Enzymatic Analysis: A Practical Guide is a multipurpose manual of laboratory methods. It offers a systematic scheme for the analysis of biological materials from the level of the whole organ down to the single cell and beyond. It is intended as a guide to the development of new methods, to the refinement of old ones, and to the adaptation in general of methods to almost any scale of sensitivity. As some may realize, the book is a sequel to A Flexible System of Enzymatic Analysis, originally published in 1972. The major changes, other than an appropriate interchange of authors, consist of a wholly new chapter of methods and protocols for measuring enzymes, the addition of 13 new entries in the metabolite chapter, and a much superior chapter on enzymatic cycling. With considerable nostalgia, we have switched from DPN and TPN to NAD and NADP nomenclature, which no doubt will make Otto Warburg turn over in his grave. The incentives for the methodology in this book came from the rigorous demands of quantitative histochemistry and cytochemistry. These demands are specificity, simplicity, flexibility, and, of course, sensitivity—all likewise desirable attributes of methods for other purposes. The specificity is provided by the use of enzyme methods. Simplicity is achieved by leading all reactions to a final pyridine nucleotide step.

A Flexible System of Enzymatic Analysis is a multipurpose manual of laboratory methods that offers a systematic scheme for the analysis of biological materials from the level of the wholeorgan down to the single cell and beyond. It intends to guide the development of methods, the refinement of old ones, and the adaptation in general of methods to almost any scale of sensitivity. This manual is organized into three parts: a general section, one on quantitative histochemistry, and an appendix containing information that may be useful to have at the bench. The general section is comprised of nine chapters that focus on properties of the pyridine nucleotides, kinetics, and glassware, as well as on improvement, modification, adaptation, trouble shooting, and development of methods. This part also describes the preparation of tissues for analysis, the enzymatic cycling methods, and a compendium of 36 metabolite assays. The quantitative histochemistry section is comprised of four chapters that include information on the preparation of frozen-dried material and dissection of samples for analysis; the fishpole balance for weighing samples; and the generalities of analysis with emphasis on the ""oil well technique."" This book will be useful to novices as well as experts who are familiar with other analytical styles.

Enzymatic Methods of Analysis attempts to cover all the aspects of modern enzymatic analysis. Enzymes possess a great potential usefulness in analytical chemistry. The specificity of enzymes can solve the primary problem of most analytical chemists—the analysis of one substance in the presence of many similar compounds that interfere in the analysis. The book begins with two introductory chapters devoted to general considerations of enzymes as reagents and methods of analysis of enzymatic reactions. The next four chapters deal with methods for the assay of specific enzymes, and substrate, activator, and inhibitor analysis using enzymes. In the last two chapters the immobilization of enzymes and the automation of enzymatic reactions are discussed. In addition, a listing of all commercially available enzymes is given in an appendix. It is hoped that the information presented will prove interesting and stimulating to all individuals engaged in research and development.

Methods of Enzymatic Analysis, Volume 4 reviews developments in the use of enzymes as tools in analytical biochemistry, including advances in assay techniques. It discusses the principles and methods for the elucidation of structures of enzymes, such as peptides, proteins, amino acids, fatty acid metabolites, lipids, steroids, nucleic acids, purines, pyrimidines, nucleosides, and coenzymes. It also considers the isolation and characterization of active centers in enzymes. This volume is divided into four parts, each discussing a group of enzymes and their determination. Part I focuses on proteins, peptides, and amino acids including amines and amides. Part II is concerned with fatty acid metabolites, lipids, and steroids ranging from polyunsaturated fatty acids and lecithin to choline, acetylcholine, triglycerides, glycerol, acetoacetate, triacetate, fumarylacetoacetate, 20-ketosteroids, prostaglandins, bile acids, and cholesterol. Part III discusses nucleic acids, purines, pyrimidines, nucleosides, coenzymes, and related compounds, whereas Part IV looks at other substrates and effectors such as inorganic phosphate. The book concludes with a chapter on metabolites and their concentrations in animal tissues. Biochemists as well as students and researchers working in the field of analytical biochemistry will find this book highly informative.

Methods of Enzymatic Analysis, Volume 2 reviews developments in the determination of enzyme activity, including advances in assay techniques. It discusses the principles on which measurements of enzymes are based, with each chapter including equations and each method consisting of the pipetting protocol. This volume is divided into four parts, each discussing a group of enzymes and their determination. Part I focuses on oxidoreductases, such as sorbitol dehydrogenase, lactate dehydrogenase, malate dehydrogenase, isocitrate dehydrogenase, 6-phosphogluconate dehydrogenase, xanthine oxidase, and glutamate dehydrogenase. Part II is concerned with transferases ranging from ornithine carbamoyltransferase and transamidinase to transketolase, transaldolase, UDP-glucuronyltransferase, glutamate-pyruvate transaminase, and phosphotransferases. Part III discusses hydrolases including esterases, glycoside hydrolases, peptidases, and proteinases, whereas Part IV looks at lyases, isomerases, and ligases, such as fructose-1, 6-diphosphate aldolase, 1-phosphofructoaldolase, glucosephosphate isomerase, and tetrahydrofolate formylase. This book is a valuable resource for biochemists as well as students and researchers working in the field of analytical biochemistry.

Methods of Enzymatic Analysis focuses on the general progress in enzymology and in the special field of enzymatic analysis. This book explores the commercial production of biochemical reagents for analysis and explains the transition from the possible use of enzymatic analysis to its various applications in pure and applied biochemistry. Organized into four sections, this book starts with an overview of the basis of enzymatic analysis and provides general experimental guidelines for the techniques of measurement and for the disintegration of cells and tissues. This text then provides detailed instructions for the determination of substrates and assay of enzyme activities. Other chapters explore the practical aspects and information necessary for the application of reagents to enzymatic analysis, including sources, stability, and purity required. The final section describes the commercially available enzymes, coenzymes, substrates, and several less common reagents. Biochemists, biophysicists, researchers, and graduate students will find this book extremely useful.

The ability to quantify the sensory stimuli and resulting behavioral responses has enabled researchers over the past thirty years to gain an in-depth understanding of the physiological processes and neural pathways involved in the control of eye and head movements and posture. However, the molecular mechanisms and neurochemical processes that underlie neurotransmission of the vestibular and oculomotor pathways have begun to be defined only during the past decade. The first book available on this topic, Neurochemistry of the Vestibular System covers the proliferation of new information stemming from the technical advances in the areas of molecular biology and neurochemistry. It analyzes the recent developments in areas that relate to the neurochemical organization of the hair cells in the inner ear, the vestibular nerve, the vestibular nuclear complex, and central afferent and efferent vestibular projections. The book also identifies future directions for research in the areas of neurotransmitters, second messengers, transcription factors, and molecular mechanisms involved with both normal vestibular function and compensation. Features

The idea for the p~esent book arose from a 3-day seminar which I organized in March 1984 for young research workers in plant physiology. Participants came from several universities of the French-speaking part of Switzerland and speakers from Basel, Mtinchen, Nottingham, Perpignan, Regensburg, Sheffield, Toulouse, Yale, ZUrich ... and Lausannne. The theme of the seminar was chosen from the range of research fields of our Institute. Meanwhile, feeling it was important to bear in mind that some of our hearers were not specialists in the chosen topic, I wished to pro vide a subject that would be of scientific, methodological and epistemologi cal interest. The critical analysis of the structural and functional characteristics of plant protoplasts exactly met these criteria. There exists ample material for discussion of the techniques of protoplast preparation, methods used in morphological, biological and biochemical studies, and for the comparison of protoplasts with the cells from which they are obtained.