Genomic RNA Elements Drive Phase Separation of the SARS-CoV-2 Nucleocapsid.
Genomic RNA Elements Drive Phase Separation of the SARS-CoV-2 Nucleocapsid.
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DOI:
10.1016/j.molcel.2020.11.041
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发表时间:
2020-12-17
期刊:
影响因子:
16
通讯作者:
Gladfelter AS
中科院分区:
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
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.
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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:
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影响因子:
13.6
作者:
Guseva, Serafima;Milles, Sigrid;Blackledge, Martin
通讯作者:
Blackledge, Martin