Download or read book Size Limits of Very Small Microorganisms written by National Research Council and published by National Academies Press. This book was released on 1999-10-13 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt: How small can a free-living organism be? On the surface, this question is straightforward-in principle, the smallest cells can be identified and measured. But understanding what factors determine this lower limit, and addressing the host of other questions that follow on from this knowledge, require a fundamental understanding of the chemistry and ecology of cellular life. The recent report of evidence for life in a martian meteorite and the prospect of searching for biological signatures in intelligently chosen samples from Mars and elsewhere bring a new immediacy to such questions. How do we recognize the morphological or chemical remnants of life in rocks deposited 4 billion years ago on another planet? Are the empirical limits on cell size identified by observation on Earth applicable to life wherever it may occur, or is minimum size a function of the particular chemistry of an individual planetary surface? These questions formed the focus of a workshop on the size limits of very small organisms, organized by the Steering .Group for the Workshop on Size Limits of Very Small Microorganisms and held on October 22 and 23, 1998. Eighteen invited panelists, representing fields ranging from cell biology and molecular genetics to paleontology and mineralogy, joined with an almost equal number of other participants in a wide-ranging exploration of minimum cell size and the challenge of interpreting micro- and nano-scale features of sedimentary rocks found on Earth or elsewhere in the solar system. This document contains the proceedings of that workshop. It includes position papers presented by the individual panelists, arranged by panel, along with a summary, for each of the four sessions, of extensive roundtable discussions that involved the panelists as well as other workshop participants.
Download or read book Archaebacteria 85 written by Otto Kandler and published by . This book was released on 1986 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Archaebacteria 85 written by and published by . This book was released on 1986 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Biochemistry of Archaea Archaebacteria written by M. Kates and published by Elsevier. This book was released on 1993-12-13 with total page 633 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last 10 years, considerable information has accumulated on the biochemistry of archaea. In this volume, the subject as a whole is treated in a comprehensive manner. The book brings together recent knowledge concerning general metabolism, bioenergetics, molecular biology and genetics, membrane lipid and cell-wall structural chemistry and evolutionary relations, of the three major groups of archaea: the extreme halophiles, the extreme thermophiles, and the methanogens. Subjects included are: the evolutionary relationship of these microorganisms to all other living cells; special metabolic features of archeaea; protein structural chemistry; cell envelopes; molecular biology in archaea including DNA structure and replication, transcription apparatus, translation apparatus, and ribosomal structure; and a final chapter on the molecular genetics of archaea. This comprehensive scope ensures its usefulness to researchers, and stimulates further study in this rapidly developing field.
Download or read book Wikipedia written by and published by PediaPress. This book was released on with total page 2053 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Surprising Archaea written by John L. Howland and published by Oxford University Press, USA. This book was released on 2000 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Archaea constitute the fifth kingdom of living organisms and were probably the first life forms. Their discovery in extreme environments has provided a unique vantage on the principles of life.
Download or read book Thermophilic Microorganisms and Life at High Temperatures written by T.D. Brock and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 478 pages. Available in PDF, EPUB and Kindle. Book excerpt: From 1965 through 1975, I conducted an extensive field and laboratory research project on thermophilic microorganisms. The field work was based primarily in Yellowstone National Park, using a field laboratory we set up in the city of W. Yellowstone, Montana. The laboratory work was carried out from 1965 through 1971 at Indiana University, Bloomington, and subsequently at the University of Wisconsin, Madison. Although this research project began small, it quickly ramified in a wide variety of directions. The major thrust was an attempt to understand the ecology and evolutionary relationships of thermophilic microorganisms, but research also was done on biochemical, physiologic, and taxonomic aspects of thermophiles. Four new genera of thermophilic microorganisms have been discovered during the course of this 10-year period, three in my laboratory. In addition, a large amount of new information has been obtained on some thermophilic microorganisms that previously had been known. In later years, a considerable amount of work was done on Yellowstone algal bacterial mats as models for Precambrian stromatolites. In the broadest sense, the work could be considered geomicrobiological, or biogeochemi cal, and despite the extensive laboratory research carried out, the work was always firmly rooted in an attempt to understand thermophilic microorga nisms in their natural environments. Indeed, one of the prime motivations for initiating this work was a view that extreme environments would provide useful models for studying the ecology of microorganisms. As a result of this 10-year research project, I published over 100 papers.
Download or read book Thermophiles written by Juergen Wiegel and published by CRC Press. This book was released on 2002-09-11 with total page 367 pages. Available in PDF, EPUB and Kindle. Book excerpt: Late-1990s developments in the study of thermophiles have had considerable significance on theories of evolution. These micro-organisms are able to thrive at temperatures near or even above 100 degrees Celsius, and scientists have begun to study their biology in an attempt to provide clues about the beginnings of life on our planet. Researchers from diverse background such as biology, genetics, biogeochemistry, oceanography, systematics and evolution come together in this comprehensive volume to address questions such as: Why did life originate? Was the Earth at high temperatures when life began, and if so, how high? What can we conclude about the origins of life from studying thermophilic organisms?
Download or read book The New Foundations of Evolution written by Jan Sapp and published by Oxford University Press. This book was released on 2009-07-24 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the story of a profound revolution in the way biologists explore life's history, understand its evolutionary processes, and reveal its diversity. It is about life's smallest entities, deepest diversity, and greatest cellular biomass: the microbiosphere. Jan Sapp introduces us to a new field of evolutionary biology and a new brand of molecular evolutionists who descend to the foundations of evolution on Earth to explore the origins of the genetic system and the primary life forms from which all others have emerged. In so doing, he examines-from Lamarck to the present-the means of pursuing the evolution of complexity, and of depicting the greatest differences among organisms. The New Foundations of Evolution takes us into a world that classical evolutionists could never have imagined: a deep phylogeny based on three domains of life and multiple kingdoms, and created by mechanisms very unlike those considered by Darwin and his followers. Evolution by leaps seems to occur regularly in the microbial world where molecular evolutionists have shown the inheritance of acquired genes and genomes are major modes of evolutionary innovation. Revisiting the history of microbiology for the first time from the perspective of evolutionary biology, Sapp shows why classical Darwinian conceptions centering on questions of the origin of species were forged without a microbial foundation, why classical microbiologists considered it impossible to know the course of evolution, and classical molecular biologists considered the evolution of the molecular genetic system to be beyond understanding. In telling this stirring story of scientific iconoclasm, this book elucidates how the new evolutionary biology arose, what methods and assumptions underpin it, and the fiery controversies that continue to shape biologists' understanding of the foundations of evolution today.
Download or read book Genetics and Molecular Biology of Anaerobic Bacteria written by Madeleine Sebald and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 723 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of bacterial genetics has been restricted for many years to Escherichia coli and a few other genera of aerobic or facultatively anaerobic bacteria such as Pseudomonas, Bacillus, and Salmonella. The prevailing view up to recent times has been that anaerobic bacteria are interesting organisms but nothing is known about their genetics. To most microbiologists, anaerobic bacteria appeared as a sort of distant domain, reserved for occasional intrusions by taxonomists and medical microbiologists. By the mid-1970s, knowledge of the genetics and molecular biology of anaerobes began to emerge, and then developed rapidly. but also im This was the result of advances in molecular biology techniques, portantly because of improvements in basic techniques for culturing anaerobes and for understanding their biochemistry and other areas of in terest. Investigations in this field were also stimulated by a renewal of interest in their ecology, their role in pathology and in biotransformations, and in the search for alternative renewable sources of energy. The initial idea for this book came from Thomas D. Brock. When Dr. Brock requested my opinion about two years ago on the feasibility of publishing a book on the genetics of anaerobic bacteria, as a part of the Brock/Springer Series in Contemporary Bioscience, I answered positively but I was apprehen sive about assuming the role of editor. However, I was soon reassured by the enthusiastic commitment of those I approached to contribute. Eventually, thanks to the caring cooperation of the contributors, the task became relatively easy.
Download or read book The Bacteriophages written by Richard Calendar and published by Oxford University Press. This book was released on 2006 with total page 761 pages. Available in PDF, EPUB and Kindle. Book excerpt: This authoritative, timely, and comprehensively referenced compendium on the bacteriophages explores current views of how viruses infect bacteria. In combination with classical phage molecular genetics, new structural, genomic, and single-molecule technologies have rendered an explosion in our knowledge of phages. Bacteriophages, the most abundant and genetically diverse type of organism in the biosphere, were discovered at the beginning of the 20th century and enjoyed decades of used as anti-bacterial agents before being eclipsed by the antibiotic era. Since 1988, phages have come back into the spotlight as major factors in pathogenesis, bacterial evolution, and ecology. This book reveals their compelling elegence of function and their almost inconceivable diversity.Much of the founding work in molecular biology and structural biology was done on bacteriophages. These are widely used in molecular biology research and in biotechnology, as probes and markers, and in the popular method of assesing gene expression.
Download or read book A Field Guide to Bacteria written by Betsey Dexter Dyer and published by Comstock Publishing Associates. This book was released on 2003 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written for curious souls of all ages, this title opens readers eyes--and noses and ears--to this hidden world. Useful illustrations accompany Dyer's lively text.
Download or read book National Library of Medicine Current Catalog written by National Library of Medicine (U.S.) and published by . This book was released on with total page 1028 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Genetics Abstracts written by and published by . This book was released on 1988 with total page 844 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemolithoautotrophic Bacteria written by Tateo Yamanaka and published by Springer Science & Business Media. This book was released on 2008-08-28 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bacteria change the surface of the Earth. All kinds of bacteria reside in the biosphere, and although sometimes they may cause damage, they also help in cleaning the surface of the Earth and in the circulation of various substances. Chemolithoautotrophic bacteria in particular have a unique and intimate relationship with inorganic substances and human beings. This book covers in detail advances in the biochemistry and physiology of several chemolithoautotrophic bacteria as well as their relationship to certain environments. Included are recent findings regarding the oxidation mechanisms of ammonia, nitrite, sulfur compounds, and ferrous iron by special bacteria. The characteristics of many cytochromes are described to further advance the understanding of bacterial oxidation systems of inorganic compounds. Applications of bacteria, such as in sewage treatment and in biohydometallurgy, among others, are detailed, and bacteria considered closest to the origins of life are discussed in the final chapter.
Download or read book RNA Turnover in Bacteria Archaea and Organelles written by Lynne E. Maquat and published by Academic Press. This book was released on 2008-12-23 with total page 621 pages. Available in PDF, EPUB and Kindle. Book excerpt: Specific complexes of protein and RNA carry out many essential biological functions, including RNA processing, RNA turnover, RNA folding, as well as the translation of genetic information from mRNA into protein sequences. Messenger RNA (mRNA) decay is now emerging as an important control point and a major contributor to gene expression. Continuing identification of the protein factors and cofactors, and mRNA instability elements, responsible for mRNA decay allow researchers to build a comprehensive picture of the highly orchestrated processes involved in mRNA decay and its regulation. Covers the difference in processing of mRNA between eukaryotes, bacteria and archea. Benefit: Processing of mRNA differs greatly between eukaryotes, bacteria and archea and this affords researchers readily reproducible techniques to understand and study the molecular pathogenesis of disease Expert researchers introduce the most advanced technologies and techniques to identify mRNA processing, transport, localization and turnover which are central to the process of gene expression. Benefit: Keeps MIE buyers and online subscribers up-to-date with the latest research Offers step by step lab instructions including necessary equipment and reagents. Benefit: Provides tried and tested techniques which eliminate searching through many different sources. Tested techniques are trustworthy and avoid pitfalls so the same mistakes are not made over and over
Download or read book Glycolipids Phosphoglycolipids and Sulfoglycolipids written by Morris Kates and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: The early history and development of the field of glycolipids was concerned mainly with the predominant glycolipids found in higher animal tissues, namely the glycosphingolipids, as has been extensively documented by J. N. Kanfer and S. Hakomori in Volume 3 of this series. The major glycolipids in organisms of the plant kingdom, however, such as bacteria, yeasts and fungi, algae, and higher plants, are glycoglycerolipids, although glycosphingolipids are also present as minor components in these organisms, except for bacteria. It is of interest that one of the pioneers in glycosphingolipid research, Herbert E. Carter, also pioneered the discovery and structural elucidation of the plant galactosyldiacylglycerols. This class of glycolipids is present in chlo roplast membranes and must surely be one of the most ubiquitous and abun dant natural substances in the world, thereby deserving the attention of lipid biochemists. It is therefore surprising to learn that in contrast to the glycosphingolipids, which were discovered in the 1870s, glycoglycerolipids were not discovered until the 1950s. Since that time investigations of the structure and distribution of these glycolipids have proceeded at an exponen tially increasing rate, and much information is now available for representa tives of many genera of bacteria, yeasts, algae, and higher plants. Glycoglyce rolipids have also been identified in animal cells, particularly in the brain, testes, and sperm.
