Download or read book The Use of Protein Dynamics in the Study of Protein Conformational Transition and Functionality and Its Relevance in Drug Design written by JoAnne Jean Babula and published by . This book was released on 2020 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: Misregulation of protein signaling pathways is the basis for many human diseases, and thus 95% of Food and Drug Administration approved drugs target proteins. Proteins are dynamic entities which can undergo transitions to reach different conformational states. The conformational state of a protein, or its three-dimensional shape, is intricately linked to functions, such as association with endogenous or exogenous binding partners, or catalysis. Thus, it is of interest to the pharmacological community to understand the mechanisms of protein conformational state transitions in order to better target and control protein functions. In two case studies, I show the importance of understanding protein dynamics in protein function and drug design. In the case of human immunodeficiency virus-1 (HIV-1) protease, a tremendous "open-and-closed" conformational transition is revealed by Molecular Dynamics Simulations (MDS). Through observing the dramatic difference in effectiveness of two Darunavir inhibitor derivatives differentiated by a single atom at locking the protease in the closed conformation, we discovered the residues and mechanism that lead to the protease's conformational transition. This mechanism also explained the significant difference in the binding conformation and binding affinity of these two inhibitors. This study provides insight on how to improve the potency and anti-viral capacity of these compounds. In the second case study, MDS enabled us to observe the conformational transitions of a family of seven isoforms known as the 14-3-3 proteins. Many vital cellular processes involve all or select 14-3-3 isoforms, making this family very difficult to target. Through MDS, I discovered different conformational samplings among these 14-3-3 isoforms which were then validated by SAXS. Subsequently, a FRET-based ligand binding assay was developed which can screen for preferential 14-3-3 isoform binding of endogenous ligands, giving hope that using conformations unique to a 14-3-3 isoform of interest can provide a method for selective drug design
Download or read book Protein Conformational Dynamics written by Ke-li Han and published by Springer Science & Business Media. This book was released on 2014-01-20 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses how biological molecules exert their function and regulate biological processes, with a clear focus on how conformational dynamics of proteins are critical in this respect. In the last decade, the advancements in computational biology, nuclear magnetic resonance including paramagnetic relaxation enhancement, and fluorescence-based ensemble/single-molecule techniques have shown that biological molecules (proteins, DNAs and RNAs) fluctuate under equilibrium conditions. The conformational and energetic spaces that these fluctuations explore likely contain active conformations that are critical for their function. More interestingly, these fluctuations can respond actively to external cues, which introduces layers of tight regulation on the biological processes that they dictate. A growing number of studies have suggested that conformational dynamics of proteins govern their role in regulating biological functions, examples of this regulation can be found in signal transduction, molecular recognition, apoptosis, protein / ion / other molecules translocation and gene expression. On the experimental side, the technical advances have offered deep insights into the conformational motions of a number of proteins. These studies greatly enrich our knowledge of the interplay between structure and function. On the theoretical side, novel approaches and detailed computational simulations have provided powerful tools in the study of enzyme catalysis, protein / drug design, protein / ion / other molecule translocation and protein folding/aggregation, to name but a few. This work contains detailed information, not only on the conformational motions of biological systems, but also on the potential governing forces of conformational dynamics (transient interactions, chemical and physical origins, thermodynamic properties). New developments in computational simulations will greatly enhance our understanding of how these molecules function in various biological events.
Download or read book Protein Dynamics Function and Design written by Oleg Jardetzky and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume is a collection of articles from the proceedings of the International School of Structural Biology and Magnetic Resonance 3rd Course: Protein Dynamics, Function, and Design. This NATO Advance Study Institute was held in Erice at the Ettore Majorana Centre for Scientific Culture on April 16-28, 1997. The aim of the Institute was to bring together experts applyipg different physical methods to problems of macro molecular dynamics-notably x-ray diffraction, NMR and other forms of spectroscopy, and molecular dynamics simulations. Emphasis was placed on those systems and types of problems-such as mechanisms of allosteric control, signal transmission, induced fit to different ligands with its implications for drug design, and the effects of dynamics on structure determination-where a correlation of findings obtained by different methods could shed the most light on the mechanisms involved and stimulate the search for new approaches. The individual articles represent the state of the art in each of the areas cov ered and provide a guide to the original literature in this rapidly developing field. v CONTENTS 1. Determining Structures of ProteinlDN A Complexes by NMR Angela M. Gronenbom and G. Marius Clore 2. Fitting Protein Structures to Experimental Data: Lessons from before Your Mother Was Born . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Jeffrey C. Hoch, Alan S. Stem, and Peter J. Connolly 3. Multisubunit Allosteric Proteins. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 William N. Lipscomb 4. Studying Protein Structure and Function by Directed Evolution: Examples with Engineered Antibodies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Andreas Pliickthun 5. High Pressure Effects on Protein Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Download or read book Understanding Protein Dynamics Binding and Allostery for Drug Design written by Guang Hu and published by Frontiers Media SA. This book was released on 2021-06-08 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Computational Investigations of Protein Dynamics and Its Implications for Biological Functions written by and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Protein protein Complexes written by Martin Zacharias and published by World Scientific. This book was released on 2010 with total page 401 pages. Available in PDF, EPUB and Kindle. Book excerpt: Given the immense progress achieved in elucidating protein-protein complex structures and in the field of protein interaction modeling, there is great demand for a book that gives interested researchers/students a comprehensive overview of the field. This book does just that. It focuses on what can be learned about protein-protein interactions from the analysis of protein-protein complex structures and interfaces. What are the driving forces for protein-protein association? How can we extract the mechanism of specific recognition from studying protein-protein interfaces? How can this knowledge be used to predict and design protein-protein interactions (interaction regions and complex structures)? What methods are currently employed to design protein-protein interactions, and how can we influence protein-protein interactions by mutagenesis and small-molecule drugs or peptide mimetics?The book consists of about 15 review chapters, written by experts, on the characterization of protein-protein interfaces, structure determination of protein complexes (by NMR and X-ray), theory of protein-protein binding, dynamics of protein interfaces, bioinformatics methods to predict interaction regions, and prediction of protein-protein complex structures (docking and homology modeling of complexes, etcetera.) and design of protein-protein interactions. It serves as a bridge between studying/analyzing protein-protein complex structures (interfaces), predicting interactions, and influencing/designing interactions.
Download or read book Intrinsically Disordered Proteins written by Nicola Salvi and published by Academic Press. This book was released on 2019-06-14 with total page 355 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intrinsically Disordered Proteins: Dynamics, Binding, and Function thoroughly examines and ties together the fundamental biochemical functions of intrinsically disordered proteins (IDPs) and intrinsically disordered regions (IDRs), including signaling, binding, and regulation, with the methodology for study and the associated pathways for drug design and therapeutic intervention. The role of new mechanistic, computational, and experimental approaches in IDP study are explored in depth, with methods for the characterization of IDP dynamics; models, simulations, and mechanisms of IDP and IDR binding; and biological and medical implications of IDP dynamics prominently featured. Written and edited by leading scientists in the field, this book explores groundbreaking areas such as ensemble descriptions of IDPs and IDRs, single-molecule studies of IDPs and IDRs, IDPs and IDRs in membraneless organelles, and molecular mechanisms of fibrillation of IDPs. Intrinsically Disordered Proteins provides students and researchers in biochemistry, molecular biology, and applied microbiology with a comprehensive and updated discussion of the complex dynamics of IDPs and IDRs. Provides in-depth discussion of fundamental IDP and IDR dynamics, function, and binding, with mechanistic insight to support new drug development Describes the role of new computational and experimental approaches in characterizing the binding of IDPs to their functional targets Features chapter contributions from international experts in IDP and IDR biochemical function and methods of study
Download or read book Protein Interactions as Targets in Drug Discovery written by Rossen Donev and published by Academic Press. This book was released on 2020-04-18 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: Protein Interactions as Targets in Drug Discovery, Volume 121, is dedicated to the design of therapeutics, both experimental and computational, that target protein interactions. Chapters in this new release include Trends in structure based drug design with protein targets, From fragment- to peptide-protein interaction: addressing the structural basis of binding using Supervised Molecular Dynamics (SuMD), Protein-protein and protein-ligand interactions: identification of potential inhibitors through computational analysis, Aromatic-aromatic interactions in protein-drug and protein-protein interactions, Role of protein-protein interaction in allosteric drug design within the human methyltransferome, and much more. Integrates experimental and computational methods for studying protein interactions and their modulation by potential therapeutics Contains timely chapters written by well-renown authorities in their field Covers information that is well supported by a number of high quality illustrations, figures and tables Targets a very wide audience of specialists, researchers and students
Download or read book Path metadynamics written by Grisell Díaz Leines and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The biological functions of proteins are ultimately governed by the dynamical properties of their large conformational transitions rooted on multidimensional free energy landscapes. Straightforward molecular dynamics simulation provides a mechanistically detailed picture of conformational transitions, but is hampered by the long timescales of these processes, which are rare events compared to the molecular timescales. In order to overcome these difficulties, we present in this thesis a new method, path-metadynamics, for the study of rare events. Path-metadynamics aims to explore high dimensional free energy landscapes and determine local likely transition pathways. The formalism works within the framework of a history-dependent bias potential applied to a flexible path-variable. Control of the sampling of the orthogonal modes recovers the average path and the minimum free energy path as limiting cases. Simultaneously the bias potential estimates the free energy profile along the path. The method has trivial scaling with the number of order parameters and this makes it suitable for the study of complex transitions. We have applied path-metadynamics to investigate the partial unfolding of a relevant photoreceptor, the photoactive yellow protein, and the formation/dissociation mechanism of a coiled coil, the leucine zipper domain. Our results demonstrate that path-metadynamics enables the calculation of rate constants, the localization of transition states, and the mapping of the free energy along a transition path described on a high-dimensional space. The likely transition paths obtained provide unique molecular insight about the protein conformational changes investigated. This approach opens a new way for studying complex rare events transitions."--Samenvatting auteur.
Download or read book Protein Protein Interactions in Drug Discovery written by Alexander Dömling and published by John Wiley & Sons. This book was released on 2013-01-02 with total page 493 pages. Available in PDF, EPUB and Kindle. Book excerpt: Treating protein-protein interactions as a novel and highly promising class of drug targets, this volume introduces the underlying strategies step by step, from the biology of PPIs to biophysical and computational methods for their investigation. The main part of the book describes examples of protein targets for which small molecule modulators have been developed, covering such diverse fields as cancer, autoimmune disorders and infectious diseases. Tailor-made for the practicing medicinal chemist, this ready reference includes a wide selection of case studies taken straight from the development pipeline of major pharmaceutical companies to illustrate the power and potential of this approach. From the contents: * Prediction of intra- and inter-species protein-protein interactions facilitating systems biology studies * Modulators of protein-protein interactions: The importance of Three-Dimensionality * Interactive technologies for leveraging the known chemistry of anchor residues * SH3 Domains as Drug Targets * P53 MDM2 Antagonists: Towards Non Genotoxic Anticancer Treatments * Inhibition of LFA-1/ICAM interaction for treatment of autoimmune diseases * The PIF-binding pocket of AGC kinases * Peptidic inhibitors of protein-protein interactions for cell adhesion receptors * The REPLACE Strategy for generating Non-ATP competitive Inhibitors of Cell-Cycle Protein Kinases and more
Download or read book Research Awards Index written by and published by . This book was released on 1989 with total page 776 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Protein Structure written by Daniel Chasman and published by CRC Press. This book was released on 2003-03-18 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text offers in-depth perspectives on every aspect of protein structure identification, assessment, characterization, and utilization, for a clear understanding of the diversity of protein shapes, variations in protein function, and structure-based drug design. The authors cover numerous high-throughput technologies as well as computational methods to study protein structures and residues. A valuable reference, this book reflects current trends in the effort to solve new structures arising from genome initiatives, details methods to detect and identify errors in the prediction of protein structural models, and outlines challenges in the conversion of routine processes into high-throughput platforms.
Download or read book Protein Conformation written by Derek J. Chadwick and published by John Wiley & Sons. This book was released on 2008-04-30 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: How the amino acid sequence of a protein determines its three-dimensional structure is a major problem in biology and chemistry. Leading experts in the fields of NMR spectroscopy, X-ray crystallography, protein engineering and molecular modeling offer provocative insights into current views on the protein folding problem and various aspects for future progress.
Download or read book Protein Allostery in Drug Discovery written by Jian Zhang and published by Springer Nature. This book was released on 2019-11-09 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book focuses on protein allostery in drug discovery. Allosteric regulation, ʹthe second secret of lifeʹ, fine-tunes virtually most biological processes and controls physiological activities. Allostery can both cause human diseases and contribute to development of new therapeutics. Allosteric drugs exhibit unparalleled advantages compared to conventional orthosteric drugs, rendering the development of allosteric modulators as an appealing strategy to improve selectivity and pharmacodynamic properties in drug leads. The Series delineates the immense significance of protein allostery—as demonstrated by recent advances in the repertoires of the concept, its mechanistic mechanisms, and networks, characteristics of allosteric proteins, modulators, and sites, development of computational and experimental methods to predict allosteric sites, small-molecule allosteric modulators of protein kinases and G-protein coupled receptors, engineering allostery, and the underlying role of allostery in precise medicine. Comprehensive understanding of protein allostery is expected to guide the rational design of allosteric drugs for the treatment of human diseases. The book would be useful for scientists and students in the field of protein science and Pharmacology etc.
Download or read book Protein Ligand Interactions written by Hans-Joachim Böhm and published by John Wiley & Sons. This book was released on 2006-03-06 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: The lock-and-key principle formulated by Emil Fischer as early as the end of the 19th century has still not lost any of its significance for the life sciences. The basic aspects of ligand-protein interaction may be summarized under the term 'molecular recognition' and concern the specificity as well as stability of ligand binding. Molecular recognition is thus a central topic in the development of active substances, since stability and specificity determine whether a substance can be used as a drug. Nowadays, computer-aided prediction and intelligent molecular design make a large contribution to the constant search for, e. g., improved enzyme inhibitors, and new concepts such as that of pharmacophores are being developed. An up-to-date presentation of an eternally young topic, this book is an indispensable information source for chemists, biochemists and pharmacologists dealing with the binding of ligands to proteins.
Download or read book Integrative Structural Biology of Proteins and Macromolecular Assemblies Bridging Experiments and Simulations written by Paulo Ricardo Batista and published by Frontiers Media SA. This book was released on 2022-07-26 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Structure and Function of GPCRs written by Guillaume Lebon and published by Springer. This book was released on 2019-08-01 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces readers to the latest advances in G protein-coupled receptor (GPCR) biology. It reviews our current understanding of the structural basis of ligand binding and allosteric mechanisms, following a decade of technological breakthroughs. Several examples of structure-based drug discovery are presented, together with the future challenges involved in designing better drugs that target GPCRs. In turn, the book illustrates the important concept of GPCR biased signaling in physiological contexts, and presents fluorescent- and light-based methodologies frequently used to measure GPCR signaling or to trace their dynamics in cells upon ligand activation. Taken together, the chapters provide an essential overview and toolkit for new scientific investigators who plan to develop GPCR projects. All chapters were written by experts in their respective fields, and share valuable insights and powerful methodologies for the GPCR field.
