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首页> 外文期刊>Cell cycle >Snf1/AMPK promotes S-phase entrance by controlling CLB5 transcription in budding yeast.
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Snf1/AMPK promotes S-phase entrance by controlling CLB5 transcription in budding yeast.

机译:SNF1 / AMPK通过控制萌芽酵母中的CLB5转录来促进S相入口。

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摘要

The Saccharomyces cerevisiae Snf1 protein kinase has been reported to be required for adaptation to glucose limitation and for growth on non-fermentable carbon sources. Here we present novel findings indicating that Snf1, the key regulator of cellular energy, is also involved in yeast cell cycle control. The lack of Snf1 alpha-catalytic subunit downregulates the growth rate and CLB5 expression, delaying Sld2 phosphorylation and G(1)/S transition, in cells grown in 2%, but not in 5% glucose. A non-phosphorylatable Snf1 rescues the slow growth phenotype, whereas a wild type or a phosphomimetic mutant is required to rescue growth rate and the G(1)/S delay. Using either Snf1 or Swi6 as a bait, a specific interaction of Snf1 with Swi6, the regulatory subunit of MBF, was detected. In conclusion, this report describes a previously unrecognized role for Snf1 in transcriptional modulation of the G(1) to S transition, differing from the reported AMPK role in controlling the G(1)/S transition in multicellular eukaryotes.
机译:据报道,酿酒酵母SNF1蛋白激酶是为了适应葡萄糖限制和对不发酵碳源的生长而需要。在这里,我们提出了表明SNF1,细胞能量的关键调节器的新发现也参与了酵母细胞周期控制。缺乏SNF1α-催化亚基下调生长速率和CLB5表达,延迟SLD2磷酸化和G(1)/℃的转变,细胞生长为2%,但不含5%葡萄糖。不可磷酸化的SNF1拯救缓慢生长表型,而野生型或磷酸化突变体需要抢救生长速率和G(1)/ s延迟。使用SNF1或SWI6作为诱饵,检测SNF1与SWI6,MBF的调节亚基的特异性相互作用。总之,本报告描述了先前未识别的SNF1在G(1)转移调节方面的SNF1的作用,与报告的AMPK作用不同,用于控制多细胞真核生物中的G(1)/ s转变。

著录项

  • 来源
    《Cell cycle》 |2010年第11期|共12页
  • 作者

    Coccetti P;

  • 作者单位

    Department of Biotechnology and Biosciences University of Milano-Bicocca Milano Italy.;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 细胞生物学;
  • 关键词

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