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Updated: Jul 29, 2025

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Published on: August 8, 2017

酵母伴手 Hsp70-Ssb 调节各种基于蛋白质的可遗传元素

Lina M Jay-Garcia¹, Joseph L Cornell¹, Rebecca L Howie¹

¹School of Biological Sciences, Georgia Institute of Technology, Atlanta, GA 30332, USA.

International journal of molecular sciences

|May 27, 2023

概括

Hsp70-Ssb伴侣调节酵母子的形成和传播. 它的缺席增强了子聚合,包括压力诱导的[LSB+]和遗传的[STE+],揭示了Ssb作为细胞质粉样蛋白聚合的关键调节者.

科学领域:

分子生物学分子生物学
蛋白质生物化学蛋白质生物化学
酵母遗传学酵母遗传学

背景情况:

子是与疾病和特征相关的自我延续的蛋白质聚合物.
酵母子,如[PSI+],[LSB+],[STE+]和[URE3],通常是基于粉样蛋白的.
伴奏机械,特别是Hsp70-Ssb,对于子的形成和传播至关重要.

研究的目的:

调查Hsp70-Ssb在各种酵母子超出[PSI+]的形成和传播中的作用.
为了确定Ssb是否调节不可传播的蛋白质聚合物 (mnemons).
阐明Ssb作为细胞质粉样蛋白聚合的调节者的功能.

主要方法:

酵母遗传学和子分析.
监测子形成和线粒传播.
研究伴侣突变 (Ssb,Zuo1) 对类表型的影响.

主要成果:

缺少Ssb显著增加了[LSB+]的形成和传播.
热应激导致了没有Ssb的大量[LSB+]细胞积累,表明Ssb降低了压力诱导的子记忆.
此外,Ssb缺乏也增强了[STE+]聚合物的形成和遗传性,并促进了[URE3]子传递.

结论:

Hsp70-Ssb是细胞质粉样蛋白聚合的一般调节器,影响多个酵母子系统.
Ssb作为压力诱导子形成和传播的关键下调调剂.
陪伴机器在控制基特征的忠实性和传播方面发挥着至关重要的作用.

关键词:

他们是Gγ Gγ.一个Lsb2一个Lsb2 在RAC中,RAC是RAC.这就是Ssbb.在Ure2的过程中,Ure2 氨基化物氨基化物热冲击是一种热冲击.记忆器 (mnemon) 是一种记忆器.普里昂是什么意思?普里昂是什么意思?酵母酵母是一种酵母.

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