This informative publication brings together knowledge of various aspects of cellular regulation. Current Topics in Cellular Regulation reviews the progress being made in those specialized areas of study that have undergone substantial development. It also publishes provocative new theories and concepts and serves as a forum for the discussion of general principles. Researchers in cellular regulation as well as biochemists, molecular and cell biologists, microbiologists, and biophysicists will find Current Topics in Cellular Regulation a useful source of up-to-date information. This volume covers topics including cellular thiols and redox regulated signal transduction; integration of antagonistic signals in the regulation of nitrogen assimilation in E. coli; regulation of nuclear import and export and of glutathione synthesis, superoxide dismutase, oxidative stress, and cell metabolism; and thiol-based antioxidants.