and substrate oxidation, and the approaches and nature of cytochrome P450 inhibition. Two more chapters discuss the nature and roles of cytochrome P450 enzymes in microbes, plants and insects, and an eighth chapter is a survey of the potential utility of P450 enzymes in biotechnology. The first chapter of Volume 2 examines the roles of P450 enzymes in mammals, mainly humans. Four further chapters then deal with the genetic and hormonal regulation of P450 enzymes and their specific roles in the processing of sterols and lipids. Cytochrome P450: Structure, Mechanism, and Biochemistry is a key resource for scientists, professors, and students interested in fields as diverse as biochemistry, chemistry, biophysics, molecular biology, pharmacology and toxicology.