The objective of the Enzyme Handbook is to provide in concise form data on enzymes sufficiently well characterized. The data sheets are arranged in their EC number sequence, volumes 15 to 17 contain Additional Enzymes and updated data sheets to be inserted in previous volumes by their EC-number. For each enzyme, systematic and common names are given, information on reaction type, substrate and product spectrum, inhibitors, cofactors, kinetic data, pH and temperature range, origin, purification, molecular data and storage conditions are listed. A reference list completes the data sheets. This collection is an indispensable source of information for researchers applying enzymes in analysis, synthe