Download or read book Dynamics in Enzyme Catalysis written by Judith Klinman and published by Springer. This book was released on 2013-09-14 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: Christopher M. Cheatum and Amnon Kohen, Relationship of Femtosecond–Picosecond Dynamics to Enzyme-Catalyzed H-Transfer. Cindy Schulenburg and Donald Hilvert, Protein Conformational Disorder and Enzyme Catalysis. A. Joshua Wand, Veronica R. Moorman and Kyle W. Harpole, A Surprising Role for Conformational Entropy in Protein Function. Travis P. Schrank, James O. Wrabl and Vincent J. Hilser, Conformational Heterogeneity Within the LID Domain Mediates Substrate Binding to Escherichia coli Adenylate Kinase: Function Follows Fluctuations. Buyong Ma and Ruth Nussinov, Structured Crowding and Its Effects on Enzyme Catalysis. Michael D. Daily, Haibo Yu, George N. Phillips Jr and Qiang Cui, Allosteric Activation Transitions in Enzymes and Biomolecular Motors: Insights from Atomistic and Coarse-Grained Simulations. Karunesh Arora and Charles L. Brooks III, Multiple Intermediates, Diverse Conformations, and Cooperative Conformational Changes Underlie the Catalytic Hydride Transfer Reaction of Dihydrofolate Reductase. Steven D. Schwartz, Protein Dynamics and the Enzymatic Reaction Coordinate.
Download or read book The Dynamics of Enzymatic Reactions written by Lishan Yao and published by . This book was released on 2006 with total page 610 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book New Trends in Enzyme Catalysis and Biomimetic Chemical Reactions written by Gertz I. Likhtenshtein and published by Springer Science & Business Media. This book was released on 2007-05-08 with total page 239 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This book is a view of enzyme catalysis by a physico-chemist with long-term experience in the investigation of structure and action mechanism of biological catalysts. This book is not intended to provide an exhaustive survey of each topic but rather a discussion of their theoretical and experimental background, and recent developments. The literature of enzyme catalysis is so vast and many scientists have made important contribution in the area, that it is impossible in the space allowed for this book to give a representative set of references. The author has tried to use reviews, and general principles of articles. He apologizes to those he has not been able to include. . ... The monograph is intended for scientists working on enzyme catalysis and adjacent areas such as chemical modeling of biological processes, homogeneous catalysis, biomedical research and biotechnology. The book can be use as a subsidiary manual for instructors, graduate and undergraduate students of university biochemistry and chemistry departments."--Pages ix-x.
Download or read book The Enzyme Catalysis Process written by A. Cooper and published by Springer Science & Business Media. This book was released on 2013-12-11 with total page 479 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume represents the proceedings of a NATO Advanced Studies Instituteheld near Barga (Italy), July 11-23, 1988, involving over 90 participants from more than twelve countries of Europe, North America and elsewhere. It was not our intention at this meeting to present a complete up-to-the-minute review of current research in enzyme catalysis but t·ather, in accord wi th the intended spiri t of NATO ASis, to gi ve an opportunity for advanced students and researchers in a wide variety of disciplines to meet tagether and study the problern from different points of view. Hence the lectures cover topics rauging from the purely theoretical aspects of chemical reaction kinetics in condensed matter through practical experimental approaches to enzyme structure, dynamics and mechanism, including the new experimental opportunities arising from genetic engineering techniques. Our approachwas unashamedly physical, both because the more biochemical aspects of enzymology are amply covered elsewhere and because progress in our understanding and application of the molecular basis of enzymic processes must ultimately come from advances in physical knowledge. We tried to cover as wide a spectrum as possible, and succeeded in gathering an expert and enthusiastic team of speakers, but there . are some inevitable omissions. In particular, and with hindsight, our discussions might have been enriched by more detailed coverage of general aspects of chemical catalysis - but readers requiring this background should find adequate references herein.
Download or read book Enzymatic Reaction Mechanisms written by Perry A. Frey and published by Oxford University Press. This book was released on 2007-01-27 with total page 852 pages. Available in PDF, EPUB and Kindle. Book excerpt: Books dealing with the mechanisms of enzymatic reactions were written a generation ago. They included volumes entitled Bioorganic Mechanisms, I and II by T.C. Bruice and S.J. Benkovic, published in 1965, the volume entitled Catalysis in Chemistry and Enzymology by W.P. Jencks in 1969, and the volume entitled Enzymatic Reaction Mechanisms by C.T. Walsh in 1979. The Walsh book was based on the course taught by W.P. Jencks and R.H. Abeles at Brandeis University in the 1960's and 1970's. By the late 1970's, much more could be included about the structures of enzymes and the kinetics and mechanisms of enzymatic reactions themselves, and less emphasis was placed on chemical models. Walshs book was widely used in courses on enzymatic mechanisms for many years. Much has happened in the field of mechanistic enzymology in the past 15 to 20 years. Walshs book is both out-of-date and out-of-focus in todays world of enzymatic mechanisms. There is no longer a single volume or a small collection of volumes to which students can be directed to obtain a clear understanding of the state of knowledge regarding the chemicals mechanisms by which enzymes catalyze biological reactions. There is no single volume to which medicinal chemists and biotechnologists can refer on the subject of enzymatic mechanisms. Practitioners in the field have recognized a need for a new book on enzymatic mechanisms for more than ten years, and several, including Walsh, have considered undertaking to modernize Walshs book. However, these good intentions have been abandoned for one reason or another. The great size of the knowledge base in mechanistic enzymology has been a deterrent. It seems too large a subject for a single author, and it is difficult for several authors to coordinate their work to mutual satisfaction. This text by Perry A. Frey and Adrian D. Hegeman accomplishes this feat, producing the long-awaited replacement for Walshs classic text.
Download or read book Computer Modeling of Chemical Reactions in Enzymes and Solutions written by Arieh Warshel and published by Wiley-Interscience. This book was released on 1997-03-28 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This practical reference explores computer modeling of enzyme reations--techniques that help chemists, biochemists and pharmaceutical researchers understand drug and enzyme action.
Download or read book Cell Biology by the Numbers written by Ron Milo and published by Garland Science. This book was released on 2015-12-07 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Top 25 CHOICE 2016 Title, and recipient of the CHOICE Outstanding Academic Title (OAT) Award. How much energy is released in ATP hydrolysis? How many mRNAs are in a cell? How genetically similar are two random people? What is faster, transcription or translation?Cell Biology by the Numbers explores these questions and dozens of others provid
Download or read book Enzyme Dynamics written by Zhao, Xi and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Enzymes are ubiquitous molecules in living systems. Apart from their primary function as catalysts, enzymes are also assumed to promote motion of other biomolecules, similar to motor proteins. Recent work shows that free swimming enzymes produce mechanical force to increase their own diffusion when they catalyze reactions. Moreover, when exposed to a gradient of reactant, enzymes move up the gradient just like cellular chemotaxis. Force generation by active enzymes has potential applications ranging from nanomachinery, nanoscale assembly, cargo transport, drug delivery, micro/nanofluidics, and chemical/biochemical sensing. By fully understanding why enzymes display enhanced diffusion and by what mechanism they assemble and move directionally, we can better monitor and manipulate the motion of enzyme powered artificial swimmers. One of the current proposed hypotheses used to explain enzyme enhanced diffusion proposes that heat released during enzyme catalyzed reactions causes the increase in diffusion. To further investigate the mechanisms driving this phenomenon, aldolase, an endothermic enzyme, was studied initially. By applying Fluorescence Correlation Spectroscopy (FCS), the results demonstrate that aldolase shows enhanced diffusion in the presence of substrate even in a heat absorbing environment. To further explore the mechanism, aldolases substrate was substituted for a competitive inhibitor that periodically binds and unbinds to the active site of aldolase without promoting a catalytic reaction. Even in this case, the diffusion of aldolase increases and therefore, we propose that enzyme periodical conformational changes lead to enzyme force generation. To confirm our hypothesis, hexokinase was also studied. Hexokinase is unique because it only binds and unbinds to its substrate, D-glucose without its cofactors (adenosine triphosphate and magnesium chloride). Fluorescence correlation spectroscopy (FCS) was done to show that the diffusion of hexokinase increases in the presence of only D-glucose, further proving our hypothesis that conformational changes lead to the enhanced diffusion of enzymes. Another goal of this work was to understand the chemotaxis of enzymes and their potential impact on cellular activities. Enzymes that are part of a reaction cascade have been shown to assemble through sequential chemotaxis; each enzyme follows its own specific substrate gradient, which in turn is produced by the preceding enzymatic reaction. Thus, the sequential chemotaxis in catalyst cascades allows for the time-dependent, self-assembly of specific catalyst particles participating in the cascade. This is an example of how information can arise from chemical gradients and it is tempting to suggest that a similar mechanism underlies the organization of living systems.The impulsive force generated by enzyme catalysis can also be transmitted to the surrounding fluid and inert particles, resulting in fluid pumping and enhanced particle diffusion. When attached to bigger particles, enzymes act as engines, imparting motility to the particles and moving them directionally in a substrate gradient. Based on what we observed with the physical activity of free enzymes, we hypothesize that, in vivo, enzymes may be responsible for the stochastic motion of the cytoplasm, the organization of metabolons and signaling complexes, and the convective transport of fluid in cells.
Download or read book Dynamic Analysis of Enzyme Systems written by Katsuya Hayashi and published by Springer. This book was released on 1986-02 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is concerned with a quantitative analysis of dynamic behavior of various enzymatic reaction systems by computer simulation. The authors and coworkers have been engaged in cooperative research since 1975, seeking to clarify the catalytic and regulatory characteristics of enzymatic reactions in vivo and control mechanisms suitable for enzyme technology. Rather than "enzyme kinetics" generally known in enzymol· ogy, this research has employed an approach called "enzyme dynamics" which concentrates on the exact schematic representation of an actual reac tion mechanism, derivation of rate equation on the basis of the scheme, and computer simulation of its dynamic behavior (numerical solution of the rate equation and explanation of kinetic and regulatory properties of the enzymatic reaction). A rate equation representing the behavior of enzymatic reactions is gen erally expressed by a set of nonlinear differential equations. The analytic solution of rate equations is therefore impossible in general, making it necessary to introduce some approximations in order to analyze the exper· imental data in enzyme kinetics. For example, under an assumption of excess substrate against enzyme in a closed system, we commonly use the linear approximation for the early period of reaction, the quasi-steady state approximation based on putative maintenance of steady state in en zyme species, and the rapid-equilibrium approximation assuming instantane ous equilibration in complex formation and between complexes. The kinetic characteristics obtained by these approximations do not always reflect the dynamic behavior of actual enzymatic reactions.
Download or read book Enzyme Dynamics and Regulation written by P. Boon Chock and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 441 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent developments in concepts and techniques have brought enzyme research to a changing yet exciting stage. Enzymes have served as indispensable tools in the phenomenal rise of molecular biology, and the resultant biotechnology thrusts enzymes to new heights and territories. This volume, the proceedings of a recent symposium on the Dynamics of Soluble and Immobilized Enzyme Systems, provides a current overview of the field to help scientists utilize long-established and newly acquired information.
Download or read book Enzyme Kinetics and Mechanism written by Paul F. Cook and published by Garland Science. This book was released on 2007-03-06 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: Enzyme Kinetics and Mechanism is a comprehensive textbook on steady-state enzyme kinetics. Organized according to the experimental process, the text covers kinetic mechanism, relative rates of steps along the reaction pathway, and chemical mechanism—including acid-base chemistry and transition state structure. Practical examples taken from the literature demonstrate theory throughout. The book also features numerous general experimental protocols and how-to explanations for interpreting kinetic data. Written in clear, accessible language, the book will enable graduate students well-versed in biochemistry to understand and describe data at the fundamental level. Enzymologists and molecular biologists will find the text a useful reference.
Download or read book Biomass Biofuels Biochemicals written by Sudhir P. Singh and published by Elsevier. This book was released on 2020-04-03 with total page 481 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Enzyme Catalysis and Technologies intends to provide the basic structural and functional descriptions, and classification of enzymes. The scientific information related to the recombinant enzyme modifications, discovery of novel enzymes and development of synthetic enzymes are also presented. The translational aspects of enzyme catalysis and bioprocess technologies are illustrated, by emphasizing the current requirements and future perspectives of industrial biotechnology. Several case studies are included on enzymes for biofuels application, micro algal biorefineries, high-value bioactive molecules production and enzymes for environmental processes, such as enzymatic bioprocessing for functional food development, biocatalytic technologies for the production of functional sweetener, etc. Provides a conceptual understanding of enzyme catalysis, enzyme engineering, discovery of novel enzymes, and technology perspectives Includes comprehensive information about the inventions and advancement in enzyme system development for biomass processing and functional food developmental aspects Gives an updated reference for education and understanding of enzyme technology
Download or read book Simulating Enzyme Reactivity written by Inaki Tunon and published by Royal Society of Chemistry. This book was released on 2016-11-16 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt: The simulation of enzymatic processes is a well-established field within computational chemistry, as demonstrated by the 2013 Nobel Prize in Chemistry. It has been attracting increasing attention in recent years due to the potential applications in the development of new drugs or new environmental-friendly catalysts. Featuring contributions from renowned authors, including Nobel Laureate Arieh Warshel, this book explores the theories, methodologies and applications in simulations of enzyme reactions. It is the first book offering a comprehensive perspective of the field by examining several different methodological approaches and discussing their applicability and limitations. The book provides the basic knowledge for postgraduate students and researchers in chemistry, biochemistry and biophysics, who want a deeper understanding of complex biological process at the molecular level.
Download or read book Computational Approaches to Biochemical Reactivity written by Gábor Náray-Szabó and published by Springer Science & Business Media. This book was released on 2006-04-11 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: A quantitative description of the action of enzymes and other biological systems is both a challenge and a fundamental requirement for further progress in our und- standing of biochemical processes. This can help in practical design of new drugs and in the development of artificial enzymes as well as in fundamental understanding of the factors that control the activity of biological systems. Structural and biochemical st- ies have yielded major insights about the action of biological molecules and the mechanism of enzymatic reactions. However it is not entirely clear how to use this - portant information in a consistent and quantitative analysis of the factors that are - sponsible for rate acceleration in enzyme active sites. The problem is associated with the fact that reaction rates are determined by energetics (i. e. activation energies) and the available experimental methods by themselves cannot provide a correlation - tween structure and energy. Even mutations of specific active site residues, which are extremely useful, cannot tell us about the totality of the interaction between the active site and the substrate. In fact, short of inventing experiments that allow one to measure the forces in enzyme active sites it is hard to see how can one use a direct experimental approach to unambiguously correlate the structure and function of enzymes. In fact, in view of the complexity of biological systems it seems that only computers can handle the task of providing a quantitative structure-function correlation.
Download or read book Reactive Molecular Dynamics from Small Molecules in Gas Phase to Enzymatic Reactions written by Sebastian Brickel and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Comprehensive Enzyme Kinetics written by Vladimir Leskovac and published by Springer Science & Business Media. This book was released on 2007-05-08 with total page 439 pages. Available in PDF, EPUB and Kindle. Book excerpt: Welcome to your study of enzyme kinetics, the subject that underlies all enzymology, which in turn underlies all aspects of biochemistry. This text will give you an introduction to a wide range of topics that constitute the modern enzyme kinetics. This textbook is directed at graduate students in biochemistry, chemistry, and life sciences, for advanced courses in enzyme kinetics, enzymology, and enzyme chemistry. For this reason, the whole book is organized in a systematic and scholarly fashion. It is unlikely that the student will be expected to cover everything in the text, but in a later career she or he may find it an invaluable reference for topics that are needed in practice. The concepts, definitions and detailed algebra of enzyme kinetics are laid out in accurate detail. For that reason, this textbook can also serve as a handbook for enzyme kinetics for research workers in the field. The research worker will find it a useful source, which can be used for solving the daily experimental problems in the laboratory. The preparation of the manuscript for this book was under the constant surveillance of W. Wallace Cleland, Professor of Chemical Science at the University of Wisconsin in Madison, and one of the founders of modern enzyme kinetics. Without his help and advice, this bookwould not be possible. Several versions of the manuscript were constantly corrected and improved by Svetlana Professor of Biochemistry at the University of Novi Sad.
Download or read book Mechanistic Principles of Enzyme Activity written by Joel F. Liebman and published by Wiley-VCH. This book was released on 1988 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt:
