首页> 美国卫生研究院文献>The Journal of Biophysical and Biochemical Cytology >Recruitment of Atg9 to the preautophagosomal structure by Atg11 is essential for selective autophagy in budding yeast
【2h】

Recruitment of Atg9 to the preautophagosomal structure by Atg11 is essential for selective autophagy in budding yeast

机译:Atg11募集Atg9到前自噬体结构对于发芽酵母中的选择性自噬至关重要

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务,本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文,但由于OA文献来源多样且变更频繁,仍可能出现获取不到、文献不完整或与标题不符等情况,如果获取不到我们将提供退款服务。请知悉。

摘要

Autophagy is a conserved degradative pathway that is induced in response to various stress and developmental conditions in eukaryotic cells. It allows the elimination of cytosolic proteins and organelles in the lysosome/vacuole. In the yeast Saccharomyces cerevisiae, the integral membrane protein Atg9 (autophagy-related protein 9) cycles between mitochondria and the preautophagosomal structure (PAS), the nucleating site for formation of the sequestering vesicle, suggesting a role in supplying membrane for vesicle formation and/or expansion during autophagy. To better understand the mechanisms involved in Atg9 cycling, we performed a yeast two-hybrid–based screen and identified a peripheral membrane protein, Atg11, that interacts with Atg9. We show that Atg11 governs Atg9 cycling through the PAS during specific autophagy. We also demonstrate that the integrity of the actin cytoskeleton is essential for correct targeting of Atg11 to the PAS. We propose that a pool of Atg11 mediates the anterograde transport of Atg9 to the PAS that is dependent on the actin cytoskeleton during yeast vegetative growth.
机译:自噬是一种保守的降解途径,可响应真核细胞中的各种应激和发育条件而被诱导。它可以消除溶酶体/真空中的胞质蛋白和细胞器。在酿酒酵母中,完整的膜蛋白Atg9(自噬相关蛋白9)在线粒体和前自噬体结构(PAS)(螯合小泡形成的成核位点)之间循环,提示在为小泡形成和/或供应膜提供作用或在自噬过程中膨胀。为了更好地了解参与Atg9循环的机制,我们进行了基于酵母两杂交的筛选,并鉴定了与Atg9相互作用的外周膜蛋白Atg11。我们显示Atg11在特定的自噬过程中控制通过PAS的Atg9循环。我们还证明,肌动蛋白细胞骨架的完整性对于将Atg11正确定位到PAS至关重要。我们建议Att11池介导Atg9到PAS的顺行运输,PAS依赖于酵母营养生长期间的肌动蛋白细胞骨架。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

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