Puf6 primes 60S pre-ribosome nuclear export at low temperature.

Puf6 primes 60S pre-ribosome nuclear export at low temperature.
复制标题

DOI:
10.1038/s41467-021-24964-2
复制
发表时间:
2021-08-04
影响因子:
16.6
通讯作者:
Panse VG
Panse VG
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Gerhardy S;Oborská-Oplová M;Gillet L;Börner R;van Nues R;Leitner A;Michel E;Petkowski JJ;Granneman S;Sigel RKO;Aebersold R;Panse VG

文献摘要

参考文献

被引文献

相似文献

在核糖体组装期间,生产性核糖体RNA(rRNA)压缩需要在远距离二级结构元件之间建立正确的三级接触。在这里,我们定量酵母蛋白质组对低温(LT)的反应,这是一种异常错配RNA折叠中间体积累的条件。我们表明,在LT,酵母细胞在全球范围内提高其核糖体组装机器的生产。我们发现,LT诱导的组装因子,Puf6,结合到新生的催化RNA丰富的亚基接口内的60 S前核糖体,在一个网站,最终加载核输出装置。EnergyFörster共振能量转移研究表明,Puf 6模拟Mg 2+的作用,以引导一种独特的长距离三级接触,以压缩rRNA。在LT中,puf6突变体在细胞核中积累60S前核糖体,从而揭示了Puf6介导的rRNA压缩作为一种关键的温度调节救援机制,其对抗rRNA错误折叠以引发输出能力。核糖体的生物发生主要依赖于适当的rRNA折叠,这是一个由分子伴侣辅助的过程。在这里,作者揭示了Puf6如何在低温下促进正确的rRNA折叠,这是一种错误配对的RNA折叠中间体经常积累的条件。
Productive ribosomal RNA (rRNA) compaction during ribosome assembly necessitates establishing correct tertiary contacts between distant secondary structure elements. Here, we quantify the response of the yeast proteome to low temperature (LT), a condition where aberrant mis-paired RNA folding intermediates accumulate. We show that, at LT, yeast cells globally boost production of their ribosome assembly machinery. We find that the LT-induced assembly factor, Puf6, binds to the nascent catalytic RNA-rich subunit interface within the 60S pre-ribosome, at a site that eventually loads the nuclear export apparatus. Ensemble Förster resonance energy transfer studies show that Puf6 mimics the role of Mg2+ to usher a unique long-range tertiary contact to compact rRNA. At LT, puf6 mutants accumulate 60S pre-ribosomes in the nucleus, thus unveiling Puf6-mediated rRNA compaction as a critical temperature-regulated rescue mechanism that counters rRNA misfolding to prime export competence. Ribosome biogenesis is crucially dependent on proper rRNA folding, a process assisted by chaperones. Here the authors reveal how Puf6 promotes correct rRNA folding at low temperature, a condition where mis-paired RNA folding intermediates frequently accumulate.
DOI: 10.1038/s41580-019-0136-0
发表时间: 2019-08
期刊: Nature reviews. Molecular cell biology
影响因子: --
作者:
Ganser LR;Kelly ML;Herschlag D;Al-Hashimi HM
通讯作者: Al-Hashimi HM
DOI: 10.1101/gad.9.5.626
发表时间: 1995-03-01
影响因子: 10.5
作者:
DAMMEL, CS;NOLLER, HF
通讯作者: NOLLER, HF
DOI: 10.1038/nature12890
发表时间: 2014-01-23
期刊: NATURE
影响因子: 64.8
作者:
Greber, Basil J.;Boehringer, Daniel;Ban, Nenad
通讯作者: Ban, Nenad
DOI: 10.1038/nsmb.3132
发表时间: 2016-01-01
影响因子: 16.8
作者:
Barrio-Garcia, Clara;Thoms, Matthias;Hurt, Ed
通讯作者: Hurt, Ed
DOI: 10.1101/gad.1189004
发表时间: 2004-06-15
影响因子: 10.5
作者:
Gu, W;Deng, YF;Singer, RH
通讯作者: Singer, RH