Two time scales for self and collective diffusion near the critical point in a simple patchy model for proteins with floating bonds.
Two time scales for self and collective diffusion near the critical point in a simple patchy model for proteins with floating bonds.
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具有浮动键的蛋白质的简单斑块模型中接近临界点的自我扩散和集体扩散的两个时间尺度
DOI:
10.1039/c8sm00599k
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发表时间:
2018
期刊:
影响因子:
3.4
通讯作者:
M. Oettel
中科院分区:
文献类型:
--
作者:
J. Bleibel;M. Habiger;M. Lütje;F. Hirschmann;F. Roosen-Runge;T. Seydel;F. Zhang;F. Schreiber;M. Oettel
Using dynamic Monte Carlo and Brownian dynamics, we investigate a floating bond model in which particles can bind through mobile bonds. The maximum number of bonds (here fixed to 4) can be tuned by appropriately choosing the repulsive, nonadditive interactions among bonds and particles. We compute the static and dynamic structure factor (intermediate scattering function) in the vicinity of the gas–liquid critical point. The static structure exhibits a weak tetrahedral network character. The intermediate scattering function shows a temporal decay deviating from a single exponential, which can be described by a double exponential decay where the two time scales differ approximately by one order of magnitude. This time scale separation is robust over a range of wave numbers. The analysis of clusters in real space indicates the formation of noncompact clusters and shows a considerable stretch in the instantaneous size distribution when approaching the critical point. The average time evolution of the largest subcluster of given initial clusters with 10 or more particles also shows a double exponential decay. The observation of two time scales in the intermediate scattering function at low packing fractions is consistent with similar findings in globular protein solutions with trivalent metal ions that act as bonds between proteins.
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影响因子:
1.6
作者:
Li, Ye;Lubchenko, Vassiliy;Vekilov, Peter G.
通讯作者:
Vekilov, Peter G.
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
Fajun Zhang;G. Zocher;A. Sauter;T. Stehle;F. Schreiber
通讯作者:
F. Schreiber
DOI:
10.1063/1.2799522
发表时间:
2007
期刊:
The Journal of chemical physics
影响因子:
--
作者:
E. Zaccarelli;F. Sciortino;P. Tartaglia
通讯作者:
P. Tartaglia
影响因子:
1.7
作者:
Rovigatti, Lorenzo;Sciortino, Francesco
通讯作者:
Sciortino, Francesco
影响因子:
3.4
作者:
Sándalo Roldán;L. Rovigatti;F. Sciortino
通讯作者:
F. Sciortino