Enhancing water sampling of buried binding sites using nonequilibrium candidate Monte Carlo.
Enhancing water sampling of buried binding sites using nonequilibrium candidate Monte Carlo.
复制标题
用非平衡候选蒙特卡罗增强埋藏结合部位的水样。
DOI:
10.1007/s10822-020-00344-8
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发表时间:
2021-03
影响因子:
3.5
通讯作者:
Mobley DL
中科院分区:
文献类型:
--
作者:
Bergazin TD;Ben-Shalom IY;Lim NM;Gill SC;Gilson MK;Mobley DL
Water molecules can be found interacting with the surface and within cavities in proteins. However, water exchange between bulk and buried hydration sites can be slow compared to simulation timescales, thus leading to the inefficient sampling of the locations of water. This can pose problems for free energy calculations for computer-aided drug design. Here, we apply a hybrid method that combines nonequilibrium candidate Monte Carlo (NCMC) simulations and molecular dynamics (MD) to enhance sampling of water in specific areas of a system, such as the binding site of a protein. Our approach uses NCMC to gradually remove interactions between a selected water molecule and its environment, then translates the water to a new region, before turning the interactions back on. This approach of gradual removal of interactions, followed by a move and then reintroduction of interactions, allows the environment to relax in response to the proposed water translation, improving acceptance of moves and thereby accelerating water exchange and sampling. We validate this approach on several test systems including the ligand-bound MUP-1 and HSP90 proteins with buried crystallographic waters removed. We show that our BLUES (NCMC/MD) method enhances water sampling relative to normal MD when applied to these systems. Thus, this approach provides a strategy to improve water sampling in molecular simulations which may be useful in practical applications in drug discovery and biomolecular design.
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影响因子:
15
作者:
Abel, Robert;Young, Tom;Friesner, Richard A.
通讯作者:
Friesner, Richard A.
DOI:
10.1007/978-1-61779-465-0_24
发表时间:
2012-01-01
期刊:
COMPUTATIONAL DRUG DISCOVERY AND DESIGN
影响因子:
--
作者:
Li, Zheng;Lazaridis, Themis
通讯作者:
Lazaridis, Themis
影响因子:
62.1
作者:
Bellissent-Funel MC;Hassanali A;Havenith M;Henchman R;Pohl P;Sterpone F;van der Spoel D;Xu Y;Garcia AE
通讯作者:
Garcia AE
影响因子:
4.4
作者:
JORGENSEN, WL;CHANDRASEKHAR, J;KLEIN, ML
通讯作者:
KLEIN, ML
影响因子:
4.3
作者:
Eastman P;Swails J;Chodera JD;McGibbon RT;Zhao Y;Beauchamp KA;Wang LP;Simmonett AC;Harrigan MP;Stern CD;Wiewiora RP;Brooks BR;Pande VS
通讯作者:
Pande VS