The essence of combinatorial chemistry or techniques involving "molecular diversity" is to generate enormous populations of molecules and to exploit appropriate screening techniques to isolate active components contained in these libraries. This idea has been the focus of research both in academia and in the pharmaceutical or biotechnology industry. Its developments go hand in hand with an exploding number of potential drug targets emerging from genomics and proteomics research. When the editors of Current Topics in Microbiology and Immunology encouraged us to assemble the present volume on Combinatorial Chemistry in Biology, we immediately felt that this might prove quite beneficial for the audience of this series. The field of combinatorial chemistry extends over a broad range of disciplines, from synthetic organic chemistry to biochemistry, from material sciences to cell biology. Each of these fields may have its own view on this topic, something which is reflected in a growing number of monographs and "special editions" of jour nals devoted to this issue or aspects thereof. The title of the present volume of Springer-Verlag's series suggests that it also has its own special focus. And, generally speaking, this is not wrong: we would even claim the special focus of this volume is on the immunologically relevant aspects of combinatorial chemistry.

List of Contents

Peptide Libraries in Cellular Immune Recognition
Antigen Sequence- and Library-Based Mapping of Linear and Discontinuous Protein-Protein-Interaction Sites by Spot Synthesis
The Two Hybrid Toolbox
Evolutionary Approaches to Protein Engineering
Phage Display of Combinatorial Peptide and Protein Libraries and Their Applications in Biology and Chemistry
In Vitro Selection Methods for Screening of Peptide and Protein Libraries
Aptamers as Tools in Molecular Biology and Immunology
In Vitro Selection of Nucleic Acid Enzymes
Dynamic Combinatorial Chemistry: Evolutionary Formation and Screening of Molecular Libraries
Evolutionary Biotechnology - Reflections and Perspectives.