
Тонкая регуляция экспрессии генов осуществляется посредством конкуренции транскрипционных факторов за промоторы, что обеспечивает своевременный ответ клетки на изменения условий среды. Ген PHO3 дрожжей S. cerevisiae кодирует конститутивную кислую фосфатазу. В данной работе изучали генетический контроль экспрессии гена PHO3 в зависимости от источника азота. Показано, что уровень экспрессии гена снижается на среде с «бедным» источником азота, мочевиной. Выявлены возможные механизмы регуляции экспрессии гена PHO3 при участии репрессора генов азотного метаболизма Gzf3p и убиквитин-лигазы Rsp5p.
Delicate regulation of gene expression is performed through transcriptional factors competition for promoters that provides punctual cell response to environmental changes. Gene PHO3 of yeast S. cerevisiae encodes the constitutive acid phosphatase. In this work we researched genetic control of the gene PHO3 expression in response to nitrogen source in medium. PHO3 expression level was proved to decrease while yeast using poor nitrogen source like urea. Possible regulatory mechanisms for gene PHO3 were revealed involving repressor of nitrogen regulated genes Gzf3p and ubiquitin ligase Rsp5p
КИСЛЫЕ ФОСФАТАЗЫ, АЗОТНАЯ КАТАБОЛИТНАЯ РЕПРЕССИЯ, GATA-ФАКТОРЫ, ТИАМИН
КИСЛЫЕ ФОСФАТАЗЫ, АЗОТНАЯ КАТАБОЛИТНАЯ РЕПРЕССИЯ, GATA-ФАКТОРЫ, ТИАМИН
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