PT - JOURNAL ARTICLE AU - G M Crippen TI - Distance geometry analysis of the benzodiazepine binding site. DP - 1982 Jul 01 TA - Molecular Pharmacology PG - 11--19 VI - 22 IP - 1 4099 - http://molpharm.aspetjournals.org/content/22/1/11.short 4100 - http://molpharm.aspetjournals.org/content/22/1/11.full SO - Mol Pharmacol1982 Jul 01; 22 AB - The in vitro binding constants to brain benzodiazepine receptor are known for a variety of benzodiazepines and also for four other different classes of strongly binding compounds. The binding data for a total of 29 drugs selected from these 5 classes was used to deduce a possible binding site model consisting of 15 site points and only 5 adjustable energy parameters. Even though some of the chemical structures differed radically, it was possible to fit the experimental data with a root mean square deviation of 1.1 kcal/mole. Apparently 5 non-hydrogen atoms in each ligand can occupy corresponding points in the site, and thus constitute a possible benzodiazepine pharmacophore.