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A cofactor is a component part of many enzymes and functions by uniting with another molecule in order to become active. The use of cofactors to supplement the native amino acids of a protein is essential to maintain the chemical capabilities necessary for organisms to survive. This volume focuses on the significant advances of the past decade in identifying and describing new cofactors--either small molecules or those derived posttranslationally.
The occurrence of a wide variety of metal-carbon bonds in living organisms, ranging from bacteria to humans, is only recently recognized. Of course, the historical examples are the B12 coenzymes containing cobalt-carbon bonds, but now such bonds are also known for nickel, iron, copper, and other transition metal ions. There is no other comparable book; MILS-6, written by 17 experts, summarizes the most recent insights into this fascinating topic.
This volume is a summary of the proceedings of the 8th International Symposium on Vitamin B6 and Carbonyl Catalysis, held in Osaka, Japan, 15-19 October 1990. The development of molecular biology and x-ray crystallography techniques have contributed greatly to the knowledge and understanding of PLP-dependent enzymes. The structural, mechanistic and functional aspects of the PLP-dependent enzymes have been studied for over 40 years by many active researchers. Recent evidence indicates that the coenzyme is substituted by the pyruvoyl group which is a reactive carbonyl in some amino acid decarboxylases, and the presence of pyrroloquinoline quinone (PQQ), another carbonyl coenzyme, in other enzymes. The contents of this volume attest to the exciting progress in elucidating structure, mechanism of action, and the function of enzymes dependent on coenzymes containing the carbonyl group.
Proceedings of the 22nd Annual Symposium of the SSIEM, Newcastle Upon Tyne, September 1984
In this brief, the authors explore and review the current knowledge regarding the role of molybdenum in the evolution of biological systems and their interaction with biogeochemical cycles. Special emphasis is placed on biological nitrogen fixation and the nitrogen element cycle. The origin and evolution of molybdenum cofactor biosynthetic pathways as well as the evolutionary significance of molybdenum containing enzymes appearance is analyzed. Original data regarding nitrogen fixation pathways and related enzymes molecular evolution processes is presented. The trace element molybdenum is essential for nearly all organisms and forms the catalytic center of a large variety of enzymes such as nitrogenase, nitrate reductases, sulphite oxidase and xanthine oxidoreductases.
The longest running serial published by Academic Press continues its well-respected run with Volume 61, a special volume in which a guest editor has come on board and has assembled some well-known contributors who are international authorities in the field. Together they tackle some of the latest topics in the field such as riboflavin and folate biosynthesis, biotin and lipoic acid biosynthesis, nicotinamide adenine dinucleotide biosynthesis, biosynthesis of vitamin B6 and structurally related derivatives, pantothenic acid and coenzyme A biosynthesis, mechanistic biosynthesis of protein-derived redox cofactors, ascorbic acid biosynthesis, biosynthesis of menaquinone and ubiquinone - Vitamin B12 biosynthesis, biosynthesis of the methanogenic cofactors, and thiamin biosynthesis.
It is a pleasure to have the privilege of writing the foreword for a book edited by Dr. Francis F. Foldes. Dr. Foldes has collected in one convenient place a discussion and description of enzyme systems of use to the anesthesiologist and to those other individuals, such as undergraduate and graduate students in related basic sciences, who will profit by and can make use of this body of information. The practicing anesthesiologist and those who work in related fields have become increasingly aware of the need to understand enzyme activities which influence the uptake, distribution, and excretion of those substances that are used in the anesthetic management of surgical patients. A variety of such is obvious when one considers that such diverse substances as activities and muscle re analgesic drugs, tranquilizers, hypnotics, anesthetic agents, laxants are strongly affected by these systems and have an influence over the basic understanding of how these drugs operate and act in the body, as well as providing a safety measure so necessary to the proper conduct of clinical anesthesia. The editor and his colleagues have rendered us a great service in collecting information that deals with the basic activity of enzymes including their structure, their kinetics, and to the degree that knowledge permits, mechanism of actions.
Comprehensive Natural Products III, Third Edition, Seven Volume Set updates and complements the previous two editions, including recent advances in cofactor chemistry, structural diversity of natural products and secondary metabolites, enzymes and enzyme mechanisms and new bioinformatics tools. Natural products research is a dynamic discipline at the intersection of chemistry and biology concerned with isolation, identification, structure elucidation, and chemical characteristics of naturally occurring compounds such as pheromones, carbohydrates, nucleic acids and enzymes. This book reviews the accumulated efforts of chemical and biological research to understand living organisms and their distinctive effects on health and medicine and to stimulate new ideas among the established natural products community. Provides readers with an in-depth review of current natural products research and a critical insight into the future direction of the field Bridges the gap in knowledge by covering developments in the field since the second edition published in 2010 Split into 7 sections on key topics to allow students, researchers and professionals to find relevant information quickly and easily Ensures that the knowledge within is easily understood by and applicable to a large audience
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This book provides a comprehensive introduction to all aspects of enzyme engineering, from fundamental principles through to the state-of-the-art in research and industrial applications. It begins with a brief history, describing the milestones of advancement in enzyme science and technology, before going on to cover the fundamentals of enzyme chemistry, the biosynthesis of enzymes and their production. Enzyme stability and the reaction kinetics during enzymatic reactions are presented to show how enzymes function during catalysis and the factors that affect their activity. Methods to improve enzyme performance are also presented, such as cofactor regeneration and enzyme immobilization. The book emphasizes and elaborates on the performance and characteristics of enzymes at the molecular level. Finally, the book presents recent advances in enzyme engineering and some key industrial application of enzymes addressing the present needs of society. This book presents essential information not only for undergraduate and graduate students, but also for researchers in academia and industry, providing a valuable reference for the development of commercial applications of enzyme technology.