Download or read book Pore forming Peptides and Protein Toxins written by Gianfranco Menestrina and published by CRC Press. This book was released on 2003-01-30 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pore-forming proteins and peptides play a central role in bacterial pathogenesis, the immune response, defense from venomous attack, and innate immunity. These proteins attack and eliminate other organisms by punching an aqueous channel through their membranes, which disrupts appropriate cell function. The discovery of this cellular interaction has
Download or read book Proteins written by Gregor Anderluh and published by Springer Science & Business Media. This book was released on 2011-01-11 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt: Formation of transmembrane pores is a very effective way of killing cells. It is thus not surprising that many bacterial and eukaryotic toxic agents are pore-forming proteins. Pore formation in a target membrane is a complex process composed of several steps; proteins need to attach to the lipid membrane, possibly aggregate in the plane of the membrane and finally form a pore by inserting part of the polypeptide chain across the lipid bilayer. Structural information about toxins at each stage is indispensible for the biochemical and molecular biological studies that aim to - derstand how pores are formed at the molecular level. There are currently only two Staphylococcus aureus and hemolysin E from Escherichia coli. Therefore, what we know about these proteins was obtained over many years of intense experimentation. We have nevertheless, in the last couple of years, witnessed a significant rise in structural information on the soluble forms of pore-forming proteins. Surprisingly, many unexpected similarities with other proteins were noted, despite extremely low or insignificant sequence similarity. It appears that lipid membrane binding and formation of transmembrane channels is achieved in many cases by a limited repertoire of structures. This book describes how several of the important pore forming toxin families achieve membrane bi- ing and which structural elements are used for formation of transmembrane pores. Our contributors have thus provided the means for a comparative analysis of several unrelated families.
Download or read book Pore Forming Toxins written by and published by Academic Press. This book was released on 2021-03-10 with total page 674 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pore Forming Toxins, Volume 649 in the Methods in Enzymology series continues the legacy of this premier serial with quality chapters authored by field leaders. Chapters in this new release include X-ray crystallography shines a light on pore-forming toxins, Giant unilamellar vesicles for studying activity of pore forming proteins, Combined applications of fluorescence spectroscopy and molecular dynamics simulations in studies of Diphtheria Toxin translocation domain, Biophysical approaches to study actinoporin-lipid interactions, Molecular basis for activation of Actinoporins by lipids, Engineered ClyA for detection of biological molecules, Pore-forming Toxins for the Size-Discrimination of Polymers and Biopolymers: Towards Biomolecules Sequencing, and much more. - Provides the authority and expertise of leading contributors from an international board of authors - Presents the latest release in the Methods in Enzymology series
Download or read book The Comprehensive Sourcebook of Bacterial Protein Toxins written by Joseph E. Alouf and published by Elsevier. This book was released on 2005-12-20 with total page 1072 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the major achievements and discoveries relevant to bacterial protein toxins since the turn of the new century illustrated by the discovery of more than fifty novel toxins (many of them identified through genome screening). The establishment of the three-dimensional crystal structure of more than 20 toxins during the same period offers deeper knowledge of structure-activity relationships and provides a framework to understand how toxins recognize receptors, penetrate membranes and interact with and modify intracellular substrates. - Edited by two of the most highly regarded experts in the field from the Institut Pasteur, France - 14 brand new chapters dedicated to coverage of historical and general aspects of toxinology - Includes the major toxins of both basic and clinical interest are described in depth - Details applied aspects of toxins such as therapy, vaccinology, and toolkits in cell biology - Evolutionary and functional aspects of bacterial toxins evaluated and summarized - Toxin applications in cell biology presented - Therapy (cancer therapy, dystonias) discussed - Vaccines (native and genetically engineered vaccines) featured - Toxins discussed as biological weapons, comprising chapters on anthrax, diphtheria, ricin etc.
Download or read book Comprehensive Biophysics written by and published by Academic Press. This book was released on 2012-04-12 with total page 3533 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biophysics is a rapidly-evolving interdisciplinary science that applies theories and methods of the physical sciences to questions of biology. Biophysics encompasses many disciplines, including physics, chemistry, mathematics, biology, biochemistry, medicine, pharmacology, physiology, and neuroscience, and it is essential that scientists working in these varied fields are able to understand each other's research. Comprehensive Biophysics, Nine Volume Set will help bridge that communication gap. Written by a team of researchers at the forefront of their respective fields, under the guidance of Chief Editor Edward Egelman, Comprehensive Biophysics, Nine Volume Set provides definitive introductions to a broad array of topics, uniting different areas of biophysics research - from the physical techniques for studying macromolecular structure to protein folding, muscle and molecular motors, cell biophysics, bioenergetics and more. The result is this comprehensive scientific resource - a valuable tool both for helping researchers come to grips quickly with material from related biophysics fields outside their areas of expertise, and for reinforcing their existing knowledge. Biophysical research today encompasses many areas of biology. These studies do not necessarily share a unique identifying factor. This work unites the different areas of research and allows users, regardless of their background, to navigate through the most essential concepts with ease, saving them time and vastly improving their understanding The field of biophysics counts several journals that are directly and indirectly concerned with the field. There is no reference work that encompasses the entire field and unites the different areas of research through deep foundational reviews. Comprehensive Biophysics fills this vacuum, being a definitive work on biophysics. It will help users apply context to the diverse journal literature offering, and aid them in identifying areas for further research Chief Editor Edward Egelman (E-I-C, Biophysical Journal) has assembled an impressive, world-class team of Volume Editors and Contributing Authors. Each chapter has been painstakingly reviewed and checked for consistent high quality. The result is an authoritative overview which ties the literature together and provides the user with a reliable background information and citation resource
Download or read book Bacterial Protein Toxins written by Drusilla L. Burns and published by . This book was released on 2003 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: Table of contents http://www.loc.gov/catdir/toc/fy037/2002152890.html.
Download or read book Bacterial Exotoxins How Bacteria Fight the Immune System written by Inka Sastalla and published by Frontiers Media SA. This book was released on 2016-10-07 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bacterial pathogenicity factors are functionally diverse. They may facilitate the adhesion and colonization of bacteria, influence the host immune response, assist spreading of the bacterium by e.g. evading recognition by immune cells, or allow bacteria to dwell within protected niches inside the eukaryotic cell. Exotoxins can be single polypeptides or heteromeric protein complexes that act on different parts of the cells. At the cell surface, they may insert into the membrane to cause damage; bind to receptors to initiate their uptake; or facilitate the interaction with other cell types. For example, bacterial superantigens specifically bind to major histocompatibility complex (MHC) II molecules on the surface of antigen presenting cells and the T cell receptor, while cytolysins cause pore formation. For intracellular activity, exotoxins need to be translocated across the eukaryotic membrane. Gram-negative bacteria can directly inject effector proteins in a receptor-independent manner by use of specialized needle apparatus such as bacterial type II, III, or type IV secretion systems. Other methods of translocation include the phagocytic uptake of bacteria followed by toxin secretion, or receptor-mediated endocytosis which allows the targeting of distinct cell types. Receptor-based uptake is initiated by the binding of heteromeric toxin complexes to the cell surface and completed by the translocation of the effector protein(s) across the endosomal membrane. In the cytosol, toxins interact with specific eukaryotic target proteins to cause post-translational modifications that often result in the manipulation of cellular signalling cascades and inflammatory responses. It has become evident that the actions of some bacterial toxins may exceed their originally assumed cytotoxic function. For example, pore-forming toxins do not only cause cytolysis, but may also induce autophagy, pyroptosis, or activation of the MAPK pathways, resulting in adjustment of the host immune response to infection and modification of inflammatory responses both locally and systemically. Other recently elucidated examples of the immunomodulatory function of cell death-inducing exotoxins include TcdB of Clostridium difficile which activates the inflammasome through modification of cellular Rho GTPases, or the Staphyloccocus d-toxin which activates mast cells. The goal of this research topic was to gather current knowledge on the interaction of bacterial exotoxins and effector proteins with the host immune system. The following 16 research and review articles in this special issue describe mechanisms of immune modification and evasion and provide an overview over the complexity of bacterial toxin interaction with different cells of the immune system.
Download or read book Nematode Models of Development and Disease written by and published by Academic Press. This book was released on 2021-05-13 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nematode Models of Development and Disease, Volume 144 in the Current Topics in Developmental Biology series highlights new advances in the field, with this new volume presenting interesting chapters surrounding Transgenerational inheritance, Oscillatory expression and function, Concepts and functions of small RNA pathways in C. elegans, Exploring the nuclear lamina in health and pathology using C. elegans, Cellular Plasticity, Morphogenesis, Tubulogenesis, Organogenesis forces, Programmed cell fusion in development and homeostasis, One template, two outcomes: how does the sex-shared nervous system generate sex-specific behaviors?, Metabolic Cellular Coordination of Gene-Environment Interactions, and much more. Other chapters cover Chemical and physical cues and micro-evolution in early embryogenesis, Innate immunity, Sex and Death, Dendrites maturation, axonal growth and extracellular glycoproteins, Autophagocytosis, Spermatogenesis, and the developmental and physiological roles of phagocytosis in Caenorhabditis elegans. - Provides the authority and expertise of leading contributors from an international board of authors - Presents the latest release in the Current Topics in Developmental Biology
Download or read book MACPF CDC Proteins Agents of Defence Attack and Invasion written by Gregor Anderluh and published by Springer. This book was released on 2014-05-05 with total page 329 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focusses on evolutionary, structural and functional aspects of pore-forming proteins, bringing together prominent researchers in the fields of structural biology and cellular and biophysical techniques. The focus is on the MACPF/CDC protein super family that was originally discovered because of unexpected structural similarity between a domain present in bacterial cholesterol-dependent cytolysins (CDC) and proteins of the membrane attack complex/perforin (MACPF) family. Members of the MACPF/CDC super family are crucial for many biological processes, being efficient agents of development, defence, attack and invasion of cells and tissues. However, their best-known role is in bacterial pathogenesis and the proper functioning of the vertebrate immune system, via formation of transmembrane pores in target cell membranes. The book contains chapters on the distribution of MACPF/CDC proteins and on aspects of their evolution and structural properties, the similarities between different super family members and functional properties of some of the best known examples. The book also contains an overview of biophysical approaches that may be used in the future to provide further insights into how these interesting proteins function.
Download or read book Bacterial Protein Toxins written by K. Aktories and published by Springer Science & Business Media. This book was released on 2013-03-14 with total page 713 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years remarkable progress has been accomplished with respect to our knowledge about bacterial protein toxins. This refers especially to structural aspects of protein toxins but also holds true for genetics, molecular biology and biochemical mechanisms underlying the action of toxins. This volume covers the very current and exciting aspects of up-to-date bacterial toxicology and comprehensively reviews the most important bacterial protein toxins such as the intracellular acting toxins which exhibit enzyme activity, as well as those toxins that interact with cell plasma membranes by damaging the membranes (pore formation) or stimulating cell receptors (superantigens). This is the most current reference work on these important bacterial protein toxins, which are presented from the point of view of different disciplines such as pharmacology, microbiology, cell biology and protein chemistry.
Download or read book Molecular Biology of the Cell written by 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 Lipid Protein Interactions written by Jörg H. Kleinschmidt and published by Humana Press. This book was released on 2013-02-14 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biological membranes are the essential structuring elements of all living cells. Many enzymatic reactions take place at the membrane-water interface. To gain detailed insight into membrane properties, it is therefore of great importance to understand the complex nature of the interactions of membrane proteins with lipids. Lipid-Protein Interactions: Methods and Protocols provides a selection of protocols to examine protein-lipid interactions, membrane and membrane protein structure, how membrane proteins affect lipids and how they are in turn affected by the lipid bilayer and lipid properties. The methods described here are all actively used, complementary, and necessary to obtain comprehensive information about membrane structure and function. They include label-free approaches, imaging techniques and spectroscopic methodologies. Written in the successful Methods in Molecular BiologyTM series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible protocols, and notes on troubleshooting and avoiding known pitfalls. Authoritative and easily accessible, Lipid-Protein Interactions: Methods and Protocols seeks to serve both professional and novices with its wide range of the methods frequently used in this area of research.
Download or read book From Peptide and Protein Toxins to Ion Channel Structure Function and Drug Design written by Victor I. Tsetlin and published by Frontiers Media SA. This book was released on 2020-12-09 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.
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 Handbook of Marine Natural Products written by Ernesto Fattorusso and published by Springer. This book was released on 2012-04-21 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Handbook of Marine Natural Products" takes a fresh approach to describing the major themes of research in this rapidly developing field. This two volume reference work begins with a section that provides a taxonomic survey of the secondary metabolites of diverse marine life including microbes, algae, and invertebrates. This is followed by a demonstration of the techniques and strategies employed in modern structure elucidation of complex natural products. The natural roles of marine natural products are then explored in a series of focused chapters which include the topics of symbiosis, anti-predation and antifouling, chemical interactions, and defence against UV stress. Various routes which facilitate the understanding of marine natural product biosynthesis are subsequently explained and these are followed by an extensive set of chapters on the biomedical potential of marine natural products. The latter portion of this section considers the technologies and scientific disciplines necessary for advancing bioactive marine natural product lead compounds into actual pharmaceuticals. The reference work finishes with a selection of chapters describing marine toxins and their impact on public health and seafood resources. Final thoughts presented at the end of the second volume focus on the future of this field of investigation and discovery research. This publication is presented as a reference handbook and general concepts are emphasized and illustrated with numerous interesting examples, graphical information, and a comprehensive index. "Handbook of Marine Natural Products" introduces students who are at advanced undergraduate and entry graduate student levels to this fascinating multidisciplinary field. It is an ideal desk companion for courses focusing on this contemporary area.
Download or read book Crystallographic Studies of Pore forming Protein Toxins written by Susanne C. Feil and published by . This book was released on 2002 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
