Calculating binding free energies of host-guest systems using the AMOEBA polarizable force field.
Calculating binding free energies of host-guest systems using the AMOEBA polarizable force field.
复制标题
DOI:
10.1039/c6cp02509a
复制
发表时间:
2016-11-09
期刊:
影响因子:
--
通讯作者:
Ren P
中科院分区:
文献类型:
--
作者:
Bell DR;Qi R;Jing Z;Xiang JY;Mejias C;Schnieders MJ;Ponder JW;Ren P
Molecular recognition is of paramount interest in many applications. Here we investigate a series of host-guest systems previously used in the SAMPL4 blind challenge by using molecular simualtions and the AMOEBA polarizable force field. The free energy results computed by Bennett’s acceptance ratio (BAR) method using the AMOEBA polarizable force field ranked favorably among the entries submitted to the SAMPL4 host-guest competition [Muddana et al., J. Comput.-Aided Mol. Des., 2014, 28, 305-317.]. In this work we conduct an in-depth analysis of the AMOEBA force-field host-guest binding thermodynamics by using both BAR and the orthogonal space random walk (OSRW) methods. The binding entropy-enthalpy contributions are analyzed for each host-guest system. For systems of inordinate binding entropy-enthalpy values, we further examine the hydrogen bonding patterns and configurational entropy contribution. The binding mechanism of this series of host-guest systems varies from ligand to ligand, driven by enthalpy and/or entropy changes. Convergence of BAR and OSRW binding free energy methods are discussed. Ultimately, this work illustrates the value of molecular modelling and advanced force fields for the exploration and interpretation of binding thermodynamics. TOC Description: Cucurbit[7]uril host-guest binding free energies are investigated using the AMOEBA polarizable force field.
登录
查看更多内容
影响因子:
3.5
作者:
Lawrenz, Morgan;Wereszczynski, Jeff;Ortiz-Sanchez, Juan Manuel;Nichols, Sara E.;McCammon, J. Andrew
通讯作者:
McCammon, J. Andrew
影响因子:
4.1
作者:
BENNETT, CH
通讯作者:
BENNETT, CH
影响因子:
5.5
作者:
Baron, Riccardo;Huenenberger, Philippe H.;McCammon, J. Andrew
通讯作者:
McCammon, J. Andrew
DOI:
10.1088/0953-8984/21/33/333102
发表时间:
2009-08-19
期刊:
Journal of physics. Condensed matter : an Institute of Physics journal
影响因子:
--
作者:
Cieplak P;Dupradeau FY;Duan Y;Wang J
通讯作者:
Wang J
影响因子:
15
作者:
Hamelberg, D;McCammon, JA
通讯作者:
McCammon, JA