NMR backbone resonance assignment of Japanese encephalitis virus capsid protein

NMR backbone resonance assignment of Japanese encephalitis virus capsid protein
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日本脑炎病毒衣壳蛋白的NMR骨架共振归属

DOI:
10.1007/s12104-021-10037-4
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发表时间:
2021-06
影响因子:
0.9
通讯作者:
Conggang Li
Conggang Li
中科院分区:
生物学4区
文献类型:
--
作者:
Yuting Guo;Chendie Yao;Kai Cheng;Qiong Wu;Guohua Xu;Ling Jiang;Conggang Li

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日本脑炎病毒(JEV)与由蚊子传播的西尼罗河病毒(WNV)、登革热病毒(DENV)和黄热病病毒(YFV)同属一科。每年约有6.8万人感染乙脑病毒。在许多亚洲国家,乙脑病毒是病毒性脑炎的主要原因。目前还没有治疗日本脑炎的特效药。衣壳蛋白C是病毒颗粒的核心蛋白。许多研究表明,衣壳蛋白C在黄病毒的生活史中起着重要的作用。虽然JEV衣壳蛋白(JEVC)的结构已经通过X射线结晶学确定,但它如何组装成内核包裹病毒基因组的机制仍然不清楚。更重要的是,晶体结构中缺乏据报道影响其组装的无序的N-末端区域。在构象动力学表征方面,NMR光谱学与其他技术相比具有明显的优势。本文报道了JEVC的主链~1H、~(13)C和~(15)N化学位移归属,并用TALOS~+预测了其在溶液中的二级结构。
Japanese encephalitis virus (JEV) is a flavivirus in the same family as West Nile virus (WNV), dengue virus (DENV) and.yellow fever virus (YFV), which are transmitted by mosquitoes. About 68 thousand people are infected with JEV every.year. In many Asian countries, JEV is the main cause of viral encephalitis. There are no specific antiviral drugs for Japanese.encephalitis. Capsid protein C is the core protein of virus particles. Many studies have revealed that capsid protein C plays an.important role in the life cycle of flaviviruses. Although the structure of JEV capsid protein (JEVC) has been determined by.X-ray crystallography, the mechanism of how it assembles into an inner core to encapsulate the virus genome remains elusive..What’s more, the disordered N-terminal region that is reported to affect its assembly is absent in the crystal structure. NMR.spectroscopy has distinct advantages over other technologies in the characterization of conformational dynamics. Here we.report the backbone 1H, 13C and 15N chemical shift assignments of JEVC by heteronuclear multidimensional spectroscopy.and predict its secondary structure in solution using TALOS+.
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