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Developments and Applications of Coil-Library-Based Residue Specific Force Fields for Molecular Dynamics Simulations of Peptides and Proteins

机译:基于线圈文库的残留特定力场的分子动力学模拟肽和蛋白质的研制与应用

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摘要

Molecular dynamics (MD) simulation has become a powerful tool for studying the structures and functional mechanisms of biomolecules, and its reliability crucially depends on the accuracy of underlying force fields. This perspective describes our recent efforts to develop more accurate protein force fields by improving the description of intrinsic conformational preferences of amino acid residues using residue-specific dihedral-angle-related parameters. Both backbone and side-chain conformational distributions and their coupling were optimized to fit those from a protein coil library. The resulting force fields RSFF1 and RSFF2 have been found to be more accurate than popular protein force fields, in reproducing experimental structural data of various peptides and proteins. They have also been successfully used in studying folding mechanisms and refinement of structure models. Further methodology developments related to intrinsically disordered proteins (RSFF2+) and a more universal implementation (RSFF2C) based on CMAP potentials are also described.
机译:分子动力学(MD)模拟已成为研究生物分子结构和功能机制的强大工具,其可靠性至关重要取决于底层力场的准确性。这种观点介绍了我们最近的努力,通过改善使用残留物特异性二面角角度相关的参数来改善氨基酸残基的内在构象偏好的描述。优化骨干和侧链构象分布和它们的耦合以适应来自蛋白质线圈库的那些。已经发现所得到的力场RSFF1和RSFF2比流行的蛋白质力领域更准确,在再现各种肽和蛋白质的实验结构数据中。它们也已成功地用于研究结构模型的折叠机制和细化。还描述了基于CMAP电位的本质无序蛋白质(RSFF2 +)和更普遍实现(RSFF2C)相关的进一步方法。

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    Peking Univ Shenzhen Grad Sch State Key Lab Chem Oncogen Lab Computat Chem &

    Drug Design Shenzhen 518055 Peoples R China;

    Peking Univ Shenzhen Grad Sch State Key Lab Chem Oncogen Lab Computat Chem &

    Drug Design Shenzhen 518055 Peoples R China;

    Peking Univ Shenzhen Grad Sch State Key Lab Chem Oncogen Lab Computat Chem &

    Drug Design Shenzhen 518055 Peoples R China;

    Peking Univ Shenzhen Grad Sch State Key Lab Chem Oncogen Lab Computat Chem &

    Drug Design Shenzhen 518055 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学键的量子力学理论;化学;
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