The structure of a plant-specific partitivirus capsid reveals a unique coat protein domain architecture with an intrinsically disordered protrusion.
The structure of a plant-specific partitivirus capsid reveals a unique coat protein domain architecture with an intrinsically disordered protrusion.
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植物特异性partitivirus衣壳的结构揭示了一个独特的外壳蛋白结构域的架构与内在的无序突起。
DOI:
10.1038/s42003-021-02687-w
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发表时间:
2021-10-06
影响因子:
5.9
通讯作者:
Sainsbury F
中科院分区:
文献类型:
--
作者:
Byrne M;Kashyap A;Esquirol L;Ranson N;Sainsbury F
Persistent plant viruses may be the most common viruses in wild plants. A growing body of evidence for mutualism between such viruses and their hosts, suggests that they play an important role in ecology and agriculture. Here we present the capsid structure of a plant-specific partitivirus, Pepper cryptic virus 1, at 2.9 Å resolution by Cryo-EM. Structural features, including the T = 1 arrangement of 60 coat protein dimers, are shared with fungal partitiviruses and the picobirnavirus lineage of dsRNA viruses. However, the topology of the capsid is markedly different with protrusions emanating from, and partly comprising, the binding interface of coat protein dimers. We show that a disordered region at the apex of the protrusion is not required for capsid assembly and represents a hypervariable site unique to, and characteristic of, the plant-specific partitiviruses. These results suggest a structural basis for the acquisition of additional functions by partitivirus coat proteins that enables mutualistic relationships with diverse plant hosts. Byrne et al determine the structure of Pepper cryptic virus 1 by Cryo-EM. They identify a disordered region that forms the outermost portion of the deltapartitivirus capsid protrusion that is characteristic of the plant-specific genus.
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影响因子:
16.6
作者:
Hesketh EL;Saunders K;Fisher C;Potze J;Stanley J;Lomonossoff GP;Ranson NA
通讯作者:
Ranson NA
影响因子:
5.4
作者:
Cross, Shaun T.;Maertens, Bernadette L.;Stenglein, Mark D.
通讯作者:
Stenglein, Mark D.
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
DOI:
10.1038/nsb844
发表时间:
2002-10-01
期刊:
NATURE STRUCTURAL BIOLOGY
影响因子:
--
作者:
Naitow, H;Tang, JH;Johnson, JE
通讯作者:
Johnson, JE
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