Isozymes, I: Molecular Structure contains manuscripts presented at the Third International Conference on isozymes convened in April 1974 at Yale University. Separating 52 manuscripts into chapters, this book discusses the biology and biochemistry of isozymes. It also elucidates the multiple forms of mammalian DNA-dependent DNA polymerases, as well as RNA polymerases of maize, fungi, and Escherichia coli. Significant topics on some specific isozymes are given separately in other chapters.