The nucleocapsid protein of coronavirus infectious bronchitis virus: crystal structure of its N-terminal domain and multimerization properties.

The nucleocapsid protein of coronavirus infectious bronchitis virus: crystal structure of its N-terminal domain and multimerization properties.
复制标题

DOI:
10.1016/j.str.2005.08.021
复制
发表时间:
2005-12
期刊:
Structure (London, England : 1993)
影响因子:
--
通讯作者:
Lescar J
Lescar J
中科院分区:
其他
文献类型:
--
作者:
Fan H;Ooi A;Tan YW;Wang S;Fang S;Liu DX;Lescar J

文献摘要

参考文献

被引文献

相似文献

冠状病毒核衣壳(N)蛋白将病毒基因组RNA包装成核糖核蛋白复合物。因此,N蛋白和RNA之间的相互作用对于感染性病毒颗粒的组装至关重要。冠状病毒传染性支气管炎病毒(IBV)45 kDa重组核衣壳N蛋白对蛋白水解高度敏感。我们获得了跨越其N-末端残基29-160的14.7kDa的稳定片段(IBV-N29-160)。与严重急性呼吸综合征病毒(SARS-CoV)N蛋白的N端RNA结合结构域(SARS-N45-181)一样,IBV-N29-160片段在1.85 nm分辨率下的晶体结构显示了一个由五链反平行β折叠组成的蛋白核心,该折叠具有带正电荷的β发夹延伸和疏水平台,可能参与RNA结合。交联研究表明IBV-N的二聚体、四聚体和更高的多聚体的形成。提出了一种冠状病毒外壳形成的模型,其中IBV-N的C-末端结构域的二聚化导致IBV-核衣壳蛋白的寡聚化和病毒RNA缩合。
The coronavirus nucleocapsid (N) protein packages viral genomic RNA into a ribonucleoprotein complex. Interactions between N proteins and RNA are thus crucial for the assembly of infectious virus particles. The 45 kDa recombinant nucleocapsid N protein of coronavirus infectious bronchitis virus (IBV) is highly sensitive to proteolysis. We obtained a stable fragment of 14.7 kDa spanning its N-terminal residues 29–160 (IBV-N29-160). Like the N-terminal RNA binding domain (SARS-N45-181) of the severe acute respiratory syndrome virus (SARS-CoV) N protein, the crystal structure of the IBV-N29-160 fragment at 1.85 Å resolution reveals a protein core composed of a five-stranded antiparallel β sheet with a positively charged β hairpin extension and a hydrophobic platform that are probably involved in RNA binding. Crosslinking studies demonstrate the formation of dimers, tetramers, and higher multimers of IBV-N. A model for coronavirus shell formation is proposed in which dimerization of the C-terminal domain of IBV-N leads to oligomerization of the IBV-nucleocapsid protein and viral RNA condensation.
DOI: 10.1021/bi036155b
发表时间: 2004-05-25
期刊: BIOCHEMISTRY
影响因子: 2.9
作者:
Huang, QL;Yu, LP;Olejniczak, ET
通讯作者: Olejniczak, ET
DOI: 10.1073/pnas.0400576101
发表时间: 2004-06-01
影响因子: 11.1
作者:
Bosch, BJ;Martina, BEE;Rottier, PJM
通讯作者: Rottier, PJM
DOI: 10.1107/s0907444998003254
发表时间: 1998-09-01
期刊: ACTA CRYSTALLOGRAPHICA SECTION D-BIOLOGICAL CRYSTALLOGRAPHY
影响因子: --
作者:
Brunger, AT;Adams, PD;Warren, GL
通讯作者: Warren, GL
DOI: 10.1016/j.str.2003.09.018
发表时间: 2003-11
期刊: Structure (London, England : 1993)
影响因子: --
作者:
Doan DN;Dokland T
通讯作者: Dokland T
DOI: 10.1016/j.str.2004.04.024
发表时间: 2004-07
期刊: Structure (London, England : 1993)
影响因子: --
作者:
Dokland T;Walsh M;Mackenzie JM;Khromykh AA;Ee KH;Wang S
通讯作者: Wang S