title: Atomic property fields: generalized 3D pharmacophoric potential for automated ligand superposition, pharmacophore elucidation and 3D QSAR.
abstract: The atomic property fields (APF) concept is introduced as a continuous, multi-component 3D potential that reflects preferences for various atomic properties at each point in space. Atomic property field-based approaches to several key problems in the field of ligand structure-based rational drug discovery and design are investigated. The superposition of ligands on one or multiple molecular templates is performed by Monte-Carlo minimization in the atomic property fields potentials combined with standard force-field energy. The approach is extended to multiple flexible ligand alignments using an iterative procedure, Self-Consistent atomic Property Fields by Optimization (SCAPFOld). The application of atomic property fields and SCAPFOld for virtual ligand screening and 3D Quantitive Structure-Activity Relationship (QSAR) is tested on published benchmarks. The new methods are shown to perform competitively in comparison to current state-of-the-art methods.
authors: Molsoft LLC, 3366 N Torrey Pines Ct., Ste. 300, La Jolla CA 92037, USA. max@molsoft.com
authors: Maxim
authors: M
authors: Totrov
mesh_terms: D006860:Hydrogen Bonding; D021621:Imaging, Three-Dimensional; D008024:Ligands; D008958:Models, Molecular; D015394:Molecular Structure; D004364:Pharmaceutical Preparations / Q000737:chemistry*; D021281:Quantitative Structure-Activity Relationship
chemical_list: D008024:Ligands; D004364:Pharmaceutical Preparations