Puf6 primes 60S pre-ribosome nuclear export at low temperature.
Puf6 primes 60S pre-ribosome nuclear export at low temperature.
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DOI:
10.1038/s41467-021-24964-2
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发表时间:
2021-08-04
影响因子:
16.6
通讯作者:
Panse VG
中科院分区:
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
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.
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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
影响因子:
10.5
作者:
DAMMEL, CS;NOLLER, HF
通讯作者:
NOLLER, HF
影响因子:
64.8
作者:
Greber, Basil J.;Boehringer, Daniel;Ban, Nenad
通讯作者:
Ban, Nenad
影响因子:
16.8
作者:
Barrio-Garcia, Clara;Thoms, Matthias;Hurt, Ed
通讯作者:
Hurt, Ed
影响因子:
10.5
作者:
Gu, W;Deng, YF;Singer, RH
通讯作者:
Singer, RH