Structural basis for ribosome recycling by RRF and tRNA.
Structural basis for ribosome recycling by RRF and tRNA.
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RRF 和 tRNA 回收核糖体的结构基础
DOI:
10.1038/s41594-019-0350-7
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发表时间:
2020-01
影响因子:
16.8
通讯作者:
Gagnon, Matthieu G.
中科院分区:
文献类型:
--
作者:
Zhou, Dejian;Tanzawa, Takehito;Lin, Jinzhong;Gagnon, Matthieu G.
The bacterial ribosome is recycled into subunits by two conserved proteins, elongation factor G (EF-G) and the ribosome recycling factor (RRF). The molecular basis for ribosome recycling by RRF and EF-G remains unclear. Here, we report the crystal structure of a postterminationThermus thermophilus70S ribosome complexed with EF-G, RRF and two transfer RNAs at a resolution of 3.5 Å. The deacylated tRNA in the peptidyl (P) site moves into a previously unsuspected state of binding (peptidyl/recycling, p/R) that is analogous to that seen during initiation. The terminal end of the p/R-tRNA forms nonfavorable contacts with the 50S subunit while RRF wedges next to central inter-subunit bridges, illuminating the active roles of tRNA and RRF in dissociation of ribosomal subunits. The structure uncovers a missing snapshot of tRNA as it transits between the P and exit (E) sites, providing insights into the mechanisms of ribosome recycling and tRNA translocation.
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DOI:
10.1126/science.1240585
发表时间:
2013-11-15
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
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通讯作者:
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DOI:
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发表时间:
2004-12-01
影响因子:
2.2
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通讯作者:
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DOI:
10.1126/science.1202692
发表时间:
2011-05-20
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
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通讯作者:
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DOI:
10.1126/science.1179709
发表时间:
2009-10-30
期刊:
Science (New York, N.Y.)
影响因子:
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DOI:
10.1107/s0907444902016657
发表时间:
2002-11-01
影响因子:
2.2
作者:
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通讯作者:
Terwilliger, TC