de Azevedo, Walter Filgueira Determining the structural basis for specificity of ligands using crystallographic screening. [electronic resource] - Cell biochemistry and biophysics 2006 - 405-11 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 1085-9195 Standard No.: 10.1385/CBB:44:3:405 doi Subjects--Topical Terms: Binding Sites--drug effectsComputer SimulationCrystallization--methodsCrystallography, X-Ray--methodsEnzyme Inhibitors--chemistryLigandsModels, MolecularPhosphates--chemistryProtein Binding--drug effectsProtein FoldingPurine NucleosidesPurine-Nucleoside Phosphorylase--antagonists & inhibitorsStructure-Activity RelationshipSubstrate Specificity