Prokaryotic Cytoskeletons
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Prokaryotic Cytoskeletons
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Author : Jan Löwe
language : en
Publisher: Springer
Release Date : 2017-05-11
Prokaryotic Cytoskeletons written by Jan Löwe and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-05-11 with Science categories.
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.
The Prokaryotic Cytoskeleton
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Author : S. Trachtenberg
language : en
Publisher:
Release Date : 2006
The Prokaryotic Cytoskeleton written by S. Trachtenberg and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.
The eukaryotic cytoskeleton is an array of filamentous (e.g., actin, tubulin and intermediate filaments) and accessory proteins governing cell motility, cell shape control and intracellular trafficking. Until not long ago, the absence of an internal, eukaryotic-like cytoskeleton was regarded as a characteristic property of prokaryotic cells. Exceptions to this rule were the Mollicutes ('Spiroplasma and Mycoplasma'), in which a unique cytoskeleton was detected shortly after their discovery. The traditional cytoskeletal functions in bacteria are carried out by highly conserved external and periplasmic filaments (flagella, pili) and cell walls. In recent years, functional analogs of actin (MreB), tubulin (FtsZ) and intermediate filaments (crescentin) were found in prokaryotes. This special issue brings together invited contributions by experts in the field, elucidating the functional and structural aspects of the traditional and evolving prokaryotic cytoskeleton. Concise and up-to-date, it is recommended reading for microbiologists, cell and molecular biologists, biochemists and biophysicists.
Principles Of Biology
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Author : Lisa Bartee
language : en
Publisher:
Release Date : 2017
Principles Of Biology written by Lisa Bartee and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with categories.
The Principles of Biology sequence (BI 211, 212 and 213) introduces biology as a scientific discipline for students planning to major in biology and other science disciplines. Laboratories and classroom activities introduce techniques used to study biological processes and provide opportunities for students to develop their ability to conduct research.
The Origin And Evolution Of The Cell
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Author : H. Hartman
language : en
Publisher: World Scientific Publishing Company Incorporated
Release Date : 1992
The Origin And Evolution Of The Cell written by H. Hartman and has been published by World Scientific Publishing Company Incorporated this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Science categories.
The Origin And Evolution Of The Cell
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Author :
language : en
Publisher:
Release Date : 1992
The Origin And Evolution Of The Cell written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Cells categories.
The Cytoskeleton Of Flagellate And Ciliate Protists
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Author : Michael Melkonian
language : en
Publisher: Springer
Release Date : 1991-12-06
The Cytoskeleton Of Flagellate And Ciliate Protists written by Michael Melkonian and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991-12-06 with Science categories.
Protists are fascinating organisms that have diversified and protozoologists. For example, phycologists use the evolutionarily to inhabit most of the biosphere. Their term "basal body" while protozoologists use "kine tosome"; mycologists were indifferent and used both cytoskeleton is the primary reason that such a diver sification is possible. Microtubules provided freedom terms! from the constraint of prokaryotic cell walls and they As knowledge increased, it became more and more were organized in various cytoskeletal configurations. apparent that the organisms studied in the classical The nine pairs plus two flagellum, a major component fields did not fit into monophyletic lineages. And when of many protistan cytoskeletons, gave a new meaning efforts were made to organize the protists into a phy to the word motility beginning at least one thousand logenetic classification, it became strikingly apparent million years ago. Associated with the development of that we needed a common vocabulary. Until such a the flagellum were new contractile and noncontractile common vocabulary exists, it will remain difficult to proteins that are necessary for control and manipu compare studies by scientists from different fields, it lation of the flagella. As the new protists ventured out will be difficult to identify homologous structures into new habitats and filled new niches, they evolved among protists, and the historical barriers created by new ways of sensing their surrounding environment. individual fields of mycology, phycology and proto Phototactic responses became tightly coupled with the zoology will remain."
Bacterial Cell Walls And Membranes
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Author : Andreas Kuhn
language : en
Publisher: Springer
Release Date : 2020-08-14
Bacterial Cell Walls And Membranes written by Andreas Kuhn and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-08-14 with Science categories.
This book provides an up-to-date overview of the architecture and biosynthesis of bacterial and archaeal cell walls, highlighting the evolution-based similarities in, but also the intriguing differences between the cell walls of Gram-negative bacteria, the Firmicutes and Actinobacteria, and the Archaea. The recent major advances in this field, which have brought to light many new structural and functional details, are presented and discussed. Over the past five years, a number of novel systems, e.g. for lipid, porin and lipopolysaccharide biosynthesis have been described. In addition, new structural achievements with periplasmic chaperones have been made, all of which have revealed amazing details on how bacterial cell walls are synthesized. These findings provide an essential basis for future research, e.g. the development of new antibiotics. The book’s content is the logical continuation of Volume 84 of SCBI (on Prokaryotic Cytoskeletons), and sets the stage for upcoming volumes on Protein Complexes.
Molecular Biology Of The Cell
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Author : Bruce Alberts
language : en
Publisher:
Release Date : 2002
Molecular Biology Of The Cell written by Bruce Alberts and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Cytology categories.
Prokaryotology
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Author : Sorin Sonea
language : en
Publisher: PUM
Release Date : 2000
Prokaryotology written by Sorin Sonea and has been published by PUM this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Reference categories.
Prokaryotes are profoundly original, highly efficient microorganisms that have played a decisive role in the evolution of life on Earth. Although disjunct, taken together their cells form one global superorganism or biological system. One of the results of their non-Darwinian evolution has been the development of enormous diversity and bio-energetic variety. Prokaryotic cells possess standardized mechanisms for easy gene exchanges (lateral gene transfer) and they can behave like receiving and broadcasting stations for genetic material. Ultimately, the result is a global communication system based on the prokaryotic hereditary patrimony, by analogy, a two-billion-year-old world wide web for their benefit. Eukaryotes have evolved from the association of at least three complementary prokaryotic cells, and their subsequent development has been enriched and accelerated by symbioses with other prokaryotes. One of these symbioses was responsible for the origin of vascular plants which transformed vast sections of the continental surface of the Earth from deserts to areas with luxuriant, life-supporting vegetation. All forms of life on our planet are directly or indirectly sustained and enriched by the positive contribution of prokaryotes. Sorin Sonea and L�o G. Mathieu have been professors at the Department of Microbiology and Immunology (Faculty of Medicine) at the Universit� de Montr�al. They have long been advocates of the ideas presented in this book.
Abiotic Stress Response In Plants
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Author : Narendra Tuteja
language : en
Publisher: John Wiley & Sons
Release Date : 2016-01-08
Abiotic Stress Response In Plants written by Narendra Tuteja and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-01-08 with Science categories.
Understanding abiotic stress responses in plants is critical for the development of new varieties of crops, which are better adapted to harsh climate conditions. The new book by the well-known editor team Narendra Tuteja and Sarvajeet Gill provides a comprehensive overview on the molecular basis of plant responses to external stress like drought or heavy metals, to aid in the engineering of stress resistant crops. After a general introduction into the topic, the following sections deal with specific signaling pathways mediating plant stress response. The last part covers translational plant physiology, describing several examples of the development of more stress-resistant crop varieties.