RT Journal Article SR Electronic T1 Distance geometry analysis of the benzodiazepine binding site. JF Molecular Pharmacology JO Mol Pharmacol FD American Society for Pharmacology and Experimental Therapeutics SP 11 OP 19 VO 22 IS 1 A1 G M Crippen YR 1982 UL http://molpharm.aspetjournals.org/content/22/1/11.abstract 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.