Streptomyces

Author: Paul Dyson
Publisher: Horizon Scientific Press
ISBN: 1904455778
Size: 38.87 MB
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Streptomycetes are unusually complex bacteria that are abundant in soil. They grow as branching filaments and form chains of spores. Most importantly, they have an extraordinary ability to make antibiotics, for which they are the main industrial source, as well as other metabolites with medicinal properties. In recent years, the search for new antibiotics and other drugs in streptomycetes has been augmented by genomic studies, genome mining, and new biotechnological approaches. With contributions from some of the leading scientists in the field, this book documents recent research and development in streptomycetes genomics, physiology, and metabolism. With a focus on biotechnology and genomics, the book provides an excellent source of up-to-date information. Topics include: genome architecture * conjugative genetic elements * differentiation * protein secretion * central carbon metabolic pathways * regulation of nitrogen assimilation * phosphate control of metabolism * gamma-butyrolactones and their role in antibiotic regulation * clavulanic acid and clavams * genome-guided exploration * gene clusters for bioactive natural products * genomics of cytochromes p450. The book is essential reading for research scientists, biotechnologists, graduate students, and other professionals involved in streptomycetes research, antibiotic and antimicrobial development, drug discovery, soil microbiology and related fields. It is a recommended text for all microbiology laboratories.

Streptomyces In Nature And Medicine

Author: David A. Hopwood
Publisher: Oxford University Press
ISBN: 9780199722280
Size: 48.20 MB
Format: PDF, ePub
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This is an insiders account of 50 years of genetic studies of the soil-inhabiting microbes that produce most of the antibiotics used to treat infections, as well as anti-cancer, anti-parasitic and immunosuppressant drugs. The book begins by describing how these microbes the actinomycetes were discovered in the latter part of the nineteenth century, but remained a Cinderella group until, in the 1940s, they shot to prominence with the discovery of streptomycin, the first effective treatment for tuberculosis and only the second antibiotic, after penicillin, to become a medical marvel. There followed a massive effort over several decades to find further treatments for infectious diseases and cancer, tempered by the rise of antibiotic resistance consequent on antibiotic misuse and over-use. The book goes on to describe the discovery of gene exchange in the actinomycetes in the context of the rise of microbial genetics in the mid-20th century, leading to determination of the complete DNA sequence of a model member of the group at the turn of the millennium. There follow chapters in which the intricate molecular machinery that adapts the organisms metabolism and development to life in the soil, including antibiotic production, is illuminated by the DNA blueprint. Then come an up-to-the minute account of the use of genetic engineering to make novel, hybrid, antibiotics, and a topical description of techniques to learn the roles of the thousands of genes in a genome sequence, throwing a powerful light on the biology of the organisms and their harnessing for increasing antibiotic productivity. In the final chapter we return to the mycobacteria that cause tuberculosis and leprosy, the first actinomycetes to be discovered, and how methodology, in part derived from the study of the streptomycetes, is being applied to understand and control these still deadly pathogens.

Genetics And Product Formation In Streptomyces

Author: Simon Baumberg
Publisher: Springer Science & Business Media
ISBN: 1468459228
Size: 68.64 MB
Format: PDF, Mobi
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The Streptomycetes are industrially widely used microorganisms due to their ability to produce numerous different chemical compounds. These show very varied effects upon other living systems, and result from profound and subtle biochemical and morphological differentiation during the streptomycete life cycle. It is therefore not surprising that research on the genetics of antibiotic biosynthesis and differentiation in this group is currently progressing rapidly in many countries. Intimately connected with the production of antibiotics is resistance to them; analysis of this is giving further information about the origin and evolution of this class of genes and their hypothesized spread among other microorganisms. Another interesting feature of the Streptomyces group is their mycelial growth. Also, their ecologically important utilization of high molecular weight compounds requires enzymes to be transported outside the cell to hydrolyze non-diffusible substrates. Finally, we have as yet limited understanding of the various mechanisms of genome rearrangement observed in some of these species; deletions and/or amplifications of enormous amounts of DNA can occur without seriously affecting the viability of the organism under laboratory conditions. The present volume, which includes contributions addressing the above subjects and others, originates from a meeting on "Genetics and Product Formation in Streptomyces" sponsored by the Federation of European Microbiological Societies in Erfurt on May 1-6 1990. Compared to previous ones of this kind held in 1979, 1983 and 1987 in Weimar, one can point to impressive progress in the study and applications of Streptomyces genetics.

Streptomyces Advances In Research And Application 2013 Edition

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Publisher: ScholarlyEditions
ISBN: 1481680374
Size: 44.73 MB
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Streptomyces—Advances in Research and Application: 2013 Edition is a ScholarlyBrief™ that delivers timely, authoritative, comprehensive, and specialized information about Streptomyces coelicolor in a concise format. The editors have built Streptomyces—Advances in Research and Application: 2013 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Streptomyces coelicolor in this book to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Streptomyces—Advances in Research and Application: 2013 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.

Streptomyces Advances In Research And Application 2011 Edition

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Publisher: ScholarlyEditions
ISBN: 1464954518
Size: 32.59 MB
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Streptomyces: Advances in Research and Application: 2011 Edition is a ScholarlyPaper™ that delivers timely, authoritative, and intensively focused information about Streptomyces in a compact format. The editors have built Streptomyces: Advances in Research and Application: 2011 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Streptomyces in this eBook to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Streptomyces: Advances in Research and Application: 2011 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.