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With the exception of the section covering the physical chemistry and kinetics of enzyme action, this is written by Carl Oppenheimer. The book is an excellent compilation and survey of much of the recent work on enzymes. An introductory chapter involving the historical phases of the subject, together with a rather unsuccessful attempt at a "natural system" of enzyme nomenclature and classification, is followed by a chapter on the descriptive chemistry of enzymes. The third division covers a general treatment of various chemical and physical factors affecting enzyme action. The next division, written primarily by Richard Kuhn, takes up the physiochemical point of view and tends to give the impression that thus far no definite and true specificity of enzyme action has been proved. This must be granted for some of the claimed specificities but certainly is not to be applied to all cases. Next the distribution, formation, secretion and
Lehrbuch der Enzyme: Chemie, physikalische Chemie und Biologie. JAMA. 1927;89(13):1085. doi:10.1001/jama.1927.02690130073049
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