Cryo-EM structure of an early precursor of large ribosomal subunit reveals a half-assembled intermediate.
Cryo-EM structure of an early precursor of large ribosomal subunit reveals a half-assembled intermediate.
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大核糖体亚基早期前体的冷冻电镜结构揭示了半组装的中间体。
DOI:
10.1007/s13238-018-0526-7
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发表时间:
2019-03
期刊:
影响因子:
21.1
通讯作者:
Ye K
中科院分区:
文献类型:
--
作者:
Zhou D;Zhu X;Zheng S;Tan D;Dong MQ;Ye K
Assembly of eukaryotic ribosome is a complicated and dynamic process that involves a series of intermediates. It is unknown how the highly intertwined structure of 60S large ribosomal subunits is established. Here, we report the structure of an early nucleolar pre-60S ribosome determined by cryo-electron microscopy at 3.7 Å resolution, revealing a half-assembled subunit. Domains I, II and VI of 25S/5.8S rRNA pack tightly into a native-like substructure, but domains III, IV and V are not assembled. The structure contains 12 assembly factors and 19 ribosomal proteins, many of which are required for early processing of large subunit rRNA. The Brx1-Ebp2 complex would interfere with the assembly of domains IV and V. Rpf1, Mak16, Nsa1 and Rrp1 form a cluster that consolidates the joining of domains I and II. Our structure reveals a key intermediate on the path to establishing the global architecture of 60S subunits. The online version of this article (10.1007/s13238-018-0526-7) contains supplementary material, which is available to authorized users.
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影响因子:
14.9
作者:
Asano N;Kato K;Nakamura A;Komoda K;Tanaka I;Yao M
通讯作者:
Yao M
影响因子:
14.9
作者:
Dembowski JA;Kuo B;Woolford JL Jr
通讯作者:
Woolford JL Jr
DOI:
10.1261/rna.062901.117
发表时间:
2017-12
期刊:
RNA (New York, N.Y.)
影响因子:
--
作者:
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通讯作者:
Conti E
影响因子:
10.5
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通讯作者:
Woolford JL Jr
影响因子:
64.5
作者:
Kater L;Thoms M;Barrio-Garcia C;Cheng J;Ismail S;Ahmed YL;Bange G;Kressler D;Berninghausen O;Sinning I;Hurt E;Beckmann R
通讯作者:
Beckmann R