title: Development of KiBank, a database supporting structure-based drug design.
abstract: KiBank is a database of inhibition constant (Ki) values with 3D structures of target proteins and chemicals. Ki values were accumulated from peer-reviewed literature searched via PubMed. The 3D structure files of target proteins were originally from Protein Data Bank (PDB), while the 2D structure files of the chemicals were collected together with the Ki values and then converted into 3D ones. In KiBank, the chemical and protein 3D structures with hydrogen atoms were optimized by energy minimization and stored in MDL MOL and PDB format, respectively. KiBank is designed to support structure-based drug design. It provides structure files of proteins and chemicals ready for use in virtual screening through automated docking methods, while the Ki values can be applied for tests of docking/scoring combinations, program parameter settings, and calibration of empirical scoring functions. Additionally, the chemical structures and corresponding Ki values in KiBank are useful for lead optimization based on quantitative structure-activity relationship (QSAR) techniques. KiBank is updated on a daily basis and is freely available at . As of August 2004, KiBank contains 8000 Ki values, over 6000 chemicals and 166 proteins covering the subtypes of receptors and enzymes.
authors.affiliation: Collaborative Research Center of Frontier Simulation Software for Industrial Science, Institute of Industrial Science, University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan. cho@fsis.iis.u-tokyo.ac.jp
authors.forename: Junwei
authors.initials: J
authors.lastname: Zhang
authors.forename: Masahiro
authors.initials: M
authors.lastname: Aizawa
authors.forename: Shinji
authors.initials: S
authors.lastname: Amari
authors.forename: Yoshio
authors.initials: Y
authors.lastname: Iwasawa
authors.forename: Tatsuya
authors.initials: T
authors.lastname: Nakano
authors.forename: Kotoko
authors.initials: K
authors.lastname: Nakata
mesh_terms: D001665:Binding Sites; D017076:Computer-Aided Design; D030562:Databases, Protein; D015195:Drug Design; D004791:Enzyme Inhibitors / Q000737:chemistry / Q000494:pharmacology; D007255:Information Services; D020407:Internet; D011485:Protein Binding; D039781:PubMed; D021281:Quantitative Structure-Activity Relationship
chemical_list: D004791:Enzyme Inhibitors