Transition States of Biochemical Processes

Transition States of Biochemical Processes
Author: R. Gandour
Publisher: Springer Science & Business Media
Total Pages: 625
Release: 2013-06-29
Genre: Science
ISBN: 1468499785

The transItIOn-state theory has been, from the point of its inception, the most influential principle in the development of our knowledge of reaction mechanisms in solution. It is natural that as the field of biochemical dynamics has achieved new levels of refinement its students have increasingly adopted the concepts and methods of transition-state theory. Indeed, every dynamical problem of biochemistry finds its most elegant and economical statement in the terms of this theory. Enzyme catalytic power, for example, derives from the interaction of enzyme and substrate structures in the transition state, so that an understanding of this power must grow from a knowledge of these structures and interactions. Similarly, transition-state interactions, and the way in which they change as protein structure is altered, constitute the pivotal feature upon which molecular evolution must turn. The complete, coupled dynamical system of the organism, incorporating the transport of matter and energy as well as local chemical processes, will eventually have to yield to a description of its component transition-state structures and their energetic response characteristics, even if the form of the description goes beyond present-day transition-state theory. Finally, the importance of biochemical effectors in medicine and agriculture carries the subject into the world of practical affairs, in the use of transition-state information for the construction of ultra potent biological agents.

Transition State

Transition State
Author: Takayuki Fueno
Publisher: CRC Press
Total Pages: 348
Release: 2019-08-16
Genre: Science
ISBN: 1000725294

The transition state is the critical configuration of a reaction system situated at the highest point of the most favorable reaction path on the potential-energy surface, its characteristics governing the dynamic behavior of reacting systems decisively. This text presents an accurate survey of current theoretical investigations of chemical reactions, with a focus on the nature of the transition state. Its scope ranges from general basic theories associated with the transition states, to their computer-assisted applications, through to a number of reactions in a state-of-the-art fashion. It covers various types of gas-phase elementary reactions, as well as some specific types of chemical processes taking place in the liquid phase. Also investigated is the recently developing transition state spectroscopy. This text will not only serve as a contemporary reference book on the concept of the transition state, but will also assist the readers in gaining valuable key principles regarding the essence of chemical kinetics and dynamics.

Solid States

Solid States
Author: Michael Bell
Publisher: Princeton Architectural Press
Total Pages: 288
Release: 2010-12
Genre: Architecture
ISBN: 9781568988955

DVD features highlights from the conference held at Columbia University.

Reaction Rate Theory and Rare Events

Reaction Rate Theory and Rare Events
Author: Baron Peters
Publisher: Elsevier
Total Pages: 636
Release: 2017-03-22
Genre: Technology & Engineering
ISBN: 0444594701

Reaction Rate Theory and Rare Events bridges the historical gap between these subjects because the increasingly multidisciplinary nature of scientific research often requires an understanding of both reaction rate theory and the theory of other rare events. The book discusses collision theory, transition state theory, RRKM theory, catalysis, diffusion limited kinetics, mean first passage times, Kramers theory, Grote-Hynes theory, transition path theory, non-adiabatic reactions, electron transfer, and topics from reaction network analysis. It is an essential reference for students, professors and scientists who use reaction rate theory or the theory of rare events. In addition, the book discusses transition state search algorithms, tunneling corrections, transmission coefficients, microkinetic models, kinetic Monte Carlo, transition path sampling, and importance sampling methods. The unified treatment in this book explains why chemical reactions and other rare events, while having many common theoretical foundations, often require very different computational modeling strategies. Offers an integrated approach to all simulation theories and reaction network analysis, a unique approach not found elsewhere Gives algorithms in pseudocode for using molecular simulation and computational chemistry methods in studies of rare events Uses graphics and explicit examples to explain concepts Includes problem sets developed and tested in a course range from pen-and-paper theoretical problems, to computational exercises

Framing the State in Times of Transition

Framing the State in Times of Transition
Author: Laurel E. Miller
Publisher: US Institute of Peace Press
Total Pages: 737
Release: 2010
Genre: History
ISBN: 1601270550

Analyzing nineteen cases, this title offers practical perspective on the implications of constitution-making procedure, and explores emerging international legal norms.

Kinetics and Mechanism

Kinetics and Mechanism
Author: John W. Moore
Publisher: John Wiley & Sons
Total Pages: 486
Release: 1981-09-30
Genre: Science
ISBN: 9780471035589

The third edition of a classic text originally by Frost and Pearson, that describes the fundamental principles and established practices that apply to the study and the rates and mechanisms of homogeneous chemical reactions in the gas phase and in solution. Incorporates new advances made during the past 20 years in the study of individual molecular collisions by molecular-beam, laser applications to experimental kinetics, theoretical treatments of reaction rates and our understanding of the principles that govern rates of reaction in solution. Presents numerous examples of the deduction of mechanism from experiment, including intimate details such as stereochemistry and the dependence of reaction pathway on the exact energy states of reacting particles.

Iminosugars

Iminosugars
Author: Philippe Compain
Publisher: John Wiley & Sons
Total Pages: 482
Release: 2007-10-22
Genre: Medical
ISBN: 9780470517444

Iminosugars form undoubtedly the most attractive of carbohydrate mimics reported so far. In these structures, the substitution of the endocyclic oxygen of sugars by a basic nitrogen atom leads to remarkable biological properties and raises many challenges in organic synthesis. Since the discovery of their biological activity as glycosidase inhibitors in the 1970’s, these polyvalent molecules have progressively made their way from the laboratory to the clinic. The impressive series of discoveries in the field over the past ten years indicates clearly that it is “a boom time” for iminosugar chemistry and biology. The scope of their profile as inhibitors has been extended to a number of enzymes such as phosphorylases, glycosyltransferases or metalloproteinases, and iminosugars now constitute lead compounds for the development of new therapeutic agents for a wide range of diseases including diabetes, viral infections, lysosomal storage disorders and tumor metastasis. Latest developments, from iminosugar synthesis to their use in clinical studies, are presented in this book, which contains contributions from over fifteen of the major chemists, biochemists and drug developers in this rapidly expanding field. An extensive table correlating the structures of more than 600 iminosugars of therapeutic interest with their biological activities is also included in the book and should prove particularly useful to aid with the design and the discovery of novel bioactive substances. Iminosugars: From Synthesis to Therapeutic Application provides a unique resource for academic and industrial researchers working in the field of iminosugars and glycomimetics of biological and/or therapeutic interest: organic chemists, medicinal chemists, carbohydrate chemists and medical scientists.

Molecular Modeling at the Atomic Scale

Molecular Modeling at the Atomic Scale
Author: Ruhong Zhou
Publisher: CRC Press
Total Pages: 392
Release: 2014-08-21
Genre: Science
ISBN: 1466562951

Although molecular modeling has been around for a while, the groundbreaking advancement of massively parallel supercomputers and novel algorithms for parallelization is shaping this field into an exciting new area. Developments in molecular modeling from experimental and computational techniques have enabled a wide range of biological applications. Responding to this renaissance, Molecular Modeling at the Atomic Scale: Methods and Applications in Quantitative Biology includes discussions of advanced techniques of molecular modeling and the latest research advancements in biomolecular applications from leading experts. The book begins with a brief introduction of major methods and applications, then covers the development of cutting-edge methods/algorithms, new polarizable force fields, and massively parallel computing techniques, followed by descriptions of how these novel techniques can be applied in various research areas in molecular biology. It also examines the self-assembly of biomacromolecules, including protein folding, RNA folding, amyloid peptide aggregation, and membrane lipid bilayer formation. Additional topics highlight biomolecular interactions, including protein interactions with DNA/RNA, membrane, ligands, and nanoparticles. Discussion of emerging topics in biomolecular modeling such as DNA sequencing with solid-state nanopores and biological water under nanoconfinement round out the coverage. This timely summary contains the perspectives of leading experts on this transformation in molecular biology and includes state-of-the-art examples of how molecular modeling approaches are being applied to critical questions in modern quantitative biology. It pulls together the latest research and applications of molecular modeling and real-world expertise that can boost your research and development of applications in this rapidly changing field.

Chemistry Under Extreme and Non-Classical Conditions

Chemistry Under Extreme and Non-Classical Conditions
Author: Rudi van Eldik
Publisher: John Wiley & Sons
Total Pages: 586
Release: 1996-12-06
Genre: Science
ISBN: 9780471165613

The very best and latest advances compiled in a single volume-an ideal resource for graduate students and researchers . . . Here is the perfect introduction to chemistry under extreme or non-classical conditions, including use of high temperature species, high pressure, supercritical media, sonochemistry, and microwave chemistry. Written by leading experts in their respective fields, this unique text applies a unified approach to each method, including background, instrumentation, examples, information on industrial applications (where relevant), and sources for further reading. Featured topics: * Chemical Synthesis Using High Temperature Species * Effect of Pressure on Inorganic Reactions * Effect of Pressure on Organic Reactions * Organic Synthesis at High Pressure * Inorganic and Related Chemical Reactions in Supercritical Fluids * Organic Chemistry in Supercritical Fluids * Industrial and Environmental Applications of Supercritical Fluids * Ultrasound as a New Tool for Synthetic Chemists * Applications of High Intensity Ultrasound in Polymer Chemistry * Chemistry Under Extreme Conditions in Water Induced Electrohydraulic Cavitation and Pulsed-Plasma Discharges * Microwave Dielectric Heating Effects in Chemical Synthesis * Biomolecules Under Extreme Conditions