Characterization of the Cell Division Proteins, MreC and DivIVA of Bacillus Subtilis PDF Download
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Author: Joong-Chul Lee
Publisher:
ISBN:
Category :
Languages : en
Pages : 456
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Author: Joong-Chul Lee
Publisher:
ISBN:
Category :
Languages : en
Pages : 456
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Author: Steven James Biller
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Dividing cells must ensure that their DNA is accurately replicated and that both copies of the chromosome are faithfully segregated into the new daughter cells before cell division completes. Here, I describe the identification and characterization of mechanisms that contribute to the coordination of cell division with DNA replication in the Gram-positive soil bacterium Bacillus subtilis. I developed a genetic screen to isolate mutations that increase the frequency with which B. subtilis cells erroneously divide over their chromosome when DNA replication is perturbed. Seventeen mutations were isolated in genes involved in a range of cellular processes including DNA repair, chromosome organization, cell wall structure, and central carbon metabolism. Six mutations affecting cell cycle coordination in B. subtilis were characterized, including detailed studies of the mechanism by which the DNA translocase SftA promotes chromosome separation at nascent division septa. I also investigated the role of YycJ, a putative metallo-beta-lactamase, in regulating cell division.
Author: Phoebe Coral Peters
Publisher:
ISBN:
Category : Bacillus subtilis
Languages : en
Pages : 313
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Author: Jan Löwe
Publisher: Springer
ISBN: 331953047X
Category : Science
Languages : en
Pages : 457
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Book Description
This book describes the structures and functions of active protein filaments, found in bacteria and archaea, and now known to perform crucial roles in cell division and intra-cellular motility, as well as being essential for controlling cell shape and growth. These roles are possible because the cytoskeletal and cytomotive filaments provide long range order from small subunits. Studies of these filaments are therefore of central importance to understanding prokaryotic cell biology. The wide variation in subunit and polymer structure and its relationship with the range of functions also provide important insights into cell evolution, including the emergence of eukaryotic cells. Individual chapters, written by leading researchers, review the great advances made in the past 20-25 years, and still ongoing, to discover the architectures, dynamics and roles of filaments found in relevant model organisms. Others describe one of the families of dynamic filaments found in many species. The most common types of filament are deeply related to eukaryotic cytoskeletal proteins, notably actin and tubulin that polymerise and depolymerise under the control of nucleotide hydrolysis. Related systems are found to perform a variety of roles, depending on the organisms. Surprisingly, prokaryotes all lack the molecular motors associated with eukaryotic F-actin and microtubules. Archaea, but not bacteria, also have active filaments related to the eukaryotic ESCRT system. Non-dynamic fibres, including intermediate filament-like structures, are known to occur in some bacteria.. Details of known filament structures are discussed and related to what has been established about their molecular mechanisms, including current controversies. The final chapter covers the use of some of these dynamic filaments in Systems Biology research. The level of information in all chapters is suitable both for active researchers and for advanced students in courses involving bacterial or archaeal physiology, molecular microbiology, structural cell biology, molecular motility or evolution. Chapter 3 of this book is open access under a CC BY 4.0 license.
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 730
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Author: Joe Lutkenhaus
Publisher: Frontiers Media SA
ISBN: 2832514839
Category : Medical
Languages : en
Pages : 242
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Book Description
Author: Arieh Zaritsky
Publisher: Frontiers Media SA
ISBN: 2889198170
Category : Bacteria
Languages : en
Pages : 326
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Book Description
Bacterial Physiology was inaugurated as a discipline by the seminal research of Maaløe, Schaechter and Kjeldgaard published in 1958. Their work clarified the relationship between cell composition and growth rate and led to unravel the temporal coupling between chromosome replication and the subsequent cell division by Helmstetter et al. a decade later. Now, after half a century this field has become a major research direction that attracts interest of many scientists from different disciplines. The outstanding question how the most basic cellular processes - mass growth, chromosome replication and cell division - are inter-coordinated in both space and time is still unresolved at the molecular level. Several particularly pertinent questions that are intensively studied follow: (a) what is the primary signal to place the Z-ring precisely between the two replicating and segregating nucleoids? (b) Is this coupling related to the structure and position of the nucleoid itself? (c) How does a bacterium determine and maintain its shape and dimensions? Possible answers include gene expression-based mechanisms, self-organization of protein assemblies and physical principles such as micro-phase separations by excluded volume interactions, diffusion ratchets and membrane stress or curvature. The relationships between biochemical reactions and physical forces are yet to be conceived and discovered. This e-book discusses the above mentioned and related questions. The book also serves as an important depository for state-of-the-art technologies, methods, theoretical simulations and innovative ideas and hypotheses for future testing. Integrating the information gained from various angles will likely help decipher how a relatively simple cell such as a bacterium incorporates its multitude of pathways and processes into a highly efficient self-organized system. The knowledge may be helpful in the ambition to artificially reconstruct a simple living system and to develop new antibacterial drugs.
Author: Masayuki Inui
Publisher: Springer Nature
ISBN: 3030392678
Category : Science
Languages : en
Pages : 378
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Book Description
This updated second edition covers the molecular biology, genome engineering tools and comprehensive analysis techniques for Corynebacterium glutamicum. Aside from modern omics-based approaches, the authors also focus on cell physiology, including cell division, central carbon metabolic pathways, and the respiratory chain. Readers will learn how primary mechanisms like energy metabolism can be applied in processes like biorefinery. Newly added topics include cell envelope structures and aromatic compound metabolism in C. glutamicum. These chapters will be particularly useful for those interested in the microbial production of commodity chemicals, fuels, and proteins. Corynebacteriacea are already some of the most important industrial microorganisms. Understanding the cell physiology of C. glutamicum will help manufacturers to increase their product range and productivity through efficient metabolic engineering.
Author: Vincent A. Fischetti
Publisher: John Wiley & Sons
ISBN: 1683672879
Category : Science
Languages : en
Pages : 2803
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Book Description
Gram-positive bacteria, lacking an outer membrane and related secretory systems and having a thick peptidoglycan, have developed novel approaches to pathogenesis by acquiring (among others) a unique family of surface proteins, toxins, enzymes, and prophages. For the new edition, the editors have enhanced this fully researched compendium of Gram-positive bacterial pathogens by including new data generated using genomic sequencing as well as the latest knowledge on Gram-positive structure and mechanisms of antibiotic resistance and theories on the mechanisms of Gram-positive bacterial pathogenicity. This edition emphasizes streptococci, staphylococci, listeria, and spore-forming pathogens, with chapters written by many of the leading researchers in these areas. The chapters systematically dissect these organisms biologically, genetically, and immunologically, in an attempt to understand the strategies used by these bacteria to cause human disease. “This textbook comprises a superb collection of scientific knowledge making it a must-read for any graduate student, medical doctor, or investigator studying these gram-positive bacteria and inspiring future imaginations of biological knowledge.” - William R. Jacobs, Jr., PhD, Professor Microbiology & Immunology, Albert Einstein College of Medicine
Author: Walid El-Sharoud
Publisher: Springer Science & Business Media
ISBN: 3540749217
Category : Science
Languages : en
Pages : 377
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Book Description
The application of new molecular methodologies in the study of bacterial behavior and cell architecture has enabled new revolutionary insights and discoveries in these areas. This new text presents recent developments in bacterial physiology that are highly relevant to a wide range of readership including those interested in basic and applied knowledge. Its chapters are written by international scientific authorities at the forefront of the subject. The value of this recent knowledge in bacterial physiology is not only restricted to fundamental biology. It also extends to biotechnology and drug-discovery disciplines.
