Preface -- List of Contributors -- Engineering G Protein-Coupled Receptors for Drug Design -- Structural Insights into Activation and Allosteric Modulation of G Protein-Coupled Receptors -- Epigenetic Drug Discovery -- Crystallography and Biopharmaceuticals -- Structural Chemistry and Molecular Modeling in the Design of DPP4 Inhibitors -- Considerations for Structure-Based Drug Design Targeting HIV-1 Reverse Transcriptase.-Protein-Ligand Interactions as the Basis for Drug Action -- The Protein Data Bank: Overview and Tools for Drug Discovery -- Small Molecule Crystal Structures in Drug Discovery -- Protein Aggregation and its Prediction -- Importance of Protonation States for the Binding of Ligands to Pharmaceutical Targets -- Protein-Protein Interactions: Structures and Druggability -- Achieving High Quality Ligand Chemistry in Protein-Ligand Crystal Structures for Drug Design -- Molecular Obesity, Potency and Other Addictions in Drug Discovery -- Adventures in Small Molecule Fragment Screening by X-ray Crystallography for Drug Discovery -- Structure-Based Drug Design to Perturb Function of a tRNA-Modifying Enzyme by Active Site and Protein-Protein Interface Inhibition -- Molecular Interaction Analysis for Discovery of Drugs Targeting Enzymes and for Resolving Biological Function.