Download or read book Biological Interactions Of Sulfur Compounds written by Stephen C. Mitchell and published by CRC Press. This book was released on 2003-09-02 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text focuses on the biological interactions of sulphur compounds which arise specifically from the presence of the sulphur atom within the molecule. The book opens with introductory chapters on the chemistry and biology of sulphur, before tackling the field by introducing compounds which share a common chemical combination. In general, following a description of the uses and impact upon the biological field, specific chemical group characteristics are discussed together with the biological activity and structure-activity relationships where known. The toxicity of such compounds, their consequences in biochemical and clinical terms, and their mechanisms of biological interaction are then addressed.
Download or read book Sulfur in Plants written by Malcolm J. Hawkesford and published by Springer Science & Business Media. This book was released on 2007-03-07 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the latest findings on how plants respond physiologically to sulfur in their environment. It combines an ecosystems approach with new insights at the molecular and biochemical level. Key areas are explored to assess the functions and implications of this essential plant nutrient in a range of natural, semi-natural and anthropogenic environments. The result is an important new reference on the relationships between plants and sulfur.
Download or read book Chemico biological Interactions of Sulfide and Organosulfur Compounds microform written by Mohammad Ali Eghbal and published by National Library of Canada = Bibliothèque nationale du Canada. This book was released on 2004 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt: Exposure of isolated hepatocytes to NaHS led to GSH depletion. CYP450 inhibitors were protective against NaHS toxicity and prevented GSH depletion. Methionine was protective against NaHS and its effect was overcome by inhibition of S-adenosyl-L-homocysteine hydrolase by adenosine. This suggests that S-adenosyhnethionine dependent methylation can detoxify H2S in the liver. The H 2O2 scavengers were protective against H2S toxicity. H2S induced ROS formation was dose dependent and pyruvate inhibited this ROS production. Nontoxic concentrations of H2S enhanced the cytotoxicity of H2O2 generated by glucose/glucose oxidase, which was inhibited by CYP450 inhibitors. Furthermore hepatocyte ROS formation induced by H2S was decreased by CYP450 inhibitors cimetidine and benzyleimidazole. Therefore CYP450-dependent metabolism of H2S is responsible for inducing ROS production. H2S induced cytotoxicity was preceded by mitochondrial depolarization. In this project, two aspects of the action of hydrogen sulfide and reactive sulfur species have been studied: cytotoxic and cytoprotective effects. Freshly isolated hepatocytes have been used in order to examine the prevalence and mechanisms of the different sulfide dependent processes that influence cell survival and death. Our hypothesis is that the exogenous application of high concentrations of HS and other reactive sulfur species to isolated hepatocytes in the presence of various modulators will provide a rapid mechanism dependent screen for ways in which reactive sulfur species can modulate cell survival and death. NaHS and/or garlic/onion derived organosulfur compounds, Allyl mercaptan (AM) and Propyl mercaptan (PM) protected hepatocytes against hydroquinone, methylbenzoquinone, and 5-hydroxynaphtoquinone. NaHS and mercaptans increased the cytotoxicity of tert-butylhydroquinone. Treatment of these benzoquinones with allyl mercaptan, propanethiol or NaHS led to formation of new compounds which by MS/MS analysis were identified as mercaptan conjugates of corresponding hydroquinones. (Abstract shortened by UMI.)H2S, allyl mercaptan (AM), propyl mercaptan (PM), diallyl disulfide (DADS) and diallyl sulfide (DAS) prevented hepatocyte toxicity induced by allyl alcohol, 1-bromoethanol and their toxic metabolites. MS/MS spectrometry revealed adduct formation between AM and/or PM with the acrolein and/or haloacetaldehyde formed by the metabolism of allyl alcohol and alpha-haloethanol. H 2S or garlic and onion mercaptans are cytoprotective by trapping toxic aldehyde metabolites and/or by preventing lipid peroxidation.
Download or read book Sulfur Metabolism in Phototrophic Organisms written by Rüdiger Hell and published by Springer Science & Business Media. This book was released on 2008-03-19 with total page 539 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sulfur is one of the most versatile elements in life. This book provides, for the first time, in-depth and integrated coverage of the functions of sulfur in phototrophic organisms including bacteria, plants and algae. It bridges gaps between biochemistry and cellular biology of sulfur in these organisms, and of biology and environments dominated by them. The book therefore provides a comprehensive overview of plant sulfur relations from genome to environment.
Download or read book Natural Sulfur Compounds written by Doriano Cavallini and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt: The third International Meeting on "Low Molecular Weight Sulfur Containing Natural Products,"sponsored by the International Union of Pure and Applied Chemistry, was held in the historical building of the Accademia Nazionale dei Lincei, Rome, Italy, June 18-21, 1979. The symposium was held in order to exchange knowledge in the intriguing and complex field of sulfur biochemistry. This theme brought together scientists from many speciali zed areas from organic and physical chemistry to biology and medicine. The interdisciplinary nature of the meeting gave to the participants the opportunity to discuss pro blems of common interest approached from different scienti fic standpoints. This volume contains 47 contributions presented at the meeting which mainly deal with new structural and metabolic aspects of sulfur biochemistry. An important aspect of such a scientific meeting is the rapid publication of the proceedings. Through the cooperation of the authors in providing "camera ready" copies of their manuscripts, the good efforts of the Orga nizing Committee, and the Plenum Press Publishing Co., it has been possible to publish this book within a few months of the meeting.
Download or read book Organic Sulfur Chemistry written by Shigeru Oae and published by CRC Press. This book was released on 2018-05-04 with total page 521 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains fundamental knowledge regarding the structure and mechanisms of organic sulfur chemistry. Topics include sulfur bondings, effects of sulfur groups, stereochemistry around sulfur, substitution, ligand coupling within s-sulfurane, oxidation, reduction and rearrangement. References in this work total over 2,300. Anyone with an interest in organic sulfur chemistry will find this book to be fascinating reading.
Download or read book Biotechnology and Biology of Trichoderma written by Vijai G. Gupta and published by Newnes. This book was released on 2014-02-17 with total page 569 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biotechnology and Biology of Trichoderma serves as a comprehensive reference on the chemistry and biochemistry of one of the most important microbial agents, Trichoderma, and its use in an increased number of industrial bioprocesses for the synthesis of many biochemicals such as pharmaceuticals and biofuels. This book provides individuals working in the field of Trichoderma, especially biochemical engineers, biochemists and biotechnologists, important information on how these valuable fungi can contribute to the production of a wide range of products of commercial and ecological interest. - Provides a detailed and comprehensive coverage of the chemistry, biochemistry and biotechnology of Trichoderma, fungi present in soil and plants - Includes most important current and potential applications of Trichoderma in bioengineering, bioprocess technology including bioenergy & biofuels, biopharmaceuticals, secondary metabolites and protein engineering - Includes the most recent research advancements made on Trichoderma applications in plant biotechnology and ecology and environment
Download or read book Sulfur Centered Reactive Intermediates in Chemistry and Biology written by C. Chatgilialoglu and published by Springer Science & Business Media. This book was released on 2013-03-08 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: A wonderfully successful NATO Advanced Study Institute on "Sulfur-Centered Reactive Intermediates in Chemistry and Biology" was held 18-30 June, 1989, at the Hotel Villa del Mare in Maratea, Italy. Despite the beautiful setting with mountains behind us and over looking the clear blue Mediterranean Sea under a cloudless sky (and with a private beach available), the lectures were extremely well attended. While some credit can go to the seriousness of the students, more must go to the calibre of speakers and the high quality of C. Chatgilialoglu, and Co-Director, Professor K. -D. their presentations. The Director, Dr. Asmus, are to be congratulated for putting together such an outstanding scientific program. Dr. Chatgilialoglu is also to be commended for arranging an equally stimulating social pro gram which included bus, train and boat trips to many local sites of interest. It was particularly fitting that a meeting on the chemistry and biochemistry of sulfur should be held in Italy since Italian chemists have made major contributions to our under standing of the organic chemistry of sulfur, including the chemistry of its reactive inter mediates. The early Italian interest in sulfur chemistry arose from the fact that Italy, or more specifically, Sicily, was a major world producer of sulfur prior to the development and exploitation of the Frasch process in Texas and Louisiana.
Download or read book Organic Sulfur Chemistry written by Shigeru Oae and published by CRC Press. This book was released on 1992-06-15 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: his volume provides an organic chemical perspective on the biochemistry of sulfur compounds. The authors have applied the principles of various biochemical processes to a general theory of the biochemical phenomena of sulfur compounds. These processes include metabolisms of inorganic sulfur compounds and metalloenzymes, mechanisms of thiolesterase actions, functions of disulfides in proteins, and biochemical redox reactions. Organic Sulfur Chemistry: Biochemical Aspects is an ideal reference for students and researchers in both biochemistry and organic chemistry.
Download or read book The Effect of Ultraviolet Radiation and the Interaction with Sulfur Compounds on Growth and Division of Tetrahymena written by William D. Sullivan and published by . This book was released on 1959 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Natural Sulfur Compounds written by Doriano Cavallini and published by . This book was released on 1980-05-01 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nitrosation Reactions and the Chemistry of Nitric Oxide written by D.L.H. Williams and published by Elsevier. This book was released on 2004-12-16 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since 1988, there has been much literature published on the chemistry of nitric oxide, particularly in the field of S-nitrosation and the chemistry of S-nitroso compounds. Written by a chemist for the chemistry community, this book provides an update of the chemistry of nitrosation reactions, dealing with both the synthetic and mechanistic aspects of these reactions. It also looks at the chemistry of nitric oxide in relation to the amazing biological properties of this simple diatomic molecule, which were unknown until around 1990.* Provides an update on previously published literature on nitric oxide chemistry* Contains chapters on reagents for nitrosation, nitrosation at nitrogen, aliphatic and aromatic carbon, oxygen, sulfur and metal centres* Looks at hot research topics such as synthesis, properties and reactions of s-nitrosothiols
Download or read book Veterans at Risk written by Institute of Medicine and published by National Academies Press. This book was released on 1993-02-01 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recently, World War II veterans have come forward to claim compensation for health effects they say were caused by their participation in chemical warfare experiments. In response, the Veterans Administration asked the Institute of Medicine to study the issue. Based on a literature review and personal testimony from more than 250 affected veterans, this new volume discusses in detail the development and chemistry of mustard agents and Lewisite followed by interesting and informative discussions about these substances and their possible connection to a range of health problems, from cancer to reproductive disorders. The volume also offers an often chilling historical examination of the use of volunteers in chemical warfare experiments by the U.S. militaryâ€"what the then-young soldiers were told prior to the experiments, how they were "encouraged" to remain in the program, and how they were treated afterward. This comprehensive and controversial book will be of importance to policymakers and legislators, military and civilian planners, officials at the Department of Veterans Affairs, military historians, and researchers.
Download or read book Anoxygenic Photosynthetic Bacteria written by R.E. Blankenship and published by Springer Science & Business Media. This book was released on 2006-04-11 with total page 1333 pages. Available in PDF, EPUB and Kindle. Book excerpt: Anoxygenic Photosynthetic Bacteria is a comprehensive volume describing all aspects of non-oxygen-evolving photosynthetic bacteria. The 62 chapters are organized into themes of: Taxonomy, physiology and ecology; Molecular structure of pigments and cofactors; Membrane and cell wall structure: Antenna structure and function; Reaction center structure and electron/proton pathways; Cyclic electron transfer; Metabolic processes; Genetics; Regulation of gene expression, and applications. The chapters have all been written by leading experts and present in detail the current understanding of these versatile microorganisms. The book is intended for use by advanced undergraduate and graduate students and senior researchers in the areas of microbiology, genetics, biochemistry, biophysics and biotechnology.
Download or read book Green Photosynthetic Bacteria written by J.M. Olson and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 315 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Prokaryotes written by Edward F. DeLong and published by Springer. This book was released on 2014-10-13 with total page 567 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Prokaryotes is a comprehensive, multi-authored, peer reviewed reference work on Bacteria and Achaea. This fourth edition of The Prokaryotes is organized to cover all taxonomic diversity, using the family level to delineate chapters. Different from other resources, this new Springer product includes not only taxonomy, but also prokaryotic biology and technology of taxa in a broad context. Technological aspects highlight the usefulness of prokaryotes in processes and products, including biocontrol agents and as genetics tools. The content of the expanded fourth edition is divided into two parts: Part 1 contains review chapters dealing with the most important general concepts in molecular, applied and general prokaryote biology; Part 2 describes the known properties of specific taxonomic groups. Two completely new sections have been added to Part 1: bacterial communities and human bacteriology. The bacterial communities section reflects the growing realization that studies on pure cultures of bacteria have led to an incomplete picture of the microbial world for two fundamental reasons: the vast majority of bacteria in soil, water and associated with biological tissues are currently not culturable, and that an understanding of microbial ecology requires knowledge on how different bacterial species interact with each other in their natural environment. The new section on human microbiology deals with bacteria associated with healthy humans and bacterial pathogenesis. Each of the major human diseases caused by bacteria is reviewed, from identifying the pathogens by classical clinical and non-culturing techniques to the biochemical mechanisms of the disease process. The 4th edition of The Prokaryotes is the most complete resource on the biology of prokaryotes. The following volumes are published consecutively within the 4th Edition: Prokaryotic Biology and Symbiotic Associations Prokaryotic Communities and Ecophysiology Prokaryotic Physiology and Biochemistry Applied Bacteriology and Biotechnology Human Microbiology Actinobacteria Firmicutes Alphaproteobacteria and Betaproteobacteria Gammaproteobacteria Deltaproteobacteria and Epsilonproteobacteria Other Major Lineages of Bacteria and the Archaea
Download or read book Biochemistry of Sulfur written by Ryan J. Huxtable and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: There can be few elements with a biochemistry as coherent as that of sulfur. This important element is crucial to myriad aspects of metabo lism, catalysis, and structure. The plurality of functions in which sulfur is involved derives squarely from the numerous oxidation states in which it may exist, some having great stability, some being capable of ready redox interconversions, and yet others having great instability. As a result, the flux of sulfur from the geosphere through the various kingdoms of life leaves few biochemical processes unaffected. Although there are large gaps in the fabric of our basic knowledge of sulfur biochemistry, it is sufficiently framed to allow a unified and organized story, a story which many of the best-known names in bio chemistry have helped to write. It has been both a task and a privilege to try and summarize this story, one that is enormous, complex, fast moving, still developing and, above all, exciting. I suppose that no mo nographer of such a vast subject could be satisfied with his efforts. It is unfortunately probable that in attempting this task I have made as many errors as a Stilton cheese has blue streaks, and as many omissions as a Swiss cheese has holes. Perfection is not to be achieved in a monograph. Inasmuch as I have succeeded, the credit belongs to those whose efforts gave us the knowledge we have. Where I have failed, the fault is only mine.
