Title
Screened charge electrostatic model in protein-protein docking simulations.
Abstract
A new method for considering solvation when calculating electrostatics for protein docking is proposed. The solvent-exposed charges are attenuated by induced solvent polarization charges. Modified charges are pre-calculated and the correction doesn't affect the speed of the actual simulation. The new Screened Charge Electrostatic Model (SChEM) results in an improved discrimination of near-native solutions from false positives in docking simulations as compared to conventional 'non-solvated' charge assignment. A series of protein-protein complexes were analyzed by running automated rigid-body Monte-Carlo docking simulations using the 3-D coordinates of the unbound components. In all but one case, the use of solvation screened charges for electrostatic calculations helped to improve the rank of the near-native solution after rigid-body simulations. The SChEM also drastically improved the results of the subsequent refinement of the interface side-chains. In all cases the final lowest energy solution was found within 3.0 A r.m.s.d. of the crystal structure.
Year
Venue
Keywords
2002
Pacific Symposium on Biocomputing
complex network,protein protein interaction,rigid body,protein complex,mathematical model
Field
DocType
ISSN
Electrostatics,Chemical physics,Biology,Docking (dog),Protein protein,Crystal structure,Solvation,Genetics
Conference
2335-6936
Citations 
PageRank 
References 
0
0.34
1
Authors
3
Name
Order
Citations
PageRank
Juan Fernandez-Recio111.04
Maxim Totrov226931.59
Ruben Abagyan343055.44