The following chapters comprise invited contributions from eminent scientists who are internationally recognized authorities on the subject. The chapters have been written to provide the reader with adequate background, necessary experimental details, and discussion that is easy to comprehend. The book has been organized into four different sections. The introductory chapter is meant to briefly summarize the contributions of other authors and discuss phosphorylation of receptor systems not covered in the book in detail. The chapters in the second section, on protein kinases and phosphatases,...