Molecular Chaperones and Cell Signalling

Author: Brian Henderson
Publisher: Cambridge University Press
ISBN: 9781139444019
Format: PDF, Docs
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Originally published in 2005, this book reviews understanding of the biological roles of extracellular molecular chaperones. It provides an overview of the structure and function of molecular chaperones, their role in the cellular response to stress and their disposition within the cell. It also questions the basic paradigm of molecular chaperone biology - that these proteins are first and foremost protein-folding molecules. Paradigms of protein secretion are reviewed and the evolving concept of proteins (such as molecular chaperones) as multi-functional molecules for which the term 'moonlighting proteins' has been introduced is discussed. The role of exogenous molecular chaperones as cell regulators is examined and the physiological and pathophysiological role that molecular chaperones play is described. In the final section, the potential therapeutic use of molecular chaperones is described and the final chapter asks the question - what does the future hold for the extracellular biology of molecular chaperones?

Molecular Chaperones in Health and Disease

Author: Matthias Gaestel
Publisher: Springer Science & Business Media
ISBN: 3540297170
Format: PDF
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Molecular chaperones are involved in a wide variety of essential cellular processes in living cells. A subset of molecular chaperones have been initially described as heat shock proteins protecting cells from stress damage by keeping cellular proteins in a folding competent state and preventing them from irreversible aggregation. Later it became obvious that molecular chaperones are also expressed constitutively in the cell and are involved in complex processes such as protein synthesis, intracellular protein transport, post-translational modification and secretion of proteins as well as receptor signalling. Hence, it is not surprising that molecular chaperones are implicated in the pathogenesis of many relevant diseases and could be regarded as potential pharmacological targets. Starting with the analysis of the mode of action of chaperones at the molecular, cellular and organismic level, this book will then describe specific aspects where modulation of chaperone action could be of pharmacological and therapeutic interest.

The Biology of Extracellular Molecular Chaperones

Author: Novartis Foundation
Publisher: John Wiley & Sons
ISBN: 9780470754023
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The heat shock, or cell stress, response was first identified in the polytene chromosomes of Drosophila. This was later related to the appearance of novel proteins within stressed cells, and the key signal stimulating this appearance was identified as the presence of unfolded proteins within the cell. It is now known that this is a key mechanism enabling cells to survive a multitude of physical, chemical and biological stresses. Since the promulgation of the ‘molecular chaperone’ concept as a general cellular function to control the process of correct protein folding, a large number of molecular chaperones and protein folding catalysts have been identified, and it has been recognized that not all molecular chaperones are stress proteins and vice versa. The discovery of molecular chaperones as folding proteins went hand-in-hand with their recognition as potent immunogens in microbial infection. It was subsequently shown that administration of molecular chaperones such as Hsp60, Hsp70 or Hsp90 could inhibit experimental autoimmune diseases and cancer. More recently evidence has accumulated to show that certain molecular chaperones are also present on the surface of cells or in extracellular fluids. A new paradigm is emerging: at least some molecular chaperones are secreted proteins with pro- or anti-inflammatory actions, regulating the immune response in human diseases such as coronary heart disease, diabetes and rheumatoid arthritis. In addition to having direct effects on cells, molecular chaperones can bind peptides and present them to T cells to modulate immune responses. This may be significant in the treatment of cancer. This is the first book bringing leading researchers in this field together to review and discuss: our current knowledge of cell stress response and molecular chaperones the changing paradigms of protein trafficking and function cell stress proteins as immunomodulators and pro- and anti-inflammatory signalling molecules the role of these proteins in various chronic diseases and their potential as preventative or therapeutic agents. The Biology of Extracellular Molecular Chaperones is of particular interest to immunologists, cell and molecular biologists, microbiologists and virologists, as well as clinical researchers working in cardiology, diabetes, rheumatoid arthritis and other inflammatory diseases.

Molecular Chaperones in Health and Disease

Author: Matthias Gaestel
Publisher: Springer Science & Business Media
ISBN: 3540297170
Format: PDF, Docs
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Molecular chaperones are involved in a wide variety of essential cellular processes in living cells. A subset of molecular chaperones have been initially described as heat shock proteins protecting cells from stress damage by keeping cellular proteins in a folding competent state and preventing them from irreversible aggregation. Later it became obvious that molecular chaperones are also expressed constitutively in the cell and are involved in complex processes such as protein synthesis, intracellular protein transport, post-translational modification and secretion of proteins as well as receptor signalling. Hence, it is not surprising that molecular chaperones are implicated in the pathogenesis of many relevant diseases and could be regarded as potential pharmacological targets. Starting with the analysis of the mode of action of chaperones at the molecular, cellular and organismic level, this book will then describe specific aspects where modulation of chaperone action could be of pharmacological and therapeutic interest.

Cell Surface GRP78 a New Paradigm in Signal Transduction Biology

Author: Salvatore V. Pizzo
Publisher: Academic Press
ISBN: 0128123524
Format: PDF, Mobi
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Cell Surface GRP78, a New Paradigm in Signal Transduction Biology presents a new paradigm that has emerged in the past decade with the discovery that various intracellular proteins may acquire new functions as cell surface receptors. Two very prominent examples are ATP synthase and GRP78. While the role of cell surface ATP synthase has been reviewed in various books, this book directs its attention to the story of cell surface GRP78. Edited by the researcher who identified cell surface expression of the molecular chaperone GRP78 as a major factor in prostate cancer and other malignancies Presents an in-depth treatment of the biological underpinnings of GRP78 and its connection to disease Provides four-color illustrations that facilitate the narrative

Cellular Signal Processing

Author: Friedrich Marks
Publisher: Garland Science
ISBN: 1351677225
Format: PDF, Docs
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Cellular Signal Processing offers a unifying view of cell signaling based on the concept that protein interactions act as sophisticated data processing networks that govern intracellular and extracellular communication. It is intended for use in signal transduction courses for undergraduate and graduate students working in biology, biochemistry, bioinformatics, and pharmacology, as well as medical students. The text is organized by three key topics central to signal transduction: the protein network, its energy supply, and its evolution. It covers all important aspects of cell signaling, ranging from prokaryotic signal transduction to neuronal signaling, and also highlights the clinical aspects of cell signaling in health and disease. This new edition includes expanded coverage of prokaryotes, as well as content on new developments in systems biology, epigenetics, redox signaling, and small, non-coding RNA signaling.

Handbook of Cell Signaling Three Volume Set

Author: Ralph A. Bradshaw
Publisher: Academic Press
ISBN: 0080533574
Format: PDF, ePub, Docs
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The Handbook of Cell Signaling is a comprehensive work covering all aspects of intracellular signal processing, including extra/intracellular membrane receptors, signal transduction, gene expression/translation, and cellular/organotypic signal responses. The subject matter has been divided into five main parts (each of which is headed by a recognized expert in the field): * Initiation: Extracellular and Membrane Events * Transmission: Effectors and Cytosolic Events * Nuclear Responses: Gene Expression and Translation * Events in Intracellular Compartments * Cell-Cell and Cell-Matrix Interactions Covered in extensive detail, these areas will appeal to a broad, cross-disciplinary audience interested in the structure, biochemistry, molecular biology and pathology of cellular effectors. Tabular and well-illustrated, the Handbook will serve as an in-depth reference for this complex and evolving field. Tabular and well illustrated, the Handbook will serve as an in-depth reference for this complex and evolving field! * Contains approximately 470 articles * Provides well-organized sections on each essential area in signaling * Includes discussion on everything from ligand/receptor interactions to organ/organism responses * Extremely user-friendly

Molecular Chaperones

Author: Sophie Jackson
Publisher: Springer
ISBN: 3642345522
Format: PDF, ePub
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Assisting Oxidative Protein Folding: How Do Protein Disulphide-Isomerases Couple Conformational and Chemical Processes in Protein Folding?, by A. Katrine Wallis and Robert B. Freedman Peptide Bond cis/trans Isomerases: A Biocatalysis Perspective of Conformational Dynamics in Proteins, by Cordelia Schiene-Fischer, Tobias Aumüller and Gunter Fischer Small Heat-Shock Proteins: Paramedics of the Cell, by Gillian R. Hilton, Hadi Lioe, Florian Stengel, Andrew J. Baldwin und Justin L. P. Benesch Allostery in the Hsp70 Chaperone Proteins, by Erik R. P. Zuiderweg, Eric B. Bertelsen, Aikaterini Rousaki, Matthias P. Mayer, Jason E. Gestwicki and Atta Ahmad Hsp90: Structure and Function, by Sophie E. Jackson Extracellular Chaperones, by Rebecca A. Dabbs, Amy R. Wyatt, Justin J. Yerbury, Heath Ecroyd and Mark R. Wilson

Cellular Trafficking of Cell Stress Proteins in Health and Disease

Author: Brian Henderson
Publisher: Springer Science & Business Media
ISBN: 9400747403
Format: PDF
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Since the beginning of the 21st Century there has been a rapid increase in our understanding of the cellular trafficking mechanisms of molecular chaperones in eukaryotes and in prokaryotes. In the former, molecular chaperone trafficking can occur between the various cellular compartments, with concomitant movement of other proteins. Such events can also result in the release of molecular chaperones from cells. In bacteria, molecular chaperones are involved in the trafficking of other proteins and are themselves released into the external milieu. The increasing appreciation of the role of molecular chaperones and Protein-Folding Catalysts in the interplay between bacteria and the cells of their hosts is now an important area of research for understanding the mechanisms of infectious diseases. This volume brings together experts in the biochemistry, cellular biology, immunology and molecular biology of molecular chaperones and Protein-Folding Catalysts with a focus on the mechanisms of cellular trafficking of these proteins and the role of these variegated trafficking mechanisms in both human and animal health and disease.

Molecular Chaperones in the Cell

Author: Peter A. Lund
Publisher: Oxford University Press, USA
ISBN: 9780199638673
Format: PDF, ePub, Mobi
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Interest in molecular chaperones has grown exponentially over the last decade. Molecular Chaperones recognise nascet and unfolded polypeptide chains and are often essential for their folding, proteolytic processing, intracellular targeting, and secretion. They are vital for cell growth, with key roles in processes as diverse as signal transduction and stress survival. Much work has already been done in understanding the structure and function of the major molecular chaperones, and more recently the emphasis in research has shifted towrd exploring their precise roles in many different processes with which they are involved inside the cell. This aspect of molecular chaperone biology is the focus of this book. Here, the field's leading experts synthesise our body of knowledge into succinct chapters, and the reader gains not only a fuller understanding of the roles of chaperones in the context of cellular processes, but also an insight into the nature of these proteins and their breath of definition. This book represents an invaluable summary of the state of research in this fast moving highly important branch of molecular biology, which has ramifications for understanding not only many diverse cellular processes, but also give important insights into diseases such as BSE, CJD, and Alzhemier's disease, which invole protein misfolding.