Protein engineering has had considerable impact on basic and applied research in biochemistry and molecular biology. It is already in use as a tool in molecular biology, but it is beginning to strongly influence the planning of experiments in biology everywhere, and, with even fur ther-reaching consequences, the appointment politics in research in stitutions and industries. Protein engineering, perhaps more than any other methods of protein analysis and peptide synthesis, has shown that proteins are organic molecules governed by the universal laws of chemistry and physics. How ever, as was...