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Glutathione Transferases And Gamma Glutamyl Transpeptidases
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Book Synopsis Glutathione Transferases and Gamma-Glutamyl Transpeptidases by : Helmut Sies
Download or read book Glutathione Transferases and Gamma-Glutamyl Transpeptidases written by Helmut Sies and published by Gulf Professional Publishing. This book was released on 2005-11-22 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt: Focuses on particular aspects of the so-called Phase II of drug detoxication, which has important ramifications for endogenous metabolism and nutrition. This volume on glutathione transferases and gamma-glutamyl transpeptidases serves to bring together methods and concepts in a rapidly developing field of cell and systems biology.
Book Synopsis Gamma-Glutamyl Transpeptidases by : Immacolata Castellano
Download or read book Gamma-Glutamyl Transpeptidases written by Immacolata Castellano and published by Springer Science & Business Media. This book was released on 2013-07-09 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gamma-Glutamyl Transpeptidases (γ-GTs) are members of the N-terminal nucleophile hydrolase superfamily, enzymes that cleave the γ-glutamyl amide bond of glutathione to liberate cysteinylglycine. The released γ-glutamyl group can be transferred to water (hydrolysis) or to amino acids or short peptides (transpeptidation). γ-GT plays a key role in the gamma glutamyl cycle by regulating the cellular levels of the antioxidant glutathione, hence it is a critical enzyme in maintaining cellular redox homeostasis.γ-GT is upregulated during inflammation and in several human tumors, and it is involved in many physiological disorders related to oxidative stress, such as Parkinson’s disease and diabetes. Furthermore, this enzyme is used as a marker of liver disease and cancer. This book covers current knowledge about the structure-function relationship of γ-GTs and gives information about applications of γ-GTs in different fields ranging from clinical biochemistry to biotechnology and biomedicine.
Book Synopsis Glutathione S-Transferases and Gamma-Glutamyl Transpeptidase in Nodular Liver Diseases in Dogs. (Thesis). by : University of Guelph. Dept. of Pathology
Download or read book Glutathione S-Transferases and Gamma-Glutamyl Transpeptidase in Nodular Liver Diseases in Dogs. (Thesis). written by University of Guelph. Dept. of Pathology and published by . This book was released on 1989 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Role of Gamma-glutamyl-transpeptidase in Glutathione Metabolism of NIH3T3 Cells Transfected with the Human Enzyme by : Gloria Volohonsky
Download or read book The Role of Gamma-glutamyl-transpeptidase in Glutathione Metabolism of NIH3T3 Cells Transfected with the Human Enzyme written by Gloria Volohonsky and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Functions of Glutathione in Liver and Kidney by : H. Sies
Download or read book Functions of Glutathione in Liver and Kidney written by H. Sies and published by Springer. This book was released on 2011-11-15 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The serene phrase, Lest I forget thee, glutathione ... , coined by the Kosowers (1) to describe the state in the 1960's, must be replaced now by something like "Inevitable GSH" in order to characterize the current situation. The surge in interest on the ubiquitous tripeptide has been ama zing, with publications on GSH running at rates as high as one per day, so that it seemed appropriate to convene international experts for a discussion of recent develop ments this year. Unlike the two previous meetings in this decade held in Tlibingen in 1973 (2) and in santa Ynez in 1975 (3), the scope was restricted to Functions of Gluta thione in Liver and Kidney. Only in this way did an in-depth discussion of the current state of knowledge in a limit ed topic appear possible. The last couple of years have seen a fascinating pro ductivity in the fields of (a) Regulation of the Glutathione Level in the Liver, (b) Role of y-Glutamyltransferase in Gluta thione Turnover with emphasis on the renal enzyme, and a critical appraisal of the y-Glutamyl Cycle, (c) Hyd:roperox ide and Disulfide Metaholism, enriched by the discovery of the nonseleniurn-dependent glutathione peroxidase activ ity and its relation to the glutathione-S-transferases, and the participation of the 2GSH/GSSG system in redox transitions in intact organ, cells and isolated mito chondria, and (d) a multitude of Pharmacological and Toxi cological Aspects related to glutathione, mainly centered on the events leading to liver damage and the protective
Book Synopsis Human [gamma]-glutamyl Transpeptidase 1 by :
Download or read book Human [gamma]-glutamyl Transpeptidase 1 written by and published by . This book was released on 2015 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: [Gamma]-Glutamyl transpeptidase 1 (GGT1) is a cell surface, N-terminal nucleophile hydrolase that cleaves glutathione and other [gamma]-glutamyl compounds. GGT1 expression is essential in cysteine homeostasis, and its induction has been implicated in the pathology of asthma, reperfusion injury, and cancer. In this study, we report four new crystal structures of human GGT1 (hGGT1) that show conformational changes within the active site as the enzyme progresses from the free enzyme to inhibitor-bound tetrahedral transition states and finally to the glutamate-bound structure prior to the release of this final product of the reaction. The structure of the apoenzyme shows flexibility within the active site. The serine-borate-bound hGGT1 crystal structure demonstrates that serine-borate occupies the active site of the enzyme, resulting in an enzyme-inhibitor complex that replicates the enzyme's tetrahedral intermediate/transition state. The structure of GGsTop-bound hGGT1 reveals its interactions with the enzyme and why neutral phosphonate diesters are more potent inhibitors than monoanionic phosphonates. These structures are the first structures for any eukaryotic GGT that include a molecule in the active site covalently bound to the catalytic Thr-381. The glutamate-bound structure shows the conformation of the enzyme prior to release of the final product and reveals novel information regarding the displacement of the main chain atoms that form the oxyanion hole and movement of the lid loop region when the active site is occupied. Lastly, tThese data provide new insights into the mechanism of hGGT1-catalyzed reactions and will be invaluable in the development of new classes of hGGT1 inhibitors for therapeutic use.
Book Synopsis Functions of Glutathione in Liver and Kidney by : H. Sies
Download or read book Functions of Glutathione in Liver and Kidney written by H. Sies and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Gluthione Transferases and Gamma-Glutamyl Transpeptidases by :
Download or read book Gluthione Transferases and Gamma-Glutamyl Transpeptidases written by and published by . This book was released on 2005 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Glutathione Transferases and gamma-Glutamyl Transpeptidases by :
Download or read book Glutathione Transferases and gamma-Glutamyl Transpeptidases written by and published by Academic Press. This book was released on 2005-12-06 with total page 928 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume on glutathione transferases and gamma-glutamyl transpeptidases serves to bring together current methods and concepts in an interesting, important and rapidly developing field of cell and systems biology. It focuses on particular aspects of the so-called Phase II of drug detoxication, which has important ramifications for endogenous metabolism and nutrition. This volume of Methods in Enzymology presents current knowledge and in this field of research. Together with the volumes on Quinones and Quinone Enzymes (volumes 378 and 382), and on Phase II Conjugation Enzymes and Transport Systems (volume 400), the state of knowledge on proteomics and metabolomics of many pathways of (waste) product elimination, enzyme protein induction and gene regulation and feedback control is provided. We trust that this volume will help stimulate future investigations and speed the advance of knowledge in systems biology. *A laboratory standard for more than 40 years *Over 400 volumes strong *Also available on ScienceDirect
Book Synopsis Methods in Enzymology by : Helmut Sies
Download or read book Methods in Enzymology written by Helmut Sies and published by . This book was released on 2005 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Handbook of Milk Composition by : Bozzano G Luisa
Download or read book Handbook of Milk Composition written by Bozzano G Luisa and published by Elsevier. This book was released on 1995-10-23 with total page 947 pages. Available in PDF, EPUB and Kindle. Book excerpt: This informative treatise offers a concise collection of existing, expert data summarizing the composition of milk. The Handbook of Milk Composition summarizes current information on all aspects of human and bovine milk, including: sampling, storage, composition, as well as specific chapters on major and minor components such as protein, carbohydrates, lipids, electrolytes, minerals, vitamins and hormones. The book also features comprehensive coverage of compartmentation, host-defense components, factors affecting composition, composition of commercial formulas, and contaminants.* Reliable data on the composition of human and bovine milks.* Discusses the many factors affecting composition.* Composition tables make up 25-30% of the total book.* Problems concerning sampling and analysis are described.* Should appeal equally to industry and academia.* Also of interest to developing countries in need of information on infant nutrition and agricultural development
Book Synopsis Physician's Guide to the Diagnosis, Treatment, and Follow-Up of Inherited Metabolic Diseases by : Nenad Blau
Download or read book Physician's Guide to the Diagnosis, Treatment, and Follow-Up of Inherited Metabolic Diseases written by Nenad Blau and published by Springer. This book was released on 2014-07-08 with total page 880 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book, combining and updating two previous editions, is a unique source of information on the diagnosis, treatment, and follow-up of metabolic diseases. The clinical and laboratory data characteristic of rare metabolic conditions can be bewildering for both clinicians and laboratory personnel. Reference laboratory data are scattered, and clinical descriptions may be obscure. The Physician’s Guide documents the features of more than five hundred conditions, grouped according to type of disorder, organ system affected (e.g. liver, kidney, etc) or phenotype (e.g. neurological, hepatic, etc). Relevant clinical findings are provided and pathological values for diagnostic metabolites highlighted. Guidance on appropriate biochemical genetic testing is provided. Established experimental therapeutic protocols are described, with recommendations on follow-up and monitoring. The authors are acknowledged experts, and the book will be a valuable desk reference for all who deal with inherited metabolic diseases.
Book Synopsis Protective Chemical Agents in the Amelioration of Plant Abiotic Stress by : Aryadeep Roychoudhury
Download or read book Protective Chemical Agents in the Amelioration of Plant Abiotic Stress written by Aryadeep Roychoudhury and published by John Wiley & Sons. This book was released on 2020-07-07 with total page 698 pages. Available in PDF, EPUB and Kindle. Book excerpt: A guide to the chemical agents that protect plants from various environmental stressors Protective Chemical Agents in the Amelioration of Plant Abiotic Stress offers a guide to the diverse chemical agents that have the potential to mitigate different forms of abiotic stresses in plants. Edited by two experts on the topic, the book explores the role of novel chemicals and shows how using such unique chemical agents can tackle the oxidative damages caused by environmental stresses. Exogenous application of different chemical agents or chemical priming of seeds presents opportunities for crop stress management. The use of chemical compounds as protective agents has been found to improve plant tolerance significantly in various crop and non-crop species against a range of different individually applied abiotic stresses by regulating the endogenous levels of the protective agents within plants. This important book: Explores the efficacy of various chemical agents to eliminate abiotic stress Offers a groundbreaking look at the topic and reviews the most recent advances in the field Includes information from noted authorities on the subject Promises to benefit agriculture under stress conditions at the ground level Written for researchers, academicians, and scientists, Protective Chemical Agents in the Amelioration of Plant Abiotic Stress details the wide range of protective chemical agents, their applications, and their intricate biochemical and molecular mechanism of action within the plant systems during adverse situations.
Book Synopsis The Enzymes of Biological Membranes by : Anthony Martonosi
Download or read book The Enzymes of Biological Membranes written by Anthony Martonosi and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 461 pages. Available in PDF, EPUB and Kindle. Book excerpt: Much of the information currently available on the transport systems of bacterial and animal cell membranes and their mode of coupling to metabolic supply of energy can be found in this volume. Consideration of the participating enzymes dictated the choice of topics: Several transport systems where little information is available on the enzymology of the process are not included, while separate chapters deal with y-glutamyl transpeptidase and intestinal disaccharidases which meet many of the requirements of transport enzymes. The volume also includes two chapters on photosynthetic membranes as a general introduction to the topic. Other aspects of biological transport and photosynthesis will be developed in detail in a forthcoming volume now in preparation. These chapters reveal the excitement and rapid advance of the field, the daily reports of new concepts, new techniques, and new experimental findings which instantly interact to generate further progress. Our aim was to provide a starting point for those who are just beginning, and an opportunity for others to stop, take stock, and start in a new direction. My warmest thanks to all who contributed to this volume.
Book Synopsis Glutathione In The Nervous System by : Christopher Ari Shaw
Download or read book Glutathione In The Nervous System written by Christopher Ari Shaw and published by Routledge. This book was released on 2018-10-08 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of this text is to focus readers attention on three major areas; the origin and localization of GSH in the nervous system; the multiple effects of GSH on neural health activity; and the potential for alterations on GSH status to lead to neurological damage of the type observed in amyotrophic lateral sclerosis, Parkinson's disease and other neurological disorders. The text also touches upon the additional roles of the antoxidant GSH, including possible neurotransmitter action, redox modulation of ionotropic receptor function, and neuroprotection against exicitoxic actions of glutamate.
Book Synopsis The Changing Faces of Glutathione, a Cellular Protagonist by : Alfonso Pompella
Download or read book The Changing Faces of Glutathione, a Cellular Protagonist written by Alfonso Pompella and published by Frontiers Media SA. This book was released on 2015-07-17 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Glutathione (GSH) has been described for a long time just as a defensive reagent against the action of toxic xenobiotics (drugs, pollutants, carcinogens), both directly and as a cofactor for GSH transferases. As a prototype antioxidant, it has been involved in cell protection from the noxious effect of excess oxidant stress, both directly and as a cofactor of glutathione peroxidases. In addition, it has long been known that GSH is capable of forming disulfide bonds with cysteine residues of proteins, and the relevance of this mechanism ("S-glutathionylation") in regulation of protein function has been well documented in a number of research fields. Rather paradoxically, it has also been highlighted that GSH—and notably its catabolites, as originated by metabolism by gamma-glutamyltransferase—can promote oxidative processes, by participating in metal ion-mediated reactions eventually leading to formation of reactive oxygen species and free radicals. Also, a fundamental role of GSH has been recognized in the storage and transport of nitric oxide (NO), in the form of S-nitrosoglutathione (GSNO). The significance of GSH as a major factor in regulation of cell life, proliferation, and death, can be regarded as the integrated result of all these roles, as well as of more which are emerging in diverse fields of biology and pathophysiology. Against this background, modulation of GSH levels and GSH-related enzyme activities represents a fertile field for experimental pharmacology in numerous and diverse perspectives of animal, plant and microbiologic research. This research topic includes 14 articles, i.e. 4 Opinion Articles, 6 Reviews, and 4 Original Research Articles. The contributions by several distinguished research groups, each from his own standpoint of competence and expertise, provide a comprehensive and updated view over the diverse roles, the changing faces of GSH and GSH-related enzymes in cell’s health, disease and death.
Book Synopsis Oxidative Stress and Redox Regulation by : Ursula Jakob
Download or read book Oxidative Stress and Redox Regulation written by Ursula Jakob and published by Springer Science & Business Media. This book was released on 2013-03-15 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many physiological conditions such as host defense or aging and pathological conditions such as neurodegenerative diseases, and diabetes are associated with the accumulation of high levels of reactive oxygen species and reactive nitrogen species. This generates a condition called oxidative stress. Low levels of reactive oxygen species, however, which are continuously produced during aerobic metabolism, function as important signaling molecules, setting the metabolic pace of cells and regulating processes ranging from gene expression to apoptosis. For this book we would like to recruit the experts in the field of redox chemistry, bioinformatics and proteomics, redox signaling and oxidative stress biology to discuss how organisms achieve the appropriate redox balance, the mechanisms that lead to oxidative stress conditions and the physiological consequences that contribute to aging and disease.
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