Based on the international workshop on 'Small Molecule - Protein Interactions' held in Berlin, April 24-26, 2002, researchers from industry and academic laboratories describe novel and efficient ways selecting promising new drug targets and developing small molecule inhibitors against them. The structure of the book corresponds to the different aspects of the drug discovery process. All chapters are written by leading experts in the field, who present and discuss the most recent state-of-the-art tools and techniques for the development of novel drugs. The value of the book lies in surveying and summarizing the approaches taken by different companies and institutions giving the reader a balanced view on the use of the latest techniques on the one hand and experience-based assistance in selecting appropriate tools for their own work on the other hand.