Environment-Specific Force Field for Intrinsically Disordered and Ordered Proteins

J Chem Inf Model. 2020 Apr 27;60(4):2257-2267. doi: 10.1021/acs.jcim.0c00059. Epub 2020 Apr 7.


The need for accurate and efficient force fields for modeling 3D structures of macrobiomolecules and in particular intrinsically disordered proteins (IDPs) has increased with recent findings to associate IDPs and human diseases. However, most conventional protein force fields and recent IDP-specific force fields are limited in reproducing accurate structural features of IDPs. Here, we present an environmental specific precise force field (ESFF1) based on CMAP corrections of 71 different sequence environments to improve the accuracy and efficiency of MD simulation for both IDPs and folded proteins. MD simulations of 84 different short peptides, IDPs, and structured proteins show that ESFF1 can accurately reproduce spectroscopic properties for different peptides and proteins whether they are disordered or ordered. The successful ab initio folding of five fast-folding proteins further supports the reliability of ESFF1. The extensive analysis documented here shows that ESFF1 is able to achieve a reasonable balance between ordered and disordered states in protein simulations.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Humans
  • Intrinsically Disordered Proteins*
  • Molecular Dynamics Simulation*
  • Peptides
  • Protein Conformation
  • Protein Folding*
  • Reproducibility of Results


  • Intrinsically Disordered Proteins
  • Peptides