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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="review-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Ecological genetics</journal-id><journal-title-group><journal-title xml:lang="en">Ecological genetics</journal-title><trans-title-group xml:lang="ru"><trans-title>Экологическая генетика</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1811-0932</issn><issn publication-format="electronic">2411-9202</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">6962</article-id><article-id pub-id-type="doi">10.17816/ecogen15452-59</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Genetic education</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Система генетического образования</subject></subj-group><subj-group subj-group-type="article-type"><subject>Review Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">The role of archaea in the origin of eukaryotes</article-title><trans-title-group xml:lang="ru"><trans-title>Роль архей в происхождении эукариот</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Shestakov</surname><given-names>Sergey V.</given-names></name><name xml:lang="ru"><surname>Шестаков</surname><given-names>Сергей Васильевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>dr. biol. sciences, professor, main researcher</p></bio><bio xml:lang="ru"><p>доктор биологических наук, профессор, академик РАН, главный научный сотрудник</p></bio><email>shestakovgen@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">N. Vavilov Institute of General Genetics, RAS</institution></aff><aff><institution xml:lang="ru">ФГБУН «Институт общей генетики им. Н.И. Вавилова» РАН</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2017-12-25" publication-format="electronic"><day>25</day><month>12</month><year>2017</year></pub-date><volume>15</volume><issue>4</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>52</fpage><lpage>59</lpage><history><date date-type="received" iso-8601-date="2017-09-04"><day>04</day><month>09</month><year>2017</year></date><date date-type="accepted" iso-8601-date="2017-11-12"><day>12</day><month>11</month><year>2017</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2017, Shestakov S.V.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2017, Шестаков С.В.</copyright-statement><copyright-year>2017</copyright-year><copyright-holder xml:lang="en">Shestakov S.V.</copyright-holder><copyright-holder xml:lang="ru">Шестаков С.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/">http://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.eco-vector.com/ecolgenet/article/view/6962">https://journals.eco-vector.com/ecolgenet/article/view/6962</self-uri><abstract xml:lang="en"><p>A key role of particular evolutionary branch of archaea in the emergence of eukaryotic cell is considered on the basis of phylogenomics. Genomes of recently discovered uncultivated proteoarchaea belonging to Lokiarchaea and Asgard-group contain a large sets of eukaryotic-like genes. This allows to suggest that ancient forms of such archaean could participate in symbiotic fusion with bacteria serving as a mitochondrial progenitor. The open questions concerning properties of LECA (so-called last eukaryotic common ancestor) are discussed in the frame of endosymbiotic hypothesis of eukaryogenesis.</p></abstract><trans-abstract xml:lang="ru"><p>В обзоре с позиций филогеномики рассмотрена ключевая роль определенной эволюционной ветви архей в происхождении клетки эукариот. Геномы недавно открытых некультивируемых протеоархей Lokiarchaea и Asgard-группы содержат большие наборы генов, сходных с эукариотическими. Это позволило предположить, что родственные таким группам древние археи могли участвовать в симбиотическом слиянии с бактериями — предшественниками митохондрий. В рамках эндосимбиотической гипотезы эукариогенеза обсуждены открытые вопросы о свойствах LECA (так называемого последнего эукариотического общего предка).</p></trans-abstract><kwd-group xml:lang="en"><kwd>evolution</kwd><kwd>phylogeny</kwd><kwd>archaea</kwd><kwd>origin of eukaryotes</kwd><kwd>comparative genomics</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>эволюция</kwd><kwd>филогения</kwd><kwd>археи</kwd><kwd>происхождение эукариот</kwd><kwd>сравнительная геномика</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена по гранту Программы Президиума РАН «Эволюция органического мира. Роль и влияние планетарных процессов». Подпрограмма «Развитие жизненных и биоcферных процессов».</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>1.	Koonin E. Origin of eukaryotes from within archaea, archaeal eukaryome and bursts of gene gain: eukaryogenesis just made easier? 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