論文

査読有り
2017年5月

Chemical and structural characterization of a model Post-Termination Complex (PoTC) for the ribosome recycling reaction: Evidence for the release of the mRNA by RRF and EF-G

PLOS ONE
  • Nobuhiro Iwakura
  • ,
  • Takeshi Yokoyama
  • ,
  • Fabio Quaglia
  • ,
  • Kaoru Mitsuoka
  • ,
  • Kazuhiro Mio
  • ,
  • Hideki Shigematsu
  • ,
  • Mikako Shirouzu
  • ,
  • Akira Kaji
  • ,
  • Hideko Kaji

12
5
開始ページ
25
終了ページ
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1371/journal.pone.0177972
出版者・発行元
PUBLIC LIBRARY SCIENCE

A model Post-Termination Complex (PoTC) used for the discovery of Ribosome Recycling Factor (RRF) was purified and characterized by cryo-electron microscopic analysis and biochemical methods. We established that the model PoTC has mostly one tRNA, at the P/E or P/P position, together with one mRNA. The structural studies were supported by the biochemical measurement of bound tRNA and mRNA. Using this substrate, we establish that the release of tRNA, release of mRNA and splitting of ribosomal subunits occur during the recycling reaction. Order of these events is tRNA release first followed by mRNA release and splitting almost simultaneously. Moreover, we demonstrate that IF3 is not involved in any of the recycling reactions but simply prevents the re-association of split ribosomal subunits. Our finding demonstrates that the important function of RRF includes the release of mRNA, which is often missed by the use of a short ORF with the Shine-Dalgarno sequence near the termination site.

リンク情報
DOI
https://doi.org/10.1371/journal.pone.0177972
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000402061500047&DestApp=WOS_CPL
URL
http://orcid.org/0000-0002-1655-8231
ID情報
  • DOI : 10.1371/journal.pone.0177972
  • ISSN : 1932-6203
  • ORCIDのPut Code : 45543538
  • Web of Science ID : WOS:000402061500047

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