Download or read book Allosteric Regulatory Enzymes written by Thomas W. Traut and published by Springer Science & Business Media. This book was released on 2007-09-11 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the most recent developments in the analysis of allosteric enzymes and provides a logical introduction to the limits for enzyme function as dictated by the factors that are limits for life. The book presents a complete description of all the mechanisms used for changing enzyme activity. It is extensively illustrated to clarify kinetic and regulatory properties. Eight enzymes are used as model systems after extensive study of their mechanisms. Wherever possible, the human form of the enzyme is used to illustrate the regulatory features.
Download or read book Mechanisms of Cooperativity and Allosteric Regulation in Proteins written by Max F. Perutz and published by CUP Archive. This book was released on 1990-05-17 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Allosteric Regulation written by Masanobu Tokushige and published by . This book was released on 1972 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Allosteric Enzymes written by Guy Herve and published by CRC Press. This book was released on 2020-11-25 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book compiles detailed information concerning a dozen of the best known allosteric enzymes, and so allows the comparison of their regulatory mechanisms and the confrontation of these mechanisms with the theoretical models. Stimulating and unexpected ideas emerge from these comparisons and emphasize the importance of developing various methods of investigation such as crystallography, X-ray solution scattering, and the study of fast movements in proteins and site-directed mutagenesis. This book is addressed to students and researchers interested in structure-function relationship in proteins, enzymology and metabolic regulation. It is also a basis for teaching.
Download or read book Quantitative Aspects of Allosteric Mechanisms written by A. Levitzki and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this monograph is to summarize the essential features which characterize the behavior of regulatory systems. Firstly we discuss the laws which govern ligand binding in thermodynamic terms. The basic cooperative and allosteric phenomena are des cribed in thermodynamic terms without assuming any particular mo del. Then the molecular models developed by Monod, Wyman and Changeux and by Koshland, Nemethy and Filmer are presented in detail. Special emphasis has been given to the analysis of the Hill coefficient and its meaning both in thermodynamic terms and in terms of the two allosteric models: the concerted model of Monod, Wyman and Changeux and the sequential model of Koshland, Nemethy and Filmer. Special types of cooperativities are dis cussed in some detail namely, cooperativity stemming from ligand coupled protein association or dissociation, negative cooperati vity and half-of-the-sites reactivity. A slightly extended space was devoted to the discussion of negative cooperativity and half of-the-sites reactivity, since the existence of these phenomena and their possible biological importance is less of a common knowledge than positive cooperativity. This monograph does not attempt to be a review of specific examples analyzed according to one model or another. Rather, an attempt is made to provide the reader with the quantitative tools to analyze any specific regulatory system. Last but not least, I would like to thank Prof. F. W. Dahlquist from the Institute of Molecular Biology, the University of Oregon (Eugene) and Prof. D. E. Koshland, Jr.
Download or read book Allostery written by Aron W. Fenton and published by Humana Press. This book was released on 2016-08-23 with total page 439 pages. Available in PDF, EPUB and Kindle. Book excerpt: Despite considerable variability within the scientific community, allosteric regulation can best be defined functionally as how a macromolecule binds one ligand differently when a second ligand is or is not pre-bound to the macromolecule, which constitutes a vital aspect of protein structure/function. In Allostery: Methods and Protocols, expert researchers in the field provide key techniques to investigate this biological phenomenon. Focusing on heterotropic systems with some coverage of homotropic systems, this volume covers the monitoring of allosteric function, allosteric conformational changes, and allosteric changes in protein dynamics/sub-population distribution, as well as topics such as macromolecular and ligand engineering of allosteric functions and computational aids in the study of allostery. Written in the highly successful Methods in Molecular BiologyTM series format, the chapters include the kind of detailed description and implementation advice that is crucial for getting optimal results in the laboratory. Thorough and intuitive, Allostery: Methods and Protocols aids scientists in continuing to study ligand-induced, through-protein effects on protein function (ligand binding/catalysis), a phenomenon that is well recognized through the history of the life sciences and very poorly understood at the molecular level.
Download or read book Extrasynaptic GABAA Receptors written by Adam C. Errington and published by Springer. This book was released on 2014-09-22 with total page 301 pages. Available in PDF, EPUB and Kindle. Book excerpt: GABA is the principal inhibitory neurotransmitter in the CNS and acts via GABAA and GABAB receptors. Recently, a novel form of GABAA receptor-mediated inhibition, termed “tonic” inhibition, has been described. Whereas synaptic GABAA receptors underlie classical “phasic” GABAA receptor-mediated inhibition (inhibitory postsynaptic currents), tonic GABAA receptor-mediated inhibition results from the activation of extrasynaptic receptors by low concentrations of ambient GABA. Extrasynaptic GABAA receptors are composed of receptor subunits that convey biophysical properties ideally suited to the generation of persistent inhibition and are pharmacologically and functionally distinct from their synaptic counterparts. This book highlights ongoing work examining the properties of recombinant and native extrasynaptic GABAA receptors and their preferential targeting by endogenous and clinically relevant agents. In addition, it emphasizes the important role of extrasynaptic GABAA receptors in GABAergic inhibition throughout the CNS and identifies them as a major player in both physiological and pathophysiological processes.
Download or read book Allostery written by Aron W. Fenton and published by Humana Press. This book was released on 2011-11-04 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Despite considerable variability within the scientific community, allosteric regulation can best be defined functionally as how a macromolecule binds one ligand differently when a second ligand is or is not pre-bound to the macromolecule, which constitutes a vital aspect of protein structure/function. In Allostery: Methods and Protocols, expert researchers in the field provide key techniques to investigate this biological phenomenon. Focusing on heterotropic systems with some coverage of homotropic systems, this volume covers the monitoring of allosteric function, allosteric conformational changes, and allosteric changes in protein dynamics/sub-population distribution, as well as topics such as macromolecular and ligand engineering of allosteric functions and computational aids in the study of allostery. Written in the highly successful Methods in Molecular BiologyTM series format, the chapters include the kind of detailed description and implementation advice that is crucial for getting optimal results in the laboratory. Thorough and intuitive, Allostery: Methods and Protocols aids scientists in continuing to study ligand-induced, through-protein effects on protein function (ligand binding/catalysis), a phenomenon that is well recognized through the history of the life sciences and very poorly understood at the molecular level.
Download or read book Regulation of Tissue Oxygenation Second Edition written by Roland N. Pittman and published by Biota Publishing. This book was released on 2016-08-18 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt: This presentation describes various aspects of the regulation of tissue oxygenation, including the roles of the circulatory system, respiratory system, and blood, the carrier of oxygen within these components of the cardiorespiratory system. The respiratory system takes oxygen from the atmosphere and transports it by diffusion from the air in the alveoli to the blood flowing through the pulmonary capillaries. The cardiovascular system then moves the oxygenated blood from the heart to the microcirculation of the various organs by convection, where oxygen is released from hemoglobin in the red blood cells and moves to the parenchymal cells of each tissue by diffusion. Oxygen that has diffused into cells is then utilized in the mitochondria to produce adenosine triphosphate (ATP), the energy currency of all cells. The mitochondria are able to produce ATP until the oxygen tension or PO2 on the cell surface falls to a critical level of about 4–5 mm Hg. Thus, in order to meet the energetic needs of cells, it is important to maintain a continuous supply of oxygen to the mitochondria at or above the critical PO2 . In order to accomplish this desired outcome, the cardiorespiratory system, including the blood, must be capable of regulation to ensure survival of all tissues under a wide range of circumstances. The purpose of this presentation is to provide basic information about the operation and regulation of the cardiovascular and respiratory systems, as well as the properties of the blood and parenchymal cells, so that a fundamental understanding of the regulation of tissue oxygenation is achieved.
Download or read book Supramolecular Catalysis written by Piet W.N.M. van Leeuwen and published by John Wiley & Sons. This book was released on 2021-12-31 with total page 708 pages. Available in PDF, EPUB and Kindle. Book excerpt: Supramolecular Catalysis Provides a timely and detailed overview of the expanding field of supramolecular catalysis The subdiscpline of supramolecular catalysis has expanded in recent years, benefiting from the development of homogeneous catalysis and supramolecular chemistry. Supramolecular catalysis allows chemists to design custom-tailored metal and organic catalysts by devising non-covalent interactions between the various components of the reaction. Edited by two world-renowned researchers, Supramolecular Catalysis: New Directions and Developments summarizes the most significant developments in the dynamic, interdisciplinary field. Contributions from an international panel of more than forty experts address a broad range of topics covering both organic and metal catalysts, including emergent catalysis by self-replicating molecules, switchable catalysis using allosteric effects, supramolecular helical catalysts, and transition metal catalysis in confined spaces. This authoritative and up-to-date volume: Covers ligand-ligand interactions, assembled multi-component catalysts, ligand-substrate interactions, and supramolecular organocatalysis and non-classical interactions Presents recent work on supramolecular catalysis in water, supramolecular allosteric catalysis, and catalysis promoted by discrete cages, capsules, and other confined environments Highlights current research trends and discusses the future of supramolecular catalysis Includes full references and numerous figures, tables, and color illustrations Supramolecular Catalysis: New Directions and Developments is essential reading for catalytic chemists, complex chemists, biochemists, polymer chemists, spectroscopists, and chemists working with organometallics.
Download or read book The Mechanism of Allosteric Regulation in Soluble Guanylate Cyclase written by Rahul Purohit and published by . This book was released on 2014 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Study of Allosteric Mechanisms Involved in the Regulation of Substrate Channeling in Tryptophan Synthase written by Rodney Morton Harris and published by . This book was released on 2004 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Regulation of Enzyme Activity and Allosteric Interactions written by Federation of European Biochemical Societies and published by . This book was released on 1968 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Evolution of Allosteric Regulation in Chorismate Mutase written by Evan Nelson and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Allostery, or "action at a distance," is important for the function of many enzymes, and can be thought of as the ways in which proteins communicate with their environment and express their cellular needs. Here, we use Saccharomyces cerevisiae chorismate mutase (ScCM) as a model system for studying allostery. ScCM is a homodimeric enzyme that is allosterically inhibited by tyrosine, allosterically activated by tryptophan, and displays substrate cooperativity. ScCM has sequence and structural similarity to other fungal and plant chorismate mutase enzymes, although not all of these enzymes are allosterically regulated in the same fashion. To gain information about the sequence determinants of allosteric regulation, I employed bioinformatic analyses to study sequence differences between fungal and plant chorismate mutases. However, the high degree of similarity between these enzymes did not provide much insight into their different allosteric regulation patterns. These results suggested that differences in allosteric regulation were not encoded only according to conserved amino acid residues, and more in-depth analysis (e.g. amino acid covariance analysis) may be required. I also further explored the ScCM T226I variant, which previous studies indicated was "locked" in the more active "R" conformation, using nuclear magnetic resonance spectroscopy to gain more insight into the solution characteristics of this variant. These studies indicated that contrary to the results of previous studies, the introduction of the T226I mutation causes structural changes (e.g. misfolding) to the ScCM protein that are observable in NMR spectra.
Download or read book Cooperativity and Regulation in Biochemical Processes written by Arieh Y. Ben-Naim and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first book that attempts to study the origin of cooperatvity in binding systems from the molecular point of view. The molecular approach provides a deeper insight into the mechanism of cooperativity and regulation, than the traditional phenomenological approach. This book uses the tools of statistical mechanics to present the molecular theory of cooperativity. Cooperativity is used in a variety of processes-such as loading and unloading of oxygen at relatively small pressure differences; maintaining an almost constant concentration of various compounds in living cells; and switching on and off the reading of genetic information. This book may be used as a textbook by graduate students in Chemistry, Biochemistry and Biophysics, and will also be of interest to researchers in theoretical biochemistry.
Download or read book Regulation of Enzyme Activity and Allosteric Interactions written by J. P. Changeux and published by . This book was released on 1968 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
