Transport Processes In Eukaryotic And Prokaryotic Organisms

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Author: W.N. Konings
Publisher: Elsevier
ISBN: 9780080543215
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Transport Processes In Eukaryotic And Prokaryotic Organisms by W.N. Konings


Original Title: Transport Processes In Eukaryotic And Prokaryotic Organisms

In recent years it has become evident that transport processes across membranes play a crucial role in many metabolic systems. The activities of these transport processes often determine the physiology of the organisms. This book presents a state of the art review on the analysis of a wide variety of transport systems from bacteria and eukaryotic cells. A selection has been made of those systems that have been studied at the molecular level with special emphasis paid to the energetic and other biophysical properties. The different classes of transport systems are presented in the following: primary transport, secondary transport, phosphotransferase systems, channels and porines and macromolecular transport. Within each class of transporters several systems are presented by the leading experts in the field, which has resulted in a very broad overview of transport processes in biological cells. In this way the differences in the mechanisms used for translocation become evident while on the other hand features common to the different transport systems are revealed.

Neuro Informatics And Neural Modelling

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Author: F. Moss
Publisher: Gulf Professional Publishing
ISBN: 9780080537429
Size: 24.57 MB
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Neuro Informatics And Neural Modelling by F. Moss


Original Title: Neuro Informatics And Neural Modelling

How do sensory neurons transmit information about environmental stimuli to the central nervous system? How do networks of neurons in the CNS decode that information, thus leading to perception and consciousness? These questions are among the oldest in neuroscience. Quite recently, new approaches to exploration of these questions have arisen, often from interdisciplinary approaches combining traditional computational neuroscience with dynamical systems theory, including nonlinear dynamics and stochastic processes. In this volume in two sections a selection of contributions about these topics from a collection of well-known authors is presented. One section focuses on computational aspects from single neurons to networks with a major emphasis on the latter. The second section highlights some insights that have recently developed out of the nonlinear systems approach.

Molecular Mechanisms In Visual Transduction

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Author: D.G. Stavenga
Publisher: Elsevier
ISBN: 9780080536774
Size: 57.41 MB
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Molecular Mechanisms In Visual Transduction by D.G. Stavenga


Original Title: Molecular Mechanisms In Visual Transduction

Molecular mechanisms in visual transduction is presently one of the most intensely studied areas in the field of signal transduction research in biological cells. Because the sense of vision plays a primary role in animal biology, and thus has been subject to long evolutionary development, the molecular and cellular mechanisms underlying vision have a high degree of sensitivity and versatility. The aims of visual transduction research are first to determine which molecules participate, and then to understand how they act in concert to produce the exquisite electrical responses of the photoreceptor cells. Since the 1940s [1] we have known that rod vision begins with the capture of a quantum of energy, a photon, by a visual pigment molecule, rhodopsin. As the function of photon absorption is to convert the visual pigment molecule into a G-protein activating state, the structural details of the visual pigments must be explained from the perspective of their role in activating their specific G-proteins. Thus, Chapters 1-3 of this Handbook extensively cover the physico-chemical molecular characteristics of the vertebrate rhodopsins. Following photoconversion and G-protein activation, the phototransduction cascade leads to modifications of the population of closed and open ion channels in the photoreceptor plasma membrane, and thereby to the electrical response. The nature of the channels of vertebrate photoreceptors is examined in Chapter 4, and Chapter 5 integrates the present body of knowledge of the activation steps in the cascade into a quantitative framework. Once the phototransduction cascade is activated, it must be subsequently silenced. The various molecular mechanisms participating in inactivation are treated in Chapters 1-4 and especially Chapter 5. Molecular biology is now an indispensable tool in signal transduction studies. Numerous vertebrate (Chapter 6) and invertebrate (Chapter 7) visual pigments have been characterized and cloned. The genetics and evolutionary aspects of this great subfamily of G-protein activating receptors are intriguing as they present a natural probe for the intimate relationship between structure and function of the visual pigments. Understanding the spectral characteristics from the molecular composition can be expected to

Structural And Functional Relationships In Prokaryotes

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Author: Larry Barton
Publisher: Springer Science & Business Media
ISBN: 9780387271255
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Structural And Functional Relationships In Prokaryotes by Larry Barton


Original Title: Structural And Functional Relationships In Prokaryotes

For several decades, bacteria have served as model systems to describe the life p- cesses of growth and metabolism. In addition, it is well recognized that prokaryotes have contributed greatly to the many advances in the areas of ecology, evolution, and biotechnology. This understanding of microorganisms is based on studies of members from both theBacteria andArchaea domains. With each issue of the various scienti?c publications, new characteristics of prokaryotic cells are being reported and it is - portant to place these insights in the context of the appropriate physiological processes. Structural and Functional Relationships in Prokaryotes describes the fundamental physiological processes for members of the Archaea and Bacteria domains. The - ganization of the book re?ects the emphasis that I have used in my 30 years of teaching a course of bacterial physiology. The philosophy used in the preparation of this book is to focus on the fundamental features of prokaryotic physiology and to use these features as the basis for comparative physiology. Even though diverse phenotypes have evolved from myriad genetic possibilities, these prokaryotes display considerable functional similarity and support the premise that there is a unity of physiology in the prokaryotes. The variations observed in the chemical structures and biochemical p- cesses are important in contributing to the persistence of microbial strains in a speci?c environment.

Microbial Subversion Of Host Cells

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Author: Society for General Microbiology. Symposium
Publisher: Cambridge University Press
ISBN: 9780521829984
Size: 50.33 MB
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Microbial Subversion Of Host Cells by Society for General Microbiology. Symposium


Original Title: Microbial Subversion Of Host Cells

Microbes have co-evolved over time with other organisms to the extent that some are so acquainted with host cell biology that they subvert key cellular processes with unrivalled precision. This volume reviews this exciting new discipline, reflecting the recent explosion of knowledge as well as broader insights into fundamental cellular processes. C. David O'Connor and David Smith cover the salient aspects by using a range of model systems.

Recombinant Protein Production With Prokaryotic And Eukaryotic Cells A Comparative View On Host Physiology

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Author: Otto-Wilhelm Merten
Publisher: Springer Science & Business Media
ISBN: 9780792371373
Size: 72.83 MB
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Recombinant Protein Production With Prokaryotic And Eukaryotic Cells A Comparative View On Host Physiology by Otto-Wilhelm Merten


Original Title: Recombinant Protein Production With Prokaryotic And Eukaryotic Cells A Comparative View On Host Physiology

The general field of fundamental and applied biotechnology becomes increasingly important for the production of biologicals for human and veterinary use, by using prokaryotic and eukaryotic microorganisms. The papers in the present book are refereed articles compiled from oral and poster presentations from the EFB Meeting on Recombinant Protein Production with Prokaryotic and Eukaryotic Cells. A Comparative View on Host Physiology, which was organized in Semmering/A from 5th to 8th October 2000. A special feature of this meeting was the comparison of different classes of host cells, mainly bacteria, yeasts, filamentous fungi, and animal cells, which made obvious that many physiological features of recombinant protein formation, like cell nutrition, stress responses, protein folding and secretion, or genetic stability, follow similar patterns in different expression systems. This comparative aspect is by far the point of most interest because such comparisons are rarely done, and if they are done, their results are most often kept secret by the companies who generated them. Audience: Presently, a comparable book does not exist because the compiling of manuscripts from all fields of biotechnology (prokaryotic as well as eukaryotic, up to animal cell biotechnology) is not done in general. This particularity makes this book very interesting for postgraduate students and professionals in the large field of biotechnology who want to get a more global view on the current state of the expression of recombinant biologicals in different host cell systems, the physiological problems associated with the use of different expression systems, potential approaches to solve such difficulties by metabolic engineering or the use of other host cells, and the cooperation between process development and strain improvement, which is crucial for the optimisation of both the production strain and the process. This book should be in every library of an institution/organization involved in biotechnology.

Textbook Of Drug Design And Discovery Fourth Edition

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Author: Kristian Stromgaard
Publisher: CRC Press
ISBN: 1439882401
Size: 60.30 MB
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Textbook Of Drug Design And Discovery Fourth Edition by Kristian Stromgaard


Original Title: Textbook Of Drug Design And Discovery Fourth Edition

The molecular biological revolution and the mapping of the human genome continue to provide new challenges and opportunities for drug research and design. Future medicinal chemists and drug designers must have a firm background in a number of related scientific disciplines in order to understand the conversion of new insight into lead structures and subsequently into drug candidates. Classroom tested and student approved, Textbook of Drug Design and Discovery, Fourth Edition describes the manner in which medicinal chemists utilize the various fields upon which they draw and the specific strategies they employ to advance promising molecules into clinical use for the treatment of disease. This text integrates a number of related scientific disciplines, including advanced synthetic chemistry, computational chemistry, biochemistry, structural biology, and molecular pharmacology, to provide current and comprehensive information on all aspects of drug design and discovery. Extensively revised, new topics in the fourth edition include: Biostructure-based and ligand-based drug design Chemical biology Natural products Imaging Neurotransmitter transporters Opioid and cannabinoid receptors Hypnotics Neglected diseases Immunomodulating agents Antibiotics The first part of the book covers general aspects, methods, and principles for drug design and discovery, and the second part covers specific targets and diseases. The text contains more than 300 color figures and 24 tables for rapid assimilation. Each chapter includes references for further study. Most chapters also provide the background and history needed to provide a context for students, as well as conclusions that summarize the points most relevant to emerging areas of research in drug design.

Introductory Biophysics

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Author: J. R. Claycomb
Publisher: Jones & Bartlett Learning
ISBN: 0763779989
Size: 37.36 MB
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Introductory Biophysics by J. R. Claycomb


Original Title: Introductory Biophysics

Designed for biology, physics, and medical students, Introductory Biophysics: Perspectives on the Living State, provides a comprehensive overview of the complex subject of biological physics. The companion CD-ROM (eBook version does not include the CD-ROM), with MATLAB examples and the student version of QuickFieldTM, allows the student to perform biophysical simulations and modify the textbook example files. Included in the text are computer simulations of thermodynamics, astrobiology, the response of living cells to external fields, chaos in population dynamics, numerical models of evolution, electrical circuit models of cell suspension, gap junctions, and neuronal action potentials. With this text students will be able to perform biophysical simulations within hours. MATLAB examples include; the Hodgkin Huxley equations; the FitzHugh-Nagumo model of action potentials; fractal structures in biology; chaos in population dynamics; the cellular automaton model (the game of life); pattern formation in reaction-diffusion systems. QuickFieldTM tutorials and examples include; calculation of currents in biological tissue; cells under electrical stimulation; induced membrane potentials; heat transfer and analysis of stress in biomaterials.

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