...
首页> 外文期刊>Molecular and Cellular Biology >hpr1Δ Affects Ribosomal DNA Recombination and Cell Life Span in Saccharomyces cerevisiae
【24h】

hpr1Δ Affects Ribosomal DNA Recombination and Cell Life Span in Saccharomyces cerevisiae

机译:hpr1Δ影响酿酒酵母的核糖体DNA重组和细胞寿命。

获取原文
           

摘要

Multiple genetic pathways have been shown to regulate life span and aging in the yeast Saccharomyces cerevisiae. Here we show that loss of a component of the RNA polymerase II complex, Hpr1p, results in a decreased life span. Although hpr1Δ mutants have an increased rate of recombination within the ribosomal DNA (rDNA) array, this is not accompanied by an increase in extrachromosomal rDNA circles (ERCs). Analyses of mutants that affect replication of the rDNA array and suppressors that reverse the phenotypes of the hpr1Δ mutant show that the reduced life span is associated with increased genomic instability but not with increased ERC formation. The hpr1Δ mutant acts in a pathway distinct from previously described mutants that reduce life span.
机译:已显示出多种遗传途径可调控酵母菌(Saccharomyces cerevisiae)的寿命和衰老。在这里,我们显示RNA聚合酶II复合物Hpr1p的成分丢失会导致寿命缩短。尽管 hpr1 Δ突变体在核糖体DNA(rDNA)阵列中的重组率增加,但是并没有伴随着染色体外rDNA环(ERC)的增加。影响rDNA阵列复制的突变体和逆转 hpr1 Δ突变体表型的抑制剂的分析表明,寿命的缩短与基因组不稳定性的增加有关,而与ERC形成的增加无关。 hpr1 Δ突变体的作用途径不同于先前描述的缩短寿命的突变体。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号