Nonequilibrium self-assembly dynamics of icosahedral viral capsids packaging genome or polyelectrolyte.
Nonequilibrium self-assembly dynamics of icosahedral viral capsids packaging genome or polyelectrolyte.
复制标题
DOI:
10.1038/s41467-018-05426-8
复制
发表时间:
2018-08-06
影响因子:
16.6
通讯作者:
Tresset G
中科院分区:
文献类型:
--
作者:
Chevreuil M;Law-Hine D;Chen J;Bressanelli S;Combet S;Constantin D;Degrouard J;Möller J;Zeghal M;Tresset G
The survival of viruses partly relies on their ability to self-assemble inside host cells. Although coarse-grained simulations have identified different pathways leading to assembled virions from their components, experimental evidence is severely lacking. Here, we use time-resolved small-angle X-ray scattering to uncover the nonequilibrium self-assembly dynamics of icosahedral viral capsids packaging their full RNA genome. We reveal the formation of amorphous complexes via an en masse pathway and their relaxation into virions via a synchronous pathway. The binding energy of capsid subunits on the genome is moderate (~7kBT0, with kB the Boltzmann constant and T0 = 298 K, the room temperature), while the energy barrier separating the complexes and the virions is high (~ 20kBT0). A synthetic polyelectrolyte can lower this barrier so that filled capsids are formed in conditions where virions cannot build up. We propose a representation of the dynamics on a free energy landscape. The mechanism by which virus capsules assemble around RNA to package their genetic material is not clear. Here, the authors observed the assembly of the cowpea chlorotic mottle virus capsid around viral RNA or poly(styrene sulfonic acid) using time-resolved small-angle X-ray scattering measurements.
登录
查看更多内容
影响因子:
15
作者:
Kwak, Minseok;Minten, Inge J.;Herrmann, Andreas
通讯作者:
Herrmann, Andreas
影响因子:
10.8
作者:
Huang, Xinlei;Bronstein, Lyudmila M.;Dragnea, Bogdan
通讯作者:
Dragnea, Bogdan
DOI:
10.1021/jp802498z
发表时间:
2008-10-02
期刊:
The journal of physical chemistry. A
影响因子:
--
作者:
Chen C;Kao CC;Dragnea B
通讯作者:
Dragnea B
影响因子:
10.8
作者:
Goicochea, Nancy L.;De, Mrinmoy;Dragnea, Bogdan
通讯作者:
Dragnea, Bogdan
影响因子:
2
作者:
Elrad OM;Hagan MF
通讯作者:
Hagan MF