Transient oligomerization of the SARS-CoV N protein--implication for virus ribonucleoprotein packaging.
Transient oligomerization of the SARS-CoV N protein--implication for virus ribonucleoprotein packaging.
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DOI:
10.1371/journal.pone.0065045
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发表时间:
2013
期刊:
影响因子:
3.7
通讯作者:
Huang TH
中科院分区:
文献类型:
--
作者:
Chang CK;Chen CM;Chiang MH;Hsu YL;Huang TH
The nucleocapsid (N) phosphoprotein of the severe acute respiratory syndrome coronavirus (SARS-CoV) packages the viral genome into a helical ribonucleocapsid and plays a fundamental role during viral self-assembly. The N protein consists of two structural domains interspersed between intrinsically disordered regions and dimerizes through the C-terminal structural domain (CTD). A key activity of the protein is the ability to oligomerize during capsid formation by utilizing the dimer as a building block, but the structural and mechanistic bases of this activity are not well understood. By disulfide trapping technique we measured the amount of transient oligomers of N protein mutants with strategically located cysteine residues and showed that CTD acts as a primary transient oligomerization domain in solution. The data is consistent with the helical oligomer packing model of N protein observed in crystal. A systematic study of the oligomerization behavior revealed that altering the intermolecular electrostatic repulsion through changes in solution salt concentration or phosphorylation-mimicking mutations affects oligomerization propensity. We propose a biophysical mechanism where electrostatic repulsion acts as a switch to regulate N protein oligomerization.
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DOI:
10.1016/j.str.2005.08.021
发表时间:
2005-12
期刊:
Structure (London, England : 1993)
影响因子:
--
作者:
Fan H;Ooi A;Tan YW;Wang S;Fang S;Liu DX;Lescar J
通讯作者:
Lescar J
影响因子:
2.9
作者:
Ceres, P;Zlotnick, A
通讯作者:
Zlotnick, A
影响因子:
2.9
作者:
Huang, QL;Yu, LP;Olejniczak, ET
通讯作者:
Olejniczak, ET
影响因子:
2.9
作者:
Luo, Haibin;Chen, Jing;Jiang, Hualiang
通讯作者:
Jiang, Hualiang
影响因子:
5.6
作者:
Takeda M;Chang CK;Ikeya T;Güntert P;Chang YH;Hsu YL;Huang TH;Kainosho M
通讯作者:
Kainosho M