In vitro functional analysis of gRNA sites regulating assembly of hepatitis B virus.
In vitro functional analysis of gRNA sites regulating assembly of hepatitis B virus.
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调节乙型肝炎病毒组装的gRNA位点的体外功能分析。
DOI:
10.1038/s42003-021-02897-2
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发表时间:
2021-12-16
影响因子:
5.9
通讯作者:
Stockley PG
中科院分区:
文献类型:
--
作者:
Patel N;Clark S;Weiß EU;Mata CP;Bohon J;Farquhar ER;Maskell DP;Ranson NA;Twarock R;Stockley PG
The roles of RNA sequence/structure motifs, Packaging Signals (PSs), for regulating assembly of an HBV genome transcript have been investigated in an efficient in vitro assay containing only core protein (Cp) and RNA. Variants of three conserved PSs, within the genome of a strain not used previously, preventing correct presentation of a Cp-recognition loop motif are differentially deleterious for assembly of nucleocapsid-like particles (NCPs). Cryo-electron microscopy reconstruction of the T = 4 NCPs formed with the wild-type gRNA transcript, reveal that the interior of the Cp shell is in contact with lower resolution density, potentially encompassing the arginine-rich protein domains and gRNA. Symmetry relaxation followed by asymmetric reconstruction reveal that such contacts are made at every symmetry axis. We infer from their regulation of assembly that some of these contacts would involve gRNA PSs, and confirmed this by X-ray RNA footprinting. Mutation of the ε stem-loop in the gRNA, where polymerase binds in vivo, produces a poor RNA assembly substrate with Cp alone, largely due to alterations in its conformation. The results show that RNA PSs regulate assembly of HBV genomic transcripts in vitro, and therefore may play similar roles in vivo, in concert with other molecular factors. Patel et al. investigate the role of RNA sequence/structure motif ‘Packaging Signals’ (PSs) in regulating the assembly of an HBV genome transcript using an in vitro assay containing only core protein (Cp) and RNA. They show that RNA PSs regulate assembly of HBV genomic transcripts in vitro, and therefore may play similar roles in vivo, in concert with other molecular factors.
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影响因子:
64.8
作者:
Bottcher, B;Wynne, SA;Crowther, RA
通讯作者:
Crowther, RA
影响因子:
5.6
作者:
Ford, Robert J.;Barker, Amy M.;Bakker, Saskia E.;Coutts, Robert H.;Ranson, Neil A.;Phillips, Simon E. V.;Pearson, Arwen R.;Stockley, Peter G.
通讯作者:
Stockley, Peter G.
DOI:
10.1107/s0907444904019158
发表时间:
2004-12-01
影响因子:
2.2
作者:
Emsley, P;Cowtan, K
通讯作者:
Cowtan, K
影响因子:
158.5
作者:
GREENBERG, HB;POLLARD, RB;MERIGAN, TC
通讯作者:
MERIGAN, TC
DOI:
10.1107/s0907444909052925
发表时间:
2010-02
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Adams PD;Afonine PV;Bunkóczi G;Chen VB;Davis IW;Echols N;Headd JJ;Hung LW;Kapral GJ;Grosse-Kunstleve RW;McCoy AJ;Moriarty NW;Oeffner R;Read RJ;Richardson DC;Richardson JS;Terwilliger TC;Zwart PH
通讯作者:
Zwart PH