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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">vavilov</journal-id><journal-title-group><journal-title xml:lang="ru">Вавиловский журнал генетики и селекции</journal-title><trans-title-group xml:lang="en"><trans-title>Vavilov Journal of Genetics and Breeding</trans-title></trans-title-group></journal-title-group><issn pub-type="epub">2500-3259</issn><publisher><publisher-name>Institute of Cytology and Genetics of Siberian Branch of the RAS</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.18699/VJ18.338</article-id><article-id custom-type="elpub" pub-id-type="custom">vavilov-1371</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>ГЕНЕТИЧЕСКИЕ РЕСУРСЫ РАСТЕНИЙ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PLANT GENETICS RESOUCES</subject></subj-group></article-categories><title-group><article-title>ВНУТРИВИДОВОЙ ПОЛИМОРФИЗМ ГЕНА САХАРОЗОСИНТАЗЫ Sus1 У ОБРАЗЦОВ Pisum sativum L.</article-title><trans-title-group xml:lang="en"><trans-title>INTRASPECIFIC VARIABILITY OF THE Sus1 SUCROSE SYNTHASE GENE IN Pisum sativum ACCESSIONS</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>Дьяченко</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Dyachenko</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><email xlink:type="simple">dyachenko-el@yandex.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>Слугина</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Slugina</surname><given-names>M. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Кафедра биотехнологии МГУ им. М.В. Ломоносова</p></bio><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Федеральный исследовательский центр «Фундаментальные основы биотехнологии» РАН<country>Россия</country></aff><aff xml:lang="en">Federal Research Center “Fundamentals of Biotechnology” RAS,<country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru">Федеральный исследовательский центр «Фундаментальные основы биотехнологии» РАН; Московский государственный университет им. М.В. Ломоносова<country>Россия</country></aff><aff xml:lang="en">Federal Research Center “Fundamentals of Biotechnology” RAS; Lomonosov Moscow State University<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2018</year></pub-date><pub-date pub-type="epub"><day>21</day><month>03</month><year>2018</year></pub-date><volume>22</volume><issue>1</issue><fpage>108</fpage><lpage>114</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Дьяченко Е.А., Слугина М.А., 2018</copyright-statement><copyright-year>2018</copyright-year><copyright-holder xml:lang="ru">Дьяченко Е.А., Слугина М.А.</copyright-holder><copyright-holder xml:lang="en">Dyachenko E.A., Slugina M.A.</copyright-holder><license 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://vavilov.elpub.ru/jour/article/view/1371">https://vavilov.elpub.ru/jour/article/view/1371</self-uri><abstract><p> </p><p>Горох посевной Pisum sativum широко культивируется в России и в мире. Продуктивность гороха во многом зависит от его способности образовывать симбиоз с клубеньковыми бактериями. Ранее было показано, что на симбиотическую активность гороха оказывает существенное влияние работа сахаролитических ферментов. Одним из важнейших ферментов углеводного метаболизма является сахарозосинтаза Sus1, которая осуществляет реакцию обратимого гидролиза сахарозы до УДФ-глюкозы и фруктозы. В настоящей статье охарактеризована внутривидовая вариабельность гена Sus1 у 14 образцов гороха Pisum sativum. Длина полученных генов варьировала от 3514 до 3532 п.н. Все гены имели сходную структуру и состояли из 13 экзонов и 12 интронов и по своему строению были отнесены к SUS1-группе двудольных растений. В составе нуклеотидных последовательностей выявлено 125 SNP. Интронные последовательности помимо единичных нуклеотидных замен содержали шесть инделей, вследствие чего их протяженность варьировала от 1093 до 1111 п.н. Наиболее вариабельным оказался интрон III. В кодирующих последовательностях найдено 47 SNP, при этом наиболее вариабельным у P. sativum оказался экзон II. Среди выявленных в экзонах единичных замен 16 приводили к замещению аминокислотных остатков, при этом шесть замещений потенциально могут влиять на функционирование белка. В составе транслированной аминокислотной последовательности выявлены активные сайты и консервативные мотивы, последовательности которых инвариантны у всех исследуемых образцов. На основе биоинформационного анализа аминокислотной последовательности предложена гипотетическая модель третичной структуры белка Sus1. Согласно этой модели, белок представляет собой тетрамер, каждая субъединица которого имеет трехдоменную структуру. В результате проведенного филогенетического анализа с использованием полученных последовательностей, а также известных гомологов генов сахарозосинтаз бобовых было показано, что гены Sus1 и Sus3 эволюционно ближе друг к другу, чем к Sus2. Также выдвинута гипотеза о том, что гены семейства сахарозосинтаз дивергировали раньше, чем произошло разделение бобовых на виды.</p></abstract><trans-abstract xml:lang="en"><p>The pea Pisum sativum is widely cultivated in Russia as well as over the world. Pea productivity depends on the ability of the pea plant to get into a symbiosis with nodule bacteria. It was previously shown that the strength of the symbiotic activity depends on the activity of plant sucrose cleavage enzymes. Sucrose synthase Sus1 is one of the most important enzymes involved in carbohydrate metabolism. Sucrose synthase cleaves sucrose into UDP-glucose and fructose. This paper is devoted to characterization of Sus1 gene intraspecific variability in 14 Pisum sativum accessions. The length of the identified Sus1 gene varied from 3514 bp to 3532 bp. All identified genes had a similar structure and contained 13 exons and 12 introns. According to their structure, they were assigned to the SUS1-group of dicotyledonous plants. In nucleotide sequences, 125 SNPs were identified. In addition to SNPs, intron sequences contained six indels, thus their length varied from 1093 bp to 1111 bp. The most variable was the intron III. In coding sequences, 47 SNPs were found, wherein the most variable was the exon II. 16 exon SNPs led to amino acid substitutions. Six of them were deleterious and may potentially influence protein folding and stability. All the conservative motifs and active sites were detected in the translated amino acid sequences. It was shown that their sequences were invariable in all the tested accessions. Computational analysis of the amino acid sequences has predicted Sus1 tertiary structure. The protein is a tetramer and each subunit in its turn consists of three domains. The phylogenetic analysis using identified Pisum Sus1 sequences and homologous sucrose synthase genes revealed that the Sus1 and Sus3 genes are closer to each other than to Sus2. It was also proposed that the sucrose synthase family genes had diverged before legumes split into species.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>Pisum sativum</kwd><kwd>сахарозосинтаза</kwd><kwd>нуклеотидная вариабельность</kwd><kwd>замещения аминокислотных остатков</kwd><kwd>третичная структура Sus1</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Pisum sativum</kwd><kwd>sucrose synthase</kwd><kwd>nucleotide variability</kwd><kwd>amino acid substitutions</kwd><kwd>Sus1 tertiary structure</kwd></kwd-group><funding-group xml:lang="en"><funding-statement>Russian Foundation for Basic Research, project 16-34-00981mol_a and by State Budgeted Project 0104-2014-0210 (State Registration No. 01201371086). Plants were grown in a phytotron. Sequencing was conducted at the Bioengineering Shared Access Center, Research Center for Biotechnology, Russian Academy of Sciences</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Barratt D.H.P., Barber L., Kruger N.J., Smith A.M., Wang T.L., Martin C. Multiple, distinct isoforms of sucrose synthase in pea. Plant Physiol. 2001;127:655-664.</mixed-citation><mixed-citation xml:lang="en">Barratt D.H.P., Barber L., Kruger N.J., Smith A.M., Wang T.L., Martin C. Multiple, distinct isoforms of sucrose synthase in pea. Plant Physiol. 2001;127:655-664.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Baud S., Vaultier M.-N., Rochat C. Structure and expression profile of the sucrose synthase multigene family in Arabidopsis. J. Exp. 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