Download or read book Gramicidin and Related Ion Channel Forming Peptides written by Derek J. Chadwick and published by John Wiley & Sons. This book was released on 2008-04-30 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gramicidin channels have been studied intensively for more than 25 years. They serve as model transport systems for large protein ion channels, since it is difficult to glean high-resolution structural information on the latter. This book includes contributions from virtually all the major scientists studying gramicidin channels and is the only compilation of work in this field. It discusses crystallographic, spectroscopic, electrophysiological and computational studies, especially in the light of the recent availability of high-resolution structural data, and it compares these with insights derived from larger systems. As well as drawing together much new and exciting work in this field, it provides pointers to promising new research directions.
Download or read book Nanoscale Sensing Methodology Via Functional Control of an Ion Channel forming Peptide Gramicidin A written by Michael X. Macrae and published by . This book was released on 2011 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gramicidin ion channels are formed by the association of two [Beta]-helix pentadecapeptides, each spanning half the lipid bilayer. A single dimerization event enables the flux of millions of cations across the bilayer per second. This signal amplification allows for the detection and monitoring of events on the single molecule level - a feat seldomly accomplished. Gramicidin is also remarkably simple to use as it both spontaneously self-incorporates into the membrane and forms channels under a broad range of conditions. Lastly, work primarily done by our lab has developed facile synthetic techniques for functional modifications of the native channel structure. This thesis represents a two-fold effort, both in the improved fundamental understanding of gramicidin A, as well as the exploration of this platform's utility as a tool for more applied problems. Through a comprehensive understanding of the influences which a permanent charge affixed to the channel entrance exert on both channel conductance and open channel lifetime, the ability to utilize the functional response to a wide variety of external stimuli has been realized.
Download or read book Fighting Multidrug Resistance with Herbal Extracts Essential Oils and Their Components written by Mahendra Rai and published by Academic Press. This book was released on 2013-05-24 with total page 291 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fighting Multidrug Resistance with Herbal Extracts, Essential Oils and their Components offers scientists a single source aimed at fighting specific multidrug-resistant (MDR) microorganisms such as bacteria, protozoans, viruses and fungi using natural products. This essential reference discusses herbal extracts and essential oils used or under investigation to treat MDR infections, as well as those containing antimicrobial activity that could be of potential interest in future studies against MDR microorganisms. The need to combat multidrug-resistant microorganisms is an urgent one and this book provides important coverage of mechanism of action, the advantages and disadvantages of using herbal extracts, essential oils and their components and more to aid researchers in effective antimicrobial drug discovery Addresses the need to develop safe and effective approaches to coping with resistance to all classes of antimicrobial drugs Provides readers with current evidence-based content aimed at using herbal extracts and essential oils in antimicrobial drug development Includes chapters devoted to the activity of herbal products against herpes, AIDS, tuberculosis, drug-resistant cancer cells and more
Download or read book Ionic Channels of Excitable Membranes written by Bertil Hille and published by Sinauer Associates, Incorporated. This book was released on 1992 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new, fully revised and expanded edition of Ionic Channels of Excitable Membranes includes new chapters on fast chemical synapses, modulation through G protein coupled receptors and second messenger systems, molecules cloning, site directed mutagenesis, and cell biology. It begins with the classical biophysical work of Hodgkin and Huxley and then weaves a description of the known ionic channels together with their biological functions. The book continues by developing the physical and molecular principles needed for explaining permeation, gating, pharmacological modification, and molecular diversity, and ends with a discussion of channel evolution. Ionic Channels of Excitable Membranes is written to be accessible and interesting to biological and physical scientists of all kinds.
Download or read book The World of Peptides written by Theodor Wieland and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 311 pages. Available in PDF, EPUB and Kindle. Book excerpt: Almost two centuries ago proteins were recognized as the primary materials (proteios = primary) oflife, but the significance and wide role of peptides (from pepsis = digestion) in practically all life pro cesses has only become apparent in the last few decades. Biologi cally active peptides are now being discovered at rapid intervals in the brain and in other organs including the heart, in the skin of amphibians and many other tissues. Peptides and peptide-like compounds are found among toxins and antibiotics. It is unlikely that this process, an almost explosive broadening of the field, will come to a sudden halt. By now it is obvious that Nature has used the combination of a small to moderate number of amino acids to generate a great variety of agonists with specific and often highly sophisticated functions. Thus, peptide chemistry must be regarded as a discipline in its own right, a major branch of biochemistry, fairly separate from the chemistry of proteins. Because of the important role played by synthesis both in the study and in the practical preparation of peptides, their area can be considered as belonging to bio-organic chemistry as well. The already overwhelming and still increasing body of know ledge renders an account of the history of peptide chemistry more and more difficult. It appears therefore timely to look back, to take stock and to recall the important stages in the development of a new discipline.
Download or read book Peptide Lipid Interactions written by Sidney A. Simon and published by Academic Press. This book was released on 2002-11-13 with total page 606 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains a comprehensive overview of peptide-lipid interactions by leading researchers. The first part covers theoretical concepts, experimental considerations, and thermodynamics. The second part presents new results obtained through site-directed EPR, electron microscopy, NMR, isothermal calorimetry, and fluorescence quenching. The final part covers problems of biological interest, including signal transduction, membrane transport, fusion, and adhesion. Key Features * world-renowned experts * state-of-the-art experimental methods * monolayers, bilayers, biological membranes * theoretical aspects and computer simulations * rafts * synaptic transmission * membrane fusion * signal transduction
Download or read book Molecular Biology of The Cell written by Bruce Alberts and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physiology and Pathology of Chloride Transporters and Channels in the Nervous System written by F. Javier Alvarez-Leefmans and published by Academic Press. This book was released on 2009-08-22 with total page 630 pages. Available in PDF, EPUB and Kindle. Book excerpt: The importance of chloride ions in cell physiology has not been fully recognized until recently, in spite of the fact that chloride (Cl-), together with bicarbonate, is the most abundant free anion in animal cells, and performs or determines fundamental biological functions in all tissues. For many years it was thought that Cl- was distributed in thermodynamic equilibrium across the plasma membrane of most cells. Research carried out during the last couple of decades has led to a dramatic change in this simplistic view. We now know that most animal cells, neurons included, exhibit a non-equilibrium distribution of Cl- across their plasma membranes. Over the last 10 to 15 years, with the growth of molecular biology and the advent of new optical methods, an enormous amount of exciting new information has become available on the molecular structure and function of Cl- channels and carriers. In nerve cells, Cl- channels and carriers play key functional roles in GABA- and glycine-mediated synaptic inhibition, neuronal growth and development, extracellular potassium scavenging, sensory-transduction, neurotransmitter uptake and cell volume control. Disruption of Cl- homeostasis in neurons underlies pathological conditions such as epilepsy, deafness, imbalance, brain edema and ischemia, pain and neurogenic inflammation. This book is about how chloride ions are regulated and how they cross the plasma membrane of neurons. It spans from molecular structure and function of carriers and channels involved in Cl- transport to their role in various diseases. The first comprehensive book on the structure, molecular biology, cell physiology, and role in diseases of chloride transporters / channels in the nervous system in almost 20 years Chloride is the most abundant free anion in animal cells. THis book summarizes and integrates for the first time the important research of the past two decades that has shown that Cl- channels and carriers play key functional roles in GABA- and glycine-mediated synaptic inhibition, neuronal growth and development, extracellular potassium scavenging, sensory-transduction, neurotransmitter uptake and cell volume control The first book that systematically discusses the result of disruption of Cl- homeostasis in neurons which underlies pathological conditions such as epilepsy, deafness, imbalance, brain edema and ischemia, pain and neurogenic inflammation Spanning topics from molecular structure and function of carriers and channels involved in Cl- transport to their role in various diseases Involves all of the leading researchers in the field Includes an extensive introductory section that covers basic thermodynamic and kinetics aspects of Cl- transport, as well as current methods for studying Cl- regulation, spanning from fluorescent dyes in single cells to knock-out models to make the book available for a growing population of graduate students and postdocs entering the field
Download or read book Channels Carriers and Pumps written by Wilfred D. Stein and published by Elsevier. This book was released on 2014-12-09 with total page 423 pages. Available in PDF, EPUB and Kindle. Book excerpt: An introduction to the principles of membrane transport: How molecules and ions move across the cell membrane by simple diffusion and by making use of specialized membrane components (channels, carriers, and pumps). The text emphasizes the quantitative aspects of such movement and its interpretation in terms of transport kinetics. Molecular studies of channels, carriers, and pumps are described in detail as well as structural principles and the fundamental similarities between the various transporters and their evolutionary interrelationships. The regulation of transporters and their role in health and disease are also considered. Provides an introduction to the properties of transport proteins: channels, carriers, and pumps Presents up-to-date information on the structure of transport proteins and on their function and regulation Includes introductions to transport kinetics and to the cloning of genes that code transport proteins Furnishes a link between the experimental basis of the subject and theoretical model building
Download or read book Fmoc Solid Phase Peptide Synthesis written by W. Chan and published by OUP Oxford. This book was released on 1999-12-16 with total page 371 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the publication of Atherton and Sheppard's volume, the technique of Fmoc solid-phase peptide synthesis has matured considerably and is now the standard approach for the routine production of peptides. The focus of this new volume is much broader, and covers the essential procedures.
Download or read book Membrane Organization and Dynamics written by Amitabha Chattopadhyay and published by Springer. This book was released on 2017-12-06 with total page 387 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume brings together information on membrane organization and dynamics from a variety of spectroscopic, microscopic and simulation approaches, spanning a broad range of time scales. The implication of such dynamic information on membrane function in health and disease is a topic of contemporary interest. The chapters cover various aspects of membrane lipid and protein dynamics, explored using a battery of experimental and theoretical approaches. The synthesis of information and knowledge gained by utilizing multiple approaches will provide the reader with a comprehensive understanding of the underlying membrane dynamics and function, which will help to develop robust dynamic models for the understanding of membrane function in healthy and diseased states. In the last few years, crystal structures of an impressive number of membrane proteins have been reported, thanks to tremendous advances in membrane protein crystallization techniques. Some of these recently solved structures belong to the G protein-coupled receptor (GPCR) family, which are particularly difficult to crystallize due to their intrinsic flexibility. Nonetheless, these static structures do not provide the necessary information to understand the function of membrane proteins in the complex membrane milieu. This volume will address the dynamic nature of membrane proteins within the membrane and will provide the reader with an up-to date overview of the theory and practical approaches that can be used. This volume will be invaluable to researchers working in a wide range of scientific areas, from biochemistry and molecular biology to biophysics and protein science. Students of these fields will also find this volume very useful. This book will also be of great use to those who are interested in the dynamic nature of biological processes.
Download or read book TRP Ion Channel Function in Sensory Transduction and Cellular Signaling Cascades written by Wolfgang B. Liedtke, MD, PH.D. and published by CRC Press. This book was released on 2006-09-29 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the first TRP ion channel was discovered in Drosophila melanogaster in 1989, the progress made in this area of signaling research has yielded findings that offer the potential to dramatically impact human health and wellness. Involved in gateway activity for all five of our senses, TRP channels have been shown to respond to a wide range of st
Download or read book Modeling of Microscale Transport in Biological Processes written by Sid M. Becker and published by Academic Press. This book was released on 2017-01-12 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modeling of Microscale Transport in Biological Processes provides a compendium of recent advances in theoretical and computational modeling of biotransport phenomena at the microscale. The simulation strategies presented range from molecular to continuum models and consider both numerical and exact solution method approaches to coupled systems of equations. The biological processes covered in this book include digestion, molecular transport, microbial swimming, cilia mediated flow, microscale heat transfer, micro-vascular flow, vesicle dynamics, transport through bio-films and bio-membranes, and microscale growth dynamics. The book is written for an advanced academic research audience in the fields of engineering (encompassing biomedical, chemical, biological, mechanical, and electrical), biology and mathematics. Although written for, and by, expert researchers, each chapter provides a strong introductory section to ensure accessibility to readers at all levels.
Download or read book Cell Physiology Source Book written by Nicholas Sperelakis and published by Elsevier. This book was released on 2012-12-02 with total page 1262 pages. Available in PDF, EPUB and Kindle. Book excerpt: This authoritative book gathers together a broad range of ideas and topics that define the field. It provides clear, concise, and comprehensive coverage of all aspects of cellular physiology from fundamental concepts to more advanced topics. The Third Edition contains substantial new material. Most chapters have been thoroughly reworked. The book includes chapters on important topics such as sensory transduction, the physiology of protozoa and bacteria, the regulation of cell division, and programmed cell death. Completely revised and updated - includes 8 new chapters on such topics as membrane structure, intracellular chloride regulation, transport, sensory receptors, pressure, and olfactory/taste receptors Includes broad coverage of both animal and plant cells Appendixes review basics of the propagation of action potentials, electricity, and cable properties Authored by leading experts in the field Clear, concise, comprehensive coverage of all aspects of cellular physiology from fundamental concepts to more advanced topics
Download or read book Prokaryotic Metabolism and Physiology written by Byung Hong Kim and published by Cambridge University Press. This book was released on 2019-05-16 with total page 509 pages. Available in PDF, EPUB and Kindle. Book excerpt: Extensive and up-to-date review of key metabolic processes in bacteria and archaea and how metabolism is regulated under various conditions.
Download or read book Electron Paramagnetic Resonance Volume 27 written by Bela E. Bode and published by Royal Society of Chemistry. This book was released on 2020-11-25 with total page 277 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electron paramagnetic resonance (EPR) applications remain highly significant in modern analytical science and this volume compiles critical coverage of developments in the recent literature. The topics covered in this volume describe contrasting types of EPR application, including rapid scan EPR, using the EPR toolkit to investigate the structural dynamics of membrane proteins and pulse dipolar EPR spectroscopy for investigating biomolecular binding events. An additional chapter reviewing the PARACAT collaboration from the EU has also been included. Providing a snapshot of the area by a handpicked group of researchers at the cutting-edge of the field, this book is a useful addition to any library supporting this research.
Download or read book Peptides written by Bernd Gutte and published by Elsevier. This book was released on 1995-10-24 with total page 527 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, research has shown the importance of peptides in neuroscience, immunology, and cell biology. Active research programs worldwide are now engaged in developing peptide-based drugs and vaccines using modification of natural peptides and proteins, design of artificial peptides and peptide mimetics, and screening of peptide and phage libraries. In this comprehensive book, the authors discuss peptide synthesis and application within the context of their increasing importance to the pharmaceutical industry. Peptides: Synthesis, Structures, and Applications explores the broad growth of information in modern peptide synthetic methods and the structure-activity relationships of synthetic polypeptides. The history of peptide chemistry Amide formation, deprotection, and disulfide formation in peptide synthesis Solid-phase peptide synthesis a-helix formation by peptides in water Stability and dynamics of peptide conformation An overview of structure-function studies of peptide hormones Neuropeptides:peptide and nonpeptide analogs Reversible inhibitors of serine proteinases Design of polypeptides Current capabilities and future possibilities of soluble chemical combinatorial libraries Epitope mapping with peptides Synthesis and applications of branched peptides in immunological methods and vaccines
