Download or read book Use of Isotope Effects as a Probe of the Mechanism of Acyl Tansfer from Activated Esters written by Robert Alan Hess and published by . This book was released on 1996 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Use of Isotope Effects as a Probe of Enzyme Reaction Mechanisms written by Paul Martin Karl Weiss and published by . This book was released on 1987 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Enzyme Mechanism from Isotope Effects written by Paul F. Cook and published by CRC Press. This book was released on 1991-09-20 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt: Isotope effects have become one of the most powerful tools available to the enzymologist for probing enzymic mechanisms. Enzyme Mechanism from Isotope Effects presents the basic theory underlying isotope effects, including the latest findings on proton tunneling and coupled atomic notions. Specific theoretical applications are emphasized in regard to the types of information that can be obtained using isotope effects. The book also examines recent theoretical treatments of the product dependence of deuterium isotope effects, multiple isotope effects and isotope effects on intermediate partitioning. Other topics include a complete discussion of methods for measuring isotope effects, including a detailed description of the use of the isotope ratio mass spectrometer to obtain isotope effects, and a review of the literature regarding mechanistic information obtained from isotope effects for individual classes of enzyme-catalyzed reactions. Enzyme Mechanism from Isotope Effects is an excellent reference source for investigators using isotope effects in their research. The book is also valuable for reference libraries and instructors teaching courses in enzyme mechanism.

Download or read book Isotope Effects on Enzyme catalyzed Reactions written by William Wallace Cleland and published by . This book was released on 1977 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Use of Kinetic Isotope Effects in Studies of Hydrogen Transfers written by Daniel Harris Roston and published by . This book was released on 2013 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present dissertation seeks to deepen our understanding of hydrogen transfers and especially C-H bond activations in enzymes. Hydrogen transfers are ubiquitous in chemistry and biology and a thorough understanding of how they occur and what factors influence them will facilitate developments in biomimetic catalysis, rational drug design, and other fields. A particular difficulty with H-transfers is the importance of nuclear quantum effects to the reaction, particularly tunneling. The overall scope of the work here aims to examine how experimental kinetic isotope effects (KIEs) can be interpreted with a particular type of tunneling model, referred to as Marcus-like models, to yield a semi-quantitative picture of the physical mechanisms of H-transfers. Previous work had used this kind of model to qualitatively interpret experimental data using a combination of intuition and generalized theories. The work here examines these theories in quantitative detail, testing and calibrating our intuition in the context of several experimental systems. The first chapter of research (ch. II) focusses on the temperature dependence of primary KIEs and how these experiments can be quantitatively interpreted as a probe for certain kinds of enzyme or solvent dynamics. The subsequent chapters (ch. III-VI) focus on the use of secondary KIEs to determine the detailed structures of tunneling ready states (TRSs) and how the dynamics of H-tunneling affect those structures. These chapters focus primarily on the TRS of the enzyme alcohol dehydrogenase, but by examining an uncatalyzed analogue to that reaction (ch. VI), the work gains some insight about similarities and differences between catalyzed and uncatalyzed reactions. In summary, the work uncovers some principles of catalysis, not just the mechanism of a catalyzed reaction. The mechanism of C-H activation presented here provides an elegant solution to problems that have been vexing to accommodate within traditional models. This work constitutes some initial steps in making Marcus-like models quantitatively useful as a supplement or even replacement for traditional models of reactivity.

Download or read book Oxygen 18 Leaving Group Kinetic Isotope Effect and Transition State Structures for Non enzymatic and Enzymatic Acyl Transfer Reactions of Esters written by Charles Brush Sawyer and published by . This book was released on 1976 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dissertation Abstracts International written by and published by . This book was released on 2005 with total page 860 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book American Doctoral Dissertations written by and published by . This book was released on 1999 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Organic Reaction Mechanisms 1993 written by A. C. Knipe and published by John Wiley & Sons. This book was released on 2008-04-30 with total page 635 pages. Available in PDF, EPUB and Kindle. Book excerpt: The only book series to summarize the latest progress on organic reaction mechanisms, Organic Reaction Mechanisms, 1993 surveys the development in understanding of the main classes of organic reaction mechanisms reported in the primary scientific literature in 1993. The 29th annual volume in this highly successful series highlights mechanisms of stereo-specific reactions. Reviews are compiled by a team of experienced editors and authors, allowing advanced undergraduates, graduate students, postdocs, and chemists to rely on the volume's continuing quality of selection and presentation.

Download or read book Mechanisms of Protease Action written by Laszlo Polgar and published by CRC Press. This book was released on 1989-01-31 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: A uniform treatment of the four protease groups and a discussion of the differences and similarities in their action is presented in this important new publication. Serine, cysteine, aspartate, and zinc proteases are systematically discussed by nomenclature, evolution, specificity and their regulatory role. The chemistry of the peptide bond, including the catalysis of ester and peptide hydrolyses, is explained. For each protease group the emphasis is placed on the structure and function. Kinetics, enzyme modifications, isotope effects, subzero temperature investigations, nuclear magnetic resonance measurements, X-ray diffraction data, binding of transition-state analogs, zymogen activation, and site-specific mutagenesis are combined to rationalize the action of proteases. Both natural and synthetic inhibitors are considered because of their importance in mechanistic studies and drug design.

Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2626 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Applied Science Technology Index written by and published by . This book was released on 1984 with total page 2044 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Isotope Effects In Chemistry and Biology written by Amnon Kohen and published by CRC Press. This book was released on 2005-11-01 with total page 1092 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of isotope effects has expanded exponentially in the last decade, and researchers are finding isotopes increasingly useful in their studies. Bringing literature on the subject up to date, Isotope Effects in Chemistry and Biology covers current principles, methods, and a broad range of applications of isotope effects in the physical, biolo

Download or read book Reaction Rates of Isotopic Molecules written by Lars C. S. Melander and published by . This book was released on 1987 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mechanisms of Catalysis written by and published by Academic Press. This book was released on 1991-01-28 with total page 471 pages. Available in PDF, EPUB and Kindle. Book excerpt: The remarkable expansion of information leading to a deeper understanding of enzymes on the molecular level necessitated the development of this volume which not only introduces new topics to The Enzymes series but presents new information on some covered in Volume I and II of this edition.

Download or read book Understanding Organometallic Reaction Mechanisms and Catalysis written by Valentin P. Ananikov and published by John Wiley & Sons. This book was released on 2014-08-29 with total page 483 pages. Available in PDF, EPUB and Kindle. Book excerpt: Exploring and highlighting the new horizons in the studies of reaction mechanisms that open joint application of experimental studies and theoretical calculations is the goal of this book. The latest insights and developments in the mechanistic studies of organometallic reactions and catalytic processes are presented and reviewed. The book adopts a unique approach, exemplifying how to use experiments, spectroscopy measurements, and computational methods to reveal reaction pathways and molecular structures of catalysts, rather than concentrating solely on one discipline. The result is a deeper understanding of the underlying reaction mechanism and correlation between molecular structure and reactivity. The contributions represent a wealth of first-hand information from renowned experts working in these disciplines, covering such topics as activation of small molecules, C-C and C-Heteroatom bonds formation, cross-coupling reactions, carbon dioxide converison, homogeneous and heterogeneous transition metal catalysis and metal-graphene systems. With the knowledge gained, the reader will be able to improve existing reaction protocols and rationally design more efficient catalysts or selective reactions. An indispensable source of information for synthetic, analytical, and theoretical chemists in academia and industry.

Download or read book Activation of Unreactive Bonds and Organic Synthesis written by Shinji Murai and published by Springer. This book was released on 2003-07-01 with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last few years a large repetoire of methods for the activation of unreactive organic functionalities and for their use in organic synthesis has been developed. In this volume, areas ranging from the activation of C-H bonds to the chemical transformation of dinitrogen are authoritatively discussed by leading experts in the field. To activate means to be able to cleave otherwise inert chemical bonds. The cleavage and formation of chemical bonds is fundamental to organic synthesis; these new activation methodologies make hitherto infeasible reactions extremely easy and create new opportunities for innovative organic transformations, for both industry and academia. This is the first book that provides a thorough and timely coverage of both inorganic and organic synthetic aspects of bond activation, thus giving a broad overview of the field and allowing both inorganic and organic chemists ready access to the methodologies involved.