Wolfgang Pfeil

In 1998, we published the data compilation PROTEIN STABILITY AND FOLDING which covered the data from the early beginnings of thermodynamic studies of protein folding until 1996. Since then, the amount of available thermodynamic data has increased nearly twice. The data constitute very important additions to the information on the protein folding problem, the construction of mutant protein, and the practical application of proteins in various fields. The Supplement covers the period 1997-1999 and is designed to make the vast amount of present data accessible to multidisciplinary research where chemistry, physics, biology, and medicine are involved and also biotechnology, pharmaceutical and food research. At the same time the data could be helpful to identify problems unsolved so far, and to avoid unnecessary duplication of scientific work. The structure of the Supplement is the same as in the previous data compilation. However, some additional data characterizing protein-denaturant interaction and protein unfolding by trifluoroethanol have been added. In that context, some previous data have been reconsidered. The author wishes to thank everyone who provided data, ideas, or even unpublished results. Furthermore, support by the Deutsche Forschungsgemeinschaft (INK 16 BI-I) is gratefully acknowledged. Finally, I would like to thank the staff of Springer Verlag for their efforts and for excellent assistance during the production of the data collections.

In 1998, we published the data compilation PROTEIN STABILITY AND FOLDING which covered the data from the early beginnings of thermodynamic studies of protein folding until 1996. Since then, the amount of available thermodynamic data has increased nearly twice. The data constitute very important additions to the information on the protein folding problem, the construction of mutant protein, and the practical application of proteins in various fields. The Supplement covers the period 1997-1999 and is designed to make the vast amount of present data accessible to multidisciplinary research where chemistry, physics, biology, and medicine are involved and also biotechnology, pharmaceutical and food research. At the same time the data could be helpful to identify problems unsolved so far, and to avoid unnecessary duplication of scientific work. The structure of the Supplement is the same as in the previous data compilation. However, some additional data characterizing protein-denaturant interaction and protein unfolding by trifluoroethanol have been added. In that context, some previous data have been reconsidered. The author wishes to thank everyone who provided data, ideas, or even unpublished results. Furthermore, support by the Deutsche Forschungsgemeinschaft (INK 16 Bl-l) is gratefully acknowledged. Finally, I would like to thank the staff of Springer Verlag for their efforts and for excellent assistance during the production of the data collections.

Protein folding remains one of the most exclusive problems of modern biochemistry. Structure analysis has given access to the wealth of the molecular architecture of pro­ teins. As architecture needs static calculations, protein structure is always related to thermodynamic factors that govern folding and stability of a particular folded protein over the non-organized polypeptide chain. During the past decades a huge amount of thermodynamic data related to protein folding and stability has been accumulated. The data are certainly of importance in dechiffring the protein folding problem. At the same time, the data can guide the con­ struction of modified and newly synthesized proteins with properties optimized for particular application. The intention of this book is a generation of a data collection which makes the vast amount of present data accessible for multidisciplinary research where chemistry, phy­ sics, biology, and medicine are involved and also pharmaceutical and food research and technology. It took several years to compile all the data and the author wishes to thank everyone who provided data, ideas or even unpublished results. The author is, in particular, indebted to Prof. Wadso (Lund, Sweden) and IUPAC's Steering Committee on Bio­ physical Chemistry. Furthermore, support by the Deutsche Forschungsgemeinschafi (INK 16 AI-I) is acknowledged.

The modern biosciences make many new proteins available. Nevertheless the handling of these proteins is quite difficult due to problems with their stability. This collection gives - in the form of tables - protein stability data for various temperatures and solvents. These data are most useful for the development of protein folding and the improvement of biotechnological stability for applications of proteins. The first supplement contains material covering 1997-1999. Some previous data have also been included into the present work. Previous papers on denaturant-induced protein unfolding have been reconsidered to include additional parameters. Furthermore, data on TFE-induced unfolding have been arranged in a new Table. Finally, some data have been added which slipped through during the preparation of the data collection.

Modern biosciences make many new proteins available. Nevertheless, the handling of these proteins is quite difficult due to problems with their stability. This collection gives - in the form of tables - protein stability data for various temperatures and solvents. This data is mostly for the development of protein folding and the improvement of biotechnological stability for applications of proteins.