title: Flat-Bottom Strategy for Improved Accuracy in Protein Side-Chain Placements.
abstract: We present a new strategy for protein side-chain placement that uses flat-bottom potentials for rotamer scoring. The extent of the flat bottom depends on the coarseness of the rotamer library and is optimized for libraries ranging from diversities of 0.2 Å to 5.0 Å. The parameters reported here were optimized for forcefields using Lennard-Jones 12-6 van der Waals potential with DREIDING parameters but are expected to be similar for AMBER, CHARMM, and other forcefields. This Side-Chain Rotamer Excitation Analysis Method is implemented in the SCREAM software package. Similar scoring function strategies should be useful for ligand docking, virtual ligand screening, and protein folding applications.
authors.affiliation: Materials and Process Simulation Center (MC-139-74), California Institute of Technology, Pasadena, California 91125.
authors.forename: Victor Wai
authors.initials: VW
authors.lastname: Tak Kam
authors.affiliation: Materials and Process Simulation Center (MC-139-74), California Institute of Technology, Pasadena, California 91125.
authors.forename: William A
authors.initials: WA
authors.lastname: Goddard