Download or read book Large Scale Quantum Mechanical Enzymology written by Greg Lever and published by Springer. This book was released on 2015-06-06 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work establishes linear-scaling density-functional theory (DFT) as a powerful tool for understanding enzyme catalysis, one that can complement quantum mechanics/molecular mechanics (QM/MM) and molecular dynamics simulations. The thesis reviews benchmark studies demonstrating techniques capable of simulating entire enzymes at the ab initio quantum-mechanical level of accuracy. DFT has transformed the physical sciences by allowing researchers to perform parameter-free quantum-mechanical calculations to predict a broad range of physical and chemical properties of materials. In principle, similar methods could be applied to biological problems. However, even the simplest biological systems contain many thousands of atoms and are characterized by extremely complex configuration spaces associated with a vast number of degrees of freedom. The development of linear-scaling density-functional codes makes biological molecules accessible to quantum-mechanical calculation, but has yet to resolve the complexity of the phase space. Furthermore, these calculations on systems containing up to 2,000 atoms can capture contributions to the energy that are not accounted for in QM/MM methods (for which the Nobel prize in Chemistry was awarded in 2013) and the results presented here reveal profound shortcomings in said methods.

Download or read book Large Scale Simulation and Analysis to Understand Enzymatic Chemical Mechanisms written by Ishan Satish Patel and published by . This book was released on 2015 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: The full stack approach, from Biochemical Network Simulation to Quantum Mechanics, is developed and utilized to understand in this thesis to understand enzymatic mechanism. The story falls into two segments that highlight two different aspects of enzymatic mechanisms. The first is the determination of the kinetic complexity of one full enzymatic turnover can affect the system in ways that cannot be predicted by simplistic simulations, as evidenced by differential hydrolysis rates of VX and Paraoxon in the enzyme PTE. Over 4M CPU hours of thermodynamic integration simulations were performed to obtain free energy profiles, as a function of up to 6 dimensions, along a reaction path determined through a combination of knowledge from physical organic chemistry, local energetic optimizations, and experimental information. The activation barriers were converted to reaction rates and simulated with mass action kinetics. The results show the slow-down in one turnover for the enzyme is not exactly the one with the "highest barrier" but is instead the result of non-preferential product-facing equilibrium. We also show that active site poisoning by VX opens up new pathways that are an overall detriment to the enzyme. The second is the uncovering of the drivers of enzymatic reactivity for a purely electronic Claisen rearrangement of Chorismate in CM, CM mutants, 1 F7 antibody, Solvent, and Vacuum. Utilizing Transition Path Sampling (TPS), we performed large scale simulations totaling over I OM CPU hours and 1000 TB of storage space to arrive at an understanding of the causation behind differential reactivity from a quantum mechanical orbital point of view. Our results suggest differential catalytic capacity is driven by, and correlates with, greater capacity to generate the forming bond, and for faster enzymes, greater capacity to disrupt the breaking bond. Further orbital level decompositions were performed that demonstrated disruption of the breaking bond allows greater catalytic gains because orbital symmetry prevents strong intermolecular electronic delocalization of the breaking bond electrons. Our evidence suggests a combination of catalyzing the departure from the reactant basin and the transport through the transition region are both reasons why the WT CM is an extremely capable catalyst.

Download or read book Green Chemistry and Computational Chemistry written by Liliana L. Mammino and published by Elsevier. This book was released on 2021-11-17 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt: Green chemistry already draws on many techniques and approaches developed by theoretical chemists, whilst simultaneously revealing a whole range of interesting new challenges for theoretical chemists to explore. Highlighting how work at the intersection of these fields has already produced beneficial results, Green Chemistry and Computational Chemistry: Shared Lessons in Sustainability is a practical, informative guide to combining green and theoretical chemistry principles and approaches in the development of more sustainable practices.Beginning with an introduction to both theoretical chemistry and green chemistry, the book goes on to explore current approaches being taken by theoretical chemists to address green and sustainable chemistry issues, before moving on to highlight ways in which green chemists are employing the knowledge and techniques of theoretical chemistry to help in developing greener processes. The future possibilities for theoretical chemistry in addressing sustainability issues are discussed, before a selection of case studies provides good insight into how these interactions and approaches have been successfully used in practice. Highlights the benefits of green and theoretical chemistry groups working together to tackle sustainability issues across both academia and industry Supports readers in easily selecting the most appropriate path through the book for their own needs Presents a range of examples examining the practical implications and outcomes of interdisciplinary approaches

Download or read book Challenges in Computational Enzymology written by Vicent Moliner and published by Frontiers Media SA. This book was released on 2019-12-31 with total page 173 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Enzymology and Molecular Biology of Carbonyl Metabolism 10 written by H. Weiner and published by Gulf Professional Publishing. This book was released on 2001-05-14 with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt: The largest collection of articles on the three major gene families, this work ranges from enzymology to molecular biology to physiological implications. The three gene families are related in that the enzymes catalyse the NAD(P) dependent oxidation or reduction of carbonyl containing substrates. The substrates are important in diverse areas such as alcoholism, diabetes and cancer related problems as well as simple detoxification. The scope of the chapters, contributed by leading international scientists, is wide and covers gene regulation to enzyme mechanisms and protein structure. This is the only publication dealing in such depth with just three gene families. An important reference for researchers in toxicology and molecular biology.

Download or read book Computational Approaches for Studying Enzyme Mechanism Part A written by and published by Academic Press. This book was released on 2016-08-04 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computational Approaches for Studying Enzyme Mechanism Part A, is the first of two volumes in the Methods in Enzymology series, focusses on computational approaches for studying enzyme mechanism. The serial achieves the critically acclaimed gold standard of laboratory practices and remains one of the most highly respected publications in the molecular biosciences. Each volume is eagerly awaited, frequently consulted, and praised by researchers and reviewers alike. Now with over 550 volumes, the series remains a prominent and essential publication for researchers in all fields of life sciences and biotechnology, including biochemistry, chemical biology, microbiology, synthetic biology, cancer research, and genetics to name a few. Focuses on computational approaches for studying enzyme mechanism Continues the legacy of this premier serial with quality chapters authored by leaders in the field Covers research methods in intermediate filament associated proteins, and contains sections on such topics as lamin-associated proteins, intermediate filament-associated proteins and plakin, and other cytoskeletal cross-linkers

Download or read book Structural and Mechanistic Enzymology written by and published by Academic Press. This book was released on 2012-10-22 with total page 473 pages. Available in PDF, EPUB and Kindle. Book excerpt: Both strategies for investigation (computational and experimental) in structural and mechanistic Enzymology have developed to some extent independently. However, over the last few years a trend has emerged for strengthening their integration. This combination not only brings together computations and experiments focused on the same enzymatic problems, but also provides complementary insights into the investigated properties and has a powerful synergy effect. This thematic volume of Advances in Protein Chemistry and Structural Biology focuses on the recent success in structural and mechanistic enzymology and has its main emphasis on explaining the enzyme phenomena by using both the experimental and computational approaches. The selected contributions demonstrate how the application of a variety of experimental techniques and modeling methods helps further the understanding of enzyme dynamics, mechanism, inhibition, and drug design. Focuses on the recent success in structural and mechanistic enzymology Has its main emphasis on explaining the enzyme phenomena by using both the experimental and computational approaches Demonstrates how the application of a variety of experimental techniques and modeling methods helps further the understanding of enzyme dynamics, mechanism, inhibition, and drug design

Download or read book Multi scale Quantum Models for Biocatalysis written by Darrin M. York and published by Springer Science & Business Media. This book was released on 2009-05-30 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: “Multi-scale Quantum Models for Biocatalysis” explores various molecular modelling techniques and their applications in providing an understanding of the detailed mechanisms at play during biocatalysis in enzyme and ribozyme systems. These areas are reviewed by an international team of experts in theoretical, computational chemistry, and biophysics. This book presents detailed reviews concerning the development of various techniques, including ab initio molecular dynamics, density functional theory, combined QM/MM methods, solvation models, force field methods, and free-energy estimation techniques, as well as successful applications of multi-scale methods in the biocatalysis systems including several protein enzymes and ribozymes. This book is an excellent source of information for research professionals involved in computational chemistry and physics, material science, nanotechnology, rational drug design and molecular biology and for students exposed to these research areas.

Download or read book Enzyme Functionality written by Allan Svendsen and published by CRC Press. This book was released on 2003-10-28 with total page 706 pages. Available in PDF, EPUB and Kindle. Book excerpt: Enzyme Functionality serves as a conduit for trailblazing research in enzyme engineering-relating current understanding of sequence families, the new notion of enzyme structure classes, and modern methods in protein engineering, design, and directed evolution to accelerate the development of novel enzyme functionalities. This reference gathers the

Download or read book Computational Approaches to Study the Impact of Mutations on Disease and Drug Resistance written by Nir Ben-Tal and published by Frontiers Media SA. This book was released on 2022-01-27 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Thermodynamics of Biochemical Reactions written by Robert A. Alberty and published by John Wiley & Sons. This book was released on 2005-01-28 with total page 409 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ein Lehr- und Handbuch der Thermodynamik biochemischer Reaktionen mit modernen Beispielen und umfangreichen Hinweisen auf die Originalliteratur. - Schwerpunkt liegt auf Stoffwechsel und enzymkatalysierten Reaktionen - Grundlagen der Thermodynamik (z. B. chemisches Gleichgewicht) werden anschaulich abgehandelt - zu den speziellen Themen gehören Reaktionen in Matrices, Komplexbildungsgleichgewichte und Ligandenbindung, Phasengleichgewichte, Redoxreaktionen, Kalorimetrie

Download or read book Applications of Density Functional Theory to Biological and Bioinorganic Chemistry written by Mihai V. Putz and published by Springer. This book was released on 2013-02-01 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt: The series Structure and Bonding publishes critical reviews on topics of research concerned with chemical structure and bonding. The scope of the series spans the entire Periodic Table and addresses structure and bonding issues associated with all of the elements. It also focuses attention on new and developing areas of modern structural and theoretical chemistry such as nanostructures, molecular electronics, designed molecular solids, surfaces, metal clusters and supramolecular structures. Physical and spectroscopic techniques used to determine, examine and model structures fall within the purview of Structure and Bonding to the extent that the focus is on the scientific results obtained and not on specialist information concerning the techniques themselves. Issues associated with the development of bonding models and generalizations that illuminate the reactivity pathways and rates of chemical processes are also relevant. The individual volumes in the series are thematic. The goal of each volume is to give the reader, whether at a university or in industry, a comprehensive overview of an area where new insights are emerging that are of interest to a larger scientific audience. Thus each review within the volume critically surveys one aspect of that topic and places it within the context of the volume as a whole. The most significant developments of the last 5 to 10 years should be presented using selected examples to illustrate the principles discussed. A description of the physical basis of the experimental techniques that have been used to provide the primary data may also be appropriate, if it has not been covered in detail elsewhere. The coverage need not be exhaustive in data, but should rather be conceptual, concentrating on the new principles being developed that will allow the reader, who is not a specialist in the area covered, to understand the data presented. Discussion of possible future research directions in the area is welcomed. Review articles for the individual volumes are invited by the volume editors. Readership: research scientists at universities or in industry, graduate students Special offer For all customers who have a standing order to the print version of Structure and Bonding, we offer free access to the electronic volumes of the Series published in the current year via SpringerLink.

Download or read book Quantum Biochemistry written by Chérif F. Matta and published by John Wiley & Sons. This book was released on 2010-01-14 with total page 978 pages. Available in PDF, EPUB and Kindle. Book excerpt: Divided into five major parts, the two volumes of this ready reference cover the tailoring of theoretical methods for biochemical computations, as well as the many kinds of biomolecules, reaction and transition state elucidation, conformational flexibility determination, and drug design. Throughout, the chapters gradually build up from introductory level to comprehensive reviews of the latest research, and include all important compound classes, such as DNA, RNA, enzymes, vitamins, and heterocyclic compounds. The result is in-depth and vital knowledge for both readers already working in the field as well as those entering it. Includes contributions by Prof. Ada Yonath (Nobel Prize in Chemistry 2009) and Prof. Jerome Karle (Nobel Prize in Chemistry 1985).

Download or read book Computational Methods for Macromolecules Challenges and Applications written by Tamar Schlick and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: This special volume collects invited articles by participants of the Third International Workshop on Methods for Macromolecular Modeling, Courant Institute of Mathematical Sciences, Oct. 12-14, 2000. Leading developers of methods for biomolecular simulations review advances in Monte Carlo and molecular dynamics methods, free energy computational methods, fast electrostatics (particle-mesh Ewald and fast multipole methods), mathematics, and molecular neurobiology, nucleic acid simulations, enzyme reactions, and other essential applications in biomolecular simulations. A Perspectives article by the editors assesses the directions and impact of macromolecular modeling research, including genomics and proteomics. These reviews and original papers by applied mathematicians, theoretical chemists, biomedical researchers, and physicists are of interest to interdisciplinary research students, developers and users of biomolecular methods in academia and industry.

Download or read book Bioinorganic Chemistry written by Rosette M. Roat-Malone and published by John Wiley & Sons. This book was released on 2007-10-05 with total page 541 pages. Available in PDF, EPUB and Kindle. Book excerpt: An updated, practical guide to bioinorganic chemistry Bioinorganic Chemistry: A Short Course, Second Edition provides the fundamentals of inorganic chemistry and biochemistry relevant to understanding bioinorganic topics. Rather than striving to provide a broad overview of the whole, rapidly expanding field, this resource provides essential background material, followed by detailed information on selected topics. The goal is to give readers the background, tools, and skills to research and study bioinorganic topics of special interest to them. This extensively updated premier reference and text: Presents review chapters on the essentials of inorganic chemistry and biochemistry Includes up-to-date information on instrumental and analytical techniques and computer-aided modeling and visualization programs Familiarizes readers with the primary literature sources and online resources Includes detailed coverage of Group 1 and 2 metal ions, concentrating on biological molecules that feature sodium, potassium, magnesium, and calcium ions Describes proteins and enzymes with iron-containing porphyrin ligand systems-myoglobin, hemoglobin, and the ubiquitous cytochrome metalloenzymes-and the non-heme, iron-containing proteins aconitase and methane monooxygenase Appropriate for one-semester bioinorganic chemistry courses for chemistry, biochemistry, and biology majors, this text is ideal for upper-level undergraduate and beginning graduate students. It is also a valuable reference for practitioners and researchers who need a general introduction to bioinorganic chemistry, as well as chemists who want an accessible desk reference.

Download or read book Computational Molecular Modelling in Structural Biology written by and published by Academic Press. This book was released on 2018-08-24 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computational Molecular modelling in Structural Biology, Volume 113, the latest release in the Advances in Protein Chemistry and Structural Biology, highlights new advances in the field, with this new volume presenting interesting chapters on charting the Bromodomain BRD4: Towards the Identification of Novel Inhibitors with Molecular Similarity and Receptor Mapping, and Computational Methods to Discover Compounds for the Treatment of Chagas Disease. Provides the authority and expertise of leading contributors from an international board of authors Presents the latest release in the Advances in Protein Chemistry and Structural Biology series Updated, with the latest information on Computational Molecular Modelling in Structural Biology

Download or read book Quantum Tunnelling in Enzyme catalysed Reactions written by Rudolf K. Allemann and published by Royal Society of Chemistry. This book was released on 2009 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, there has been an explosion in knowledge and research associated with the field of enzyme catalysis and H-tunneling. Rich in its breath and depth, this introduction to modern theories and methods of study is suitable for experienced researchers those new to the subject. Edited by two leading experts, and bringing together the foremost practitioners in the field, this up-to-date account of a rapidly developing field sits at the interface between biology, chemistry and physics. It covers computational, kinetic and structural analysis of tunnelling and the synergy in combining these methods (with a major focus on H-tunneling reactions in enzyme systems). The book starts with a brief overview of proton and electron transfer history by Nobel Laureate, Rudolph A. Marcus. The reader is then guided through chapters covering almost every aspect of reactions in enzyme catalysis ranging from descriptions of the relevant quantum theory and quantum/classical theoretical methodology to the description of experimental results. The theoretical interpretation of these large systems includes both quantum mechanical and statistical mechanical computations, as well as simple more approximate models. Most of the chapters focus on enzymatic catalysis of hydride, proton and H" transfer, an example of the latter being proton coupled electron transfer. There is also a chapter on electron transfer in proteins. This is timely since the theoretical framework developed fifty years ago for treating electron transfers has now been adapted to H-transfers and electron transfers in proteins. Accessible in style, this book is suitable for a wide audience but will be particularly useful to advanced level undergraduates, postgraduates and early postdoctoral workers.