In situ structures of the segmented genome and RNA polymerase complex inside a dsRNA virus.
In situ structures of the segmented genome and RNA polymerase complex inside a dsRNA virus.
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dsRNA 病毒内分段基因组和 RNA 聚合酶复合物的原位结构
DOI:
10.1038/nature15767
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发表时间:
2015-11-26
期刊:
影响因子:
64.8
通讯作者:
Zhou, Z. Hong
中科院分区:
文献类型:
--
作者:
Zhang, Xing;Ding, Ke;Yu, Xuekui;Chang, Winston;Sun, Jingchen;Zhou, Z. Hong
Viruses in the Reoviridae, like the triple-shelled human rotavirus and the single-shelled insect cytoplasmic polyhedrosis virus (CPV), all package a genome of segmented double-stranded RNAs (dsRNAs) inside the viral capsid and carry out endogenous messenger RNA synthesis through a transcriptional enzyme complex (TEC). By direct electron-counting cryoelectron microscopy and asymmetric reconstruction, we have determined the organization of the dsRNA genome inside quiescent CPV (q-CPV) and the in situ atomic structures of TEC within CPV in both quiescent and transcribing (t-CPV) states. We show that the ten segmented dsRNAs in CPV are organized with ten TECs in a specific, non-symmetric manner, with each dsRNA segment attached directly to a TEC. The TEC consists of two extensively interacting subunits: an RNA-dependent RNA polymerase (RdRP) and an NTPase VP4. We find that the bracelet domain of RdRP undergoes marked conformational change when q-CPV is converted to t-CPV, leading to formation of the RNA template entry channel and access to the polymerase active site. An amino-terminal helix from each of two subunits of the capsid shell protein (CSP) interacts with VP4 and RdRP.
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影响因子:
6.8
作者:
Choi, Kyung H.;Rossmann, Michael G.
通讯作者:
Rossmann, Michael G.
DOI:
10.1107/s0907444904019158
发表时间:
2004-12-01
影响因子:
2.2
作者:
Emsley, P;Cowtan, K
通讯作者:
Cowtan, K
影响因子:
64.8
作者:
Grimes, JM;Burroughs, JN;Stuart, DI
通讯作者:
Stuart, DI
影响因子:
5.4
作者:
McDonald, Sarah M.;Patton, John T.
通讯作者:
Patton, John T.
DOI:
10.1107/s0907444909052925
发表时间:
2010-02
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Adams PD;Afonine PV;Bunkóczi G;Chen VB;Davis IW;Echols N;Headd JJ;Hung LW;Kapral GJ;Grosse-Kunstleve RW;McCoy AJ;Moriarty NW;Oeffner R;Read RJ;Richardson DC;Richardson JS;Terwilliger TC;Zwart PH
通讯作者:
Zwart PH