбинантный белок Omp19 Brucella spp. рассматривается как перспективный антиген для разработки диагностических тест-систем и иммунобиологических препаратов, однако получение его растворимой формы остаётся актуальной задачей. Целью настоящего исследования являлась оптимизация условий диализа рекомбинантного белка Omp19 после очистки методом ионно-обменной хроматографии.</p><p>Диализ проводили последовательно в нескольких буферных системах с различным составом солей и стабилизирующих компонентов. Эффективность диализа и растворимость белка оценивали методом ДСН-ПААГ с анализом надосадочных и осадочных фракций при различных температурных режимах хранения. Результаты показали, что при использовании буферов 1-4 рекомбинантный белок преимущественно переходил в нерастворимую форму и обнаруживался в осадке. Для повышения растворимости белка была проведена оптимизация концентрации L-аргинина в составе диализного буфера. Установлено, что применение буфера, содержащего 880 мМ L-аргинина, обеспечивало сохранение белка в растворимой фракции и предотвращало образование видимого осадка.</p><p>Полученные результаты позволяют рекомендовать использование 880 мМ L-аргинина для стабилизации рекомбинантного белка Omp19 на этапах очистки и хранения, что имеет практическое значение для дальнейшего применения белка в диагностических и биотехнологических исследованиях.</p></abstract><kwd-group xml:lang="ru"><kwd>Brucella spp</kwd><kwd>Omp19</kwd><kwd>рекомбинантный белок</kwd><kwd>диализ</kwd><kwd>ДСН-ПААГ.</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">ТОО «Научно-исследовательский институт проблем биологической безопасности» пгт. 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