Genomic RNA Elements Drive Phase Separation of the SARS-CoV-2 Nucleocapsid.

Genomic RNA Elements Drive Phase Separation of the SARS-CoV-2 Nucleocapsid.
复制标题

DOI:
10.1016/j.molcel.2020.11.041
复制
发表时间:
2020-12-17
期刊:
影响因子:
16
通讯作者:
Gladfelter AS
Gladfelter AS
中科院分区:
生物学1区
文献类型:
--
作者:
Iserman C;Roden CA;Boerneke MA;Sealfon RSG;McLaughlin GA;Jungreis I;Fritch EJ;Hou YJ;Ekena J;Weidmann CA;Theesfeld CL;Kellis M;Troyanskaya OG;Baric RS;Sheahan TP;Weeks KM;Gladfelter AS

文献摘要

参考文献

被引文献

相似文献

我们报道了SARS-CoV-2核衣壳蛋白(N蛋白)与病毒RNA进行液-液相分离(LLPS)。N-蛋白在生理缓冲液条件下与特定RNA基因组元件缩合,并且在人体温度(33°C和37°C)下缩合增强,在室温(22°C)下缩合减少。特定基因组区域中的RNA序列和结构调节N-蛋白质缩合,而其他基因组区域促进缩合物溶解,从而潜在地防止大基因组的聚集。在低浓度下,N-蛋白优先交联到以单链RNA为特征的特定区域,该区域两侧是结构化元件,这些特征指定了N-蛋白结合位点的位置、数量和强度(化合价)。液态N蛋白浓缩物在哺乳动物细胞中以浓度依赖性方式形成,并且可以被小分子改变。N-蛋白的缩合是RNA序列和结构特异性的,对人体温度敏感,并且可以用小分子操作,因此提出了用于鉴定对SARS-CoV-2有效的抗病毒化合物的可筛选的方法。伊瑟曼和罗登等人证明SARS-CoV-2核衣壳(N-蛋白)与病毒RNA的相分离(LLPS)。病毒RNA序列根据N蛋白与基因组RNA的结合模式促进或对抗相分离。LLPS启动序列出现在基因组的5′端和3′端,提示基因组包装作用。
We report that the SARS-CoV-2 nucleocapsid protein (N-protein) undergoes liquid-liquid phase separation (LLPS) with viral RNA. N-protein condenses with specific RNA genomic elements under physiological buffer conditions and condensation is enhanced at human body temperatures (33°C and 37°C) and reduced at room temperature (22°C). RNA sequence and structure in specific genomic regions regulate N-protein condensation while other genomic regions promote condensate dissolution, potentially preventing aggregation of the large genome. At low concentrations, N-protein preferentially crosslinks to specific regions characterized by single-stranded RNA flanked by structured elements and these features specify the location, number, and strength of N-protein binding sites (valency). Liquid-like N-protein condensates form in mammalian cells in a concentration-dependent manner and can be altered by small molecules. Condensation of N-protein is RNA sequence and structure specific, sensitive to human body temperature, and manipulatable with small molecules, and therefore presents a screenable process for identifying antiviral compounds effective against SARS-CoV-2. Iserman and Roden et al. demonstrate phase separation (LLPS) of SARS-CoV-2 nucleocapsid (N-protein) with viral RNA. Viral RNA sequences promote or oppose phase separation depending on binding patterns of N-protein with genomic RNA. LLPS-promoting sequences occur at 5′ and 3′ ends of the genome, suggestive of a genome packaging role.
DOI: 10.1016/j.molcel.2018.02.004
发表时间: 2018-03-15
期刊: Molecular cell
影响因子: 16
作者:
Dao TP;Kolaitis RM;Kim HJ;O'Donovan K;Martyniak B;Colicino E;Hehnly H;Taylor JP;Castañeda CA
通讯作者: Castañeda CA
DOI: 10.1093/bioinformatics/btp250
发表时间: 2009-08-01
期刊: Bioinformatics (Oxford, England)
影响因子: --
作者:
Darty K;Denise A;Ponty Y
通讯作者: Ponty Y
DOI: 10.1038/s41598-017-06062-w
发表时间: 2017-07-18
期刊: Scientific reports
影响因子: 4.6
作者:
Cong Y;Kriegenburg F;de Haan CAM;Reggiori F
通讯作者: Reggiori F
DOI: 10.1186/s12929-018-0449-x
发表时间: 2018-05-24
影响因子: 11
作者:
Hsin WC;Chang CH;Chang CY;Peng WH;Chien CL;Chang MF;Chang SC
通讯作者: Chang SC
DOI: 10.1126/sciadv.aaz7095
发表时间: 2020-04-01
期刊: SCIENCE ADVANCES
影响因子: 13.6
作者:
Guseva, Serafima;Milles, Sigrid;Blackledge, Martin
通讯作者: Blackledge, Martin