The Evolution of Protein Structure and Function documents the proceedings of the symposium ""Evolution of Protein Structure and Function"" held at the Dickson Art Auditorium, University of California Los Angeles (UCLA), 28-29 June 1979. Its objective was to honor Professor Emil L. Smith on the occasion of his retirement as Professor and Chairman, Department of Biological Chemistry, School of Medicine, UCLA. The papers presented by Emil's colleagues, friends, and students from all phases of his long and varied scientific career provided a valuable review of enzymology, protein chemistry, and biochemical evolution. The volume contains 16 chapters is organized into three parts. Part I contains papers on enyzmology, including the role of the recA protein of Escherichia coli in general recombination; the evolution of enzyme families; and studies on metalloenzymes. Part II takes up protein structure and function. It includes papers on glycoprotein hormones, thymus hormones, chromosome biology and chemistry, and the evolution of histones. Part III examines the evolution of proteins, including the evolution of cythochrome c and evolution of phycobilisome of cyanobacteria and red algae.