The Bacterial Flagellum


Book Description

This volume examines the structure and dynamics of the bacterial flagellum using bacterial genetics, molecular biology, biochemistry, structural biology, biophysics, cell biology, and molecular dynamics simulation. The chapters are divided into 4 parts: Part I describes flagellar type III protein exports, assembly, and gene regulation in S. enterica; Part II explains how to isolate the flagella from the bacterial cell bodies, and further explains how to conduct high-resolution structural and functional analyses of the flagellar motor; Part III talks about how to measure flagellar motor rotation over a wide range of external load, how to measure ion motive force across the cytoplasmic membrane, and how to measure dynamic properties of the flagellar motor proteins by fluorescence microscopy with single molecule precision; and Part IV explores the structure and function of Spirochetal, Vibrio, Shewanella, and Magnetococcus flagellar motors. Written in the highly successful Methods in Molecular Biology series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls. Cutting-edge and comprehensive, The Bacterial Flagellum: Methods and Protocols aims to provide valuable and vital research to aid in the investigation of the bacterial flagellum resulting from various bacterial species.




The Bacterial Flagellum


Book Description

This volume examines the structure and dynamics of the bacterial flagellum using bacterial genetics, molecular biology, biochemistry, structural biology, biophysics, cell biology, and molecular dynamics simulation. The chapters are divided into 4 parts: Part I describes flagellar type III protein exports, assembly, and gene regulation in S. enterica; Part II explains how to isolate the flagella from the bacterial cell bodies, and further explains how to conduct high-resolution structural and functional analyses of the flagellar motor; Part III talks about how to measure flagellar motor rotation over a wide range of external load, how to measure ion motive force across the cytoplasmic membrane, and how to measure dynamic properties of the flagellar motor proteins by fluorescence microscopy with single molecule precision; and Part IV explores the structure and function of Spirochetal, Vibrio, Shewanella, and Magnetococcus flagellar motors. Written in the highly successful Methods in Molecular Biology series format, chapters include introductions to their respective topics, lists of the necessary materials and reagents, step-by-step, readily reproducible laboratory protocols, and tips on troubleshooting and avoiding known pitfalls. Cutting-edge and comprehensive, The Bacterial Flagellum: Methods and Protocols aims to provide valuable and vital research to aid in the investigation of the bacterial flagellum resulting from various bacterial species.




Perspectives on Bacterial Flagellar Motor


Book Description

The bacterial flagellum is a supramolecular motility machinery consisting of the basal body acting as a rotary motor, the hook as a universal joint and the filament as a helical propeller. The bacterial flagellar motor composed of a rotor ring and a dozen stators is powered by an electrochemical-potential difference of specific ions across the cytoplasmic membrane and rotates in either the counterclockwise (CCW) or clockwise (CW) direction. A sensory signal transduction pathway regulates the switching between the CCW and CW states of the motor in response to environmental stimuli, allowing bacterial cells to migrate more desirable environments for their survival. The core structure of the bacterial flagellum is conserved among bacterial species. However, recent structural analyses of intact flagellar structures derived from various bacterial species by electron cryotomography and subtomogram averaging have shown that novel and divergent structures surround the core structure, suggesting that the flagellar motors have adapted to function in various environments of the habitat of bacteria. This Special Issue of Biomolecules covers recent advances in our understanding of and perspectives on the flagellar motor derived from different bacterial species.




Behaviour of Micro-organisms


Book Description

Organisms are constantly being bombarded by stimuli in their envi ronment (and also by internal stimuli), and a common way of responding is by movement. This is an aspect of irritability, or excitability, or behaviour. Response to stimuli by movement is found in all organisms: it represents one of the universalities of biology. Yet at the molecular level it is one of the least understood of biological phenomena. Micro-organisms are no exception. If motile, they respond to stimuli by active movement (taxis); if sessile, they respond by growth movements (tropisms). Responses by movement are known among micro-organisms to such stimuli as chemicals, electric current, gravity, light, temperature, touch, and vibrations. The behaviour of micro-organisms is an exciting subject, first of all for its own sake, but in addition because it may reveal facts and concepts that are applicable to understanding behaviour in more complicated organisms (even us) and because it may, help to understand the movement of cells and tissues during differentiation and development of higher plants and animals.




Bacterial Cell Wall


Book Description

Studies of the bacterial cell wall emerged as a new field of research in the early 1950s, and has flourished in a multitude of directions. This excellent book provides an integrated collection of contributions forming a fundamental reference for researchers and of general use to teachers, advanced students in the life sciences, and all scientists in bacterial cell wall research. Chapters include topics such as: Peptidoglycan, an essential constituent of bacterial endospores; Teichoic and teichuronic acids, lipoteichoic acids, lipoglycans, neural complex polysaccharides and several specialized proteins are frequently unique wall-associated components of Gram-positive bacteria; Bacterial cells evolving signal transduction pathways; Underlying mechanisms of bacterial resistance to antibiotics.




The Flagellar World


Book Description

The Flagellar World is a unique publication. The product of years of research and data collection by the author, this book is a pictorial guide to flagella in a variety of organisms. Each EM image is accompanied by a short description of the system in each organism. These never-before-seen pictures represent a wide variety of flagella, including Legionella pneumophila, Escherichia coli, Pseudomonas aeruginosa, and many others. Researchers in microbiology, immunology, and parasitology will find this a fascinating and useful resource. - A unique publication with many never before seen EM images of flagella - A historical document of years of research on flagella - Fills a specific niche that shows flagella in several varied organisms




Pseudomonas


Book Description

Pseudomonas comprises three volumes covering the biology of pseudomonads in a wide context, including the niches they inhabit, the taxonomic relations among members of this group, the molecular biology of gene expression in different niches and under different environmental conditions, the analysis of virulence traits in plants, animals and human pathogens as well as the determinants that make some strains useful for biotechnological applications and promotion of plant growth. There has been growing interest in pseudomonads and a particular urge to understand the biology underlying the complex metabolism of these ubiquitous microbes. These bacteria are capable of colonizing a wide range of niches, including the soil, the plant rhizosphere and phylosphere, and animal tissues; more recently they have attracted attention because of their capacity to form biofilms, a characteristic with potentially important medical and environmental implications. The three volumes cover the following topics: - Taxonomy, - Genomics, - Life styles, - Cell Architecture, - Virulence, - Regulation, - Macromolecules, - Alternative Respiratory Substrates, - Catabolism and Biotransformations. Pseudomonas will be of use to all researchers working on these bacteria, particularly those studying microbiology, plant crops, pathogenesis, and chemical engineering. Advanced students in biology, medicine and agronomy will also find these three volumes a valuable reference during their studies.




Physical Microbiology


Book Description

This book emerges from the idea that specific physics-inspired approaches are necessary to understand different stage of bacterial physiology and the infections they cause. Many aspects of bacterial life depend on processes typically described by physical laws: The rheology of biofilms is determined by complex cohesive forces. Physical laws of diffusion are essential to all processes of bacterial metabolism. The formation of the numerous bacterial biomacromolecules require complex self-organization processes and their function are powered by potent molecular motors. Host-pathogen interactions during infection frequently occur in environments determined by fluid mechanics. In this book, different chapters represent research at the interface between microbiology and physics. Topics range from intracellular organization to cell-cell interactions. A good part of the book is devoted to mechanical forces, which are involved in the function of elaborate bacterial nanomachines, chromosome segregation, and cell division. The effect of bacterial toxins provides an example of the alteration of cellular membrane properties by bacteria. Symmetrically, histones from mammalian cells alter bacterial membranes as a defense mechanism during infection. The editors of this book, Guillaume Duménil and Sven van Teeffelen, have selected researchers at the forefront of research in physical microbiology to provide the most recent view in this fast-moving field. The contents of this book are designed to be accessible for scientists with training in biology and for scientists with training in physics. The objective is to provide a fresh perspective on microbiology and infection by highlighting recent multidisciplinary research and favor rapid advances at this fruitful interface.




Pili and Flagella


Book Description

This book, the first for many years on this important topic, brings together some of the top scientists in the field and describes the current knowledge and latest research on prokaryotic pili and flagella. The emphasis of the chapters is on the molecular




Atlas of Oral Microbiology: From Healthy Microflora to Disease


Book Description

This book is the second edition of Atlas of Oral Microbiology: From Healthy Microflora to Disease (ISBN 978-0-12-802234-4), with two new features: we add about 60 pictures of 14 newly isolated microbes from human dental plaque, at the same time, we re-organize the content of this book and provide more research progress about the oral microbiome bank of China, the invasion of oral microbiota into the gut, and the relationships between Oral Microflora and Human Diseases. This book is keeping up with the advanced edge of the international research field of oral microbiology. It innovatively gives us a complete description of the oral microbial systems according to different oral ecosystems. It collects a large number of oral microbial pictures, including cultural pictures, colonies photos, and electron microscopy photos. It is by far the most abundant oral microbiology atlas consists of the largest number of pictures. In the meantime, it also described in detail a variety of experimental techniques, including microbiological isolation, culture, and identification. It is an atlas with strong practical function. The editors and writers of this book have long been engaged in teaching and research work in oral microbiology and oral microecology. This book deserves a broad audience, and it will meet the needs of researchers, clinicians, teachers, and students major in biology, dental medicine, basic medicine, or clinical medicine. It can also be used to facilitate teaching and international academic exchanges.