Download or read book Role of Vanadium Complexes in Biological Systems Oxidation Reactions written by Amit Kumar and published by LAP Lambert Academic Publishing. This book was released on 2011-12 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vanadium has been reported to be an essential bio-element for certain organisms, including tunicates, bacteria and some fungi. This book aimed to describe the coordination chemistry of vanadium with biologically relevant ligands and presents synthesis of oxo, dioxo and oxoperoxovanadium(V) complexes. Most common oxidation states are +IV and +V and generally stabilized through V-O bond. Oxocations [VO]2+, [VO]3+ and [VO2]+ are most common for biological systems. The development of structural and functional model complexes of vanadium haloperoxidases is the key motive of vanadium chemistry and some of the complexes can be considered to be structural models of haloperoxidases. The model character also extends to functional similarities, in that they catalyse the oxidation, by oxidant, of sulfoxide, styrene, cyclohexene, phenol, trans-stilbene etc. Vanadium complexes have also been found to catalyze the oxidation and epoxidation of various organic substrates. Some of the complexes have also been tested for their antiamoebic activity.
Download or read book Metal Ions in Biological Systems written by Astrid Sigel and published by CRC Press. This book was released on 1995-02-22 with total page 828 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Volume 31, devoted solely to the role of vanadium in life processes, offers a comprehensive and timely account of this fascinating field by 37 distinguished, international authorities. Highlights the properties of the various oxidation states of vanadium, their affinity for biogenic ligands, the effects of vanadium species on enzyme activity, the role of vanadium in nitrogenases and haloperoxidases, and more."
Download or read book Vanadium in Biological Systems written by N.D. Chasteen and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past several decades, vanadium has increasingly attracted the interest of biologists and chemists. The discovery by Henze in 1911 that certain marine ascidians accumulate the metal in their blood cells in unusually large quantities has done much to stimulate research on the role of vanadium in biology. In the intervening years, a large number of studies have been carried out to investigate the toxicity of vanadium in higher animals and to determine whether it is an essential trace element. That vanadium is a required element for a few selected organisms is now well established. Whether vanadium is essential for humans remains unclear although evidence increasingly suggests that it probably is. The discovery by Cantley in 1977 that vanadate is a potent inhibitor of ATPases lead to numerous studies of the inhibitory and stimulatory effects of vanadium on phosphate metabolizing enzymes. As a consequence vanadates are now routinely used as probes to investigate the mechanisms of such enzymes. Our understanding of vanadium in these systems has been further enhanced by the work of Tracy and Gresser which has shown striking parallels between the chemistry of vanadates and phosphates and their biological compounds. The observation by Shechter and Karlish, and Dubyak and Kleinzeller in 1980 that vanadate is an insulin mimetic agent has opened a new area of research dealing with the hormonal effects of vanadium. The first vanadium containing enzyme, a bromoperoxidase from the marine alga Ascophyllum nodosum, was isolated in 1984 by Viltner.
Download or read book Vanadium written by Alan S. Tracey and published by CRC Press. This book was released on 2007-03-19 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first comprehensive resource on the chemistry of vanadium, Vanadium: Chemistry, Biochemistry, Pharmacology, and Practical Applications has evolved from over a quarter century of research that concentrated on delineating the aqueous coordination reactions that characterize the vanadium(V) oxidation state. The authors distill information o
Download or read book Bioinorganic Vanadium Chemistry written by Dieter Rehder and published by John Wiley & Sons. This book was released on 2008-04-15 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vanadium is named after Vanadis, the most aristocratic of Norse goddesses, who symbolises beauty and fertility - essential features of vanadium chemistry. It is a ubiquitous trace element, with a surprising range of biological functions. In Bioinorganic Vanadium Chemistry, Dieter Rehder addresses the major aspects of vanadium chemistry related to living organisms and the mutual impact between biological and inorganic vanadium chemistry. Topics covered include: the history, natural occurrence, distribution and impact of vanadium inorganic aspects of the function of vanadium in biological systems interaction of aqueous vanadate and vanadyl with biogenic ligands vanadium coordination compounds the vanadium-carbon bond methods of characterisation of biogenic and model vanadium systems (EPR and ENDOR for oxovanadium(IV); 51V NMR for vanadium(V); XAS) vanadium in ascidians and polychaeta worms the concentration of vanadium in the form of amavadin by Amanita mushrooms vanadate-dependent haloperoxidases vanadium and the nitrogen cycle vanadate as energiser for bacteria, and vanadophores medicinal aspectsm including the anti-diabetic potential of vanadium compounds interaction of vanadium with proteins and protein substrates vanadium and phosphate-metabolising enzymes Bioinorganic Vanadium Chemistry conveys the essential aspects of vanadium bioinorganic chemistry, making this book a valuable complement to more general bioinorganic chemistry texts and more specialized topical reviews for researchers and students alike.
Download or read book Vanadium Catalysis written by Manas Sutradhar and published by Royal Society of Chemistry. This book was released on 2020-11-05 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vanadium is one of the more abundant elements in the Earth’s crust and exhibits a wide range of oxidation states in its compounds making it potentially a more sustainable and more economical choice as a catalyst than the noble metals. A wide variety of reactions have been found to be catalysed by homogeneous, supported and heterogeneous vanadium complexes and the number of applications is growing fast. Bringing together the research on the catalytic uses of this element into one essential resource, including theoretical perspectives on proposed mechanisms for vanadium catalysis and an overview of its relevance in biological processes, this book is a useful reference for industrial and academic chemists alike.
Download or read book Vanadium Compounds written by Alan S. Tracey and published by . This book was released on 1998 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: The November 1997 symposium focused attention on the importance of understanding the interrelationships among the aqueous chemistry, the biochemistry, and the therapeutic utilization of vanadium compounds. The 28 contributions in this proceedings volume are divided into the three areas. Examples of the topics are insulin- mimetic action of selected vanadium compounds, synthetic models for vanadium haloperoxidases, the vanadium-containing nitrogenase system of Azotobacter vinelandii, a possible role for amavadine in some Amanita fungi, and vanadium salts in the treatment of human diabetes mellitus. Distributed by Oxford University Press. Annotation copyrighted by Book News, Inc., Portland, OR
Download or read book Vanadium written by Hitoshi Michibata and published by Springer Science & Business Media. This book was released on 2011-09-15 with total page 235 pages. Available in PDF, EPUB and Kindle. Book excerpt: The publication of Vanadium: Biochemical and Molecular Biological Approaches is particularly timely as it exactly coincides with the centennial anniversary of the discovery of vanadium by Professor Henze, in the blood cells of an ascidian (tunicate) collected in Gulf of Naples in 1911. Vanadium, atomic number 23, covers a wide range of oxidation states (from -2 to +5) and has unpaired electrons. Depending on these properties, a wide variety of enzymes and compounds containing vanadium have been found and the biochemical behaviour of vanadium has been investigated extensively. This monograph provides not only the basic properties and recent advances of vanadium chemistry but also presents recent topics on hyper-accumulators of vanadium, enzymatic roles of vanadium, biochemical functions of vanadium and medicinal functions of vanadium, which have been discovered by Biochemical and Molecular Biological Approaches. Vanadium: Biochemical and Molecular Biological Approaches is aimed at pure and applied chemists, biochemists, pharmaceutical and medical scientists.
Download or read book Metal Ions in Biological Systems written by Astrid Sigel and published by CRC Press. This book was released on 2004-03-26 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal ions are currently used for such applications as diabetes, anti-inflammatory, rheumatoid arthritis, psychiatric, and anti-ulcer medications, using compounds of vanadium, copper and zinc, gold, lithium, and bismuth, respectively. This text explores these applications in addition to an assessment of chelation therapy, uses in environmental scie
Download or read book Vanadium aminocarboxylate Complexes written by Brent James Hamstra and published by . This book was released on 1998 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Vanadium Biochemistry written by Manuel Aureliano and published by . This book was released on 2007-01-01 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vanadium has long been known to mimic or to enhance insulin activity. It was estimated that by the year 2025 about 300 million people would suffer from diabetes mellitus. Diabetic patients are also subject to other pathologies such as nephropathy, arterial and neurodegenerative diseases. Behind the purpose to produce a special review book in inorganic biochemistry in the area of vanadium compounds/vanadate species, is the increase interest of vanadium knowledge, not only in chemistry but also in biochemistry, biology, toxicology, pharmacology and medicine. It was a wonderful opportunity to bring together remarkable contributions from many people that are responsible, at least in part, for the actual knowledge of vanadium in biological systems, as well for many papers highly cited and for an entire generation of scientists in the field. Personally, I consider myself a beginner in the Biochemistry of Vanadium, (I obtained my first decavanadate solution 51V-NMR spectra by 1985, at the University of Coimbra), and a product of the outstanding group of scientists and teachers that lead the way about 25 years ago, at the late 70 ́s and early 80 ́s. They are truly responsible for the actual interest of vanadium in fascinating and different scientific fields of research. The present book can be divided in two main parts: vanadium chemistry/biochemistry and biology/pharmacology/medicine, within the 16 chapters that wipe away the frontiers of 10 different countries. A special attention is given to decavanadate structure and chemistry, biochemistry (effects in muscle contraction/regulation) and in vivo biological studies. Also noteworthy are the chapters describing studies in aquatic organisms such as the ecophysiology perspectives of vanadium accumulation by ascidians, the use of fishes and fish cells lines for understanding the processes of vanadium in biology, as an alternative to mammalian systems, pointing out to a different interface of research. Medicinal applications of vanadium are push forward in chapters focusing structure-activity relationship of anti-diabetic vanadium complexes, vanadium compounds as anti-tumour drugs and anti-parasitic agents, improving bioactive ligands activity through complexation with vanadium, osteogenic action of vanadium compounds and cytotoxicity, in order to make vanadium available and safe for clinical use. Milestones in the history of vanadium biochemistry are also the chapters about the redox profile of vanadium, the role of vanadium in bromoperoxidases, the vanadium binding proteins in ascidians and more recently decavanadate interactions with lipidic structures. Putting it all together, this special Vanadium Biochemistry book would not be so special without the contributions of eminent scientists around the world, although some have been recently retire, such as the esteemed Professor Ramasarma and the esteemed Professor Sakurai. Thanking to all the contributors of the Vanadium Biochemistry book, clearly a wide-ranging and in many aspects an educational book that reflects, at least in part, the versatile and fascinating biochemistry of vanadium.
Download or read book Biological Oxidation Systems V1 written by C.C. Reddy and published by Elsevier. This book was released on 2012-12-02 with total page 569 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biological Oxidation Systems, Volume I is a collection of papers presented at the 1989 Bangalore Symposium on Oxygen Systems. This symposium covers various research studies on the essential roles, and the dangers of dioxygen reactions in biology. This volume is organized into five parts encompassing 32 chapters, and starts with an overview of the biological oxidation mechanisms involving oxygen and reduced oxygen derivatives. Parts I and II deal with the catalytic role of cytochrome P-450 and oxidase and oxygenase containing a flavin or pteridine enzymes in several biological oxidation reactions. These parts examine the biochemical aspects, reaction kinetics, and reaction mechanisms of such reactions. Parts III and IV describe first the structure function and properties of copper-containing oxidases and oxygenases. These parts also discuss the role of nonheme iron-containing and other oxygenases in the indole metabolism. Part V focuses on the role of peroxidase enzymes in cell protection and metabolism. This book will prove useful to biologists, enzyme scientists, and researchers.
Download or read book Separation Preconcentration and Spectrophotometry in Inorganic Analysis written by Z. Marczenko and published by Elsevier. This book was released on 2000-10-18 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spectrophotometry enables one to determine, with good precision and sensitivity, almost all the elements present in small and trace quantities of any material. The method is particularly useful in the determination of non-metals and allows the determination elements in a large range of concentrations (from single % to low ppm levels) in various materials.In Separation, Preconcentration and Spectrophotometry in Inorganic Analysis, much attention has been paid to separation and preconcentration methods, since they play an essential role in increasing the selectivity and sensitivity of spectrophotometric methods. Separation and preconcentration methods have also been utilised in other determination techniques.Spectrophotometric methods which are widely used for the determination of the elements in a large variety of inorganic materials are presented in the book whilst separation and preconcentration procedures combined with spectrophotometry are also described. This book contains recent advances in spectrophotometry, detailed discussion of the instrumentation, and the techniques and reagents used for spectrophotometric determination of elements in a wide range of materials as well as a detailed discussion of separation and preconcentration procedures that precede the spectrophotometric detection.
Download or read book Studies on Vanadium Containing Model Complexes written by Nazmul Islam and published by LAP Lambert Academic Publishing. This book was released on 2010-07 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vanadium is an essential element in biological systems, participating in enzymic reactions. In addition, vanadate has shown great utility as a tool in molecular biology for recognizing and understanding the structure of phosphate binding proteins, by catalytic photocleavage of the peptide backbone. It is evidence that till now we are unable to study a bio molecule such as enzyme, protein chain, polypeptide etc, completely. To know the actual structure and function of the molecules, it is necessary to prepare some model compounds analogous to the bio-molecules of interest. V- compounds and vanadium-containing In this project, to study the vanadium protein interaction, an attempt was made to prepare model mixed ligand oxoperoxo compounds. Proteins may be intricately involved in vanadium binding in organisms. Peptides are the best one which most closely related models of proteins.Further, an attempt was made to prepare Oxovanadium (IV) complexes with Schiff s base. Mixed ligand peroxovanadium (V) complexes have also been attempted.
Download or read book Chemical Methods of Rock Analysis written by D. Hutchison and published by Elsevier. This book was released on 2012-12-02 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: A practical guide to the methods in general use for the complete analysis of silicate rock material and for the determination of all those elements present in major, minor or trace amounts in silicate and other rocks that are routinely, commonly or occasionally determined by methods that are considered to be essentially chemical in character. Such methods include those based upon spectrophotometry, flame emission spectrometry and atomic absorption spectroscopy, as well as gravimetry, titrimetry and the use of ion-selective electrodes. Separation stages are described in full, using precipitation, solvent extraction, distillation, and ion-ex procedures as appropriate. The third edition has been fully revised and updated.
Download or read book Comprehensive Inorganic Chemistry II written by and published by Newnes. This book was released on 2013-07-23 with total page 7694 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive Inorganic Chemistry II, Nine Volume Set reviews and examines topics of relevance to today’s inorganic chemists. Covering more interdisciplinary and high impact areas, Comprehensive Inorganic Chemistry II includes biological inorganic chemistry, solid state chemistry, materials chemistry, and nanoscience. The work is designed to follow on, with a different viewpoint and format, from our 1973 work, Comprehensive Inorganic Chemistry, edited by Bailar, Emeléus, Nyholm, and Trotman-Dickenson, which has received over 2,000 citations. The new work will also complement other recent Elsevier works in this area, Comprehensive Coordination Chemistry and Comprehensive Organometallic Chemistry, to form a trio of works covering the whole of modern inorganic chemistry. Chapters are designed to provide a valuable, long-standing scientific resource for both advanced students new to an area and researchers who need further background or answers to a particular problem on the elements, their compounds, or applications. Chapters are written by teams of leading experts, under the guidance of the Volume Editors and the Editors-in-Chief. The articles are written at a level that allows undergraduate students to understand the material, while providing active researchers with a ready reference resource for information in the field. The chapters will not provide basic data on the elements, which is available from many sources (and the original work), but instead concentrate on applications of the elements and their compounds. Provides a comprehensive review which serves to put many advances in perspective and allows the reader to make connections to related fields, such as: biological inorganic chemistry, materials chemistry, solid state chemistry and nanoscience Inorganic chemistry is rapidly developing, which brings about the need for a reference resource such as this that summarise recent developments and simultaneously provide background information Forms the new definitive source for researchers interested in elements and their applications; completely replacing the highly cited first edition, which published in 1973
Download or read book The Biological Chemistry of the Elements written by J. R. R. Fraústo da Silva and published by Oxford University Press, USA. This book was released on 1991 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors of this study on bio-inorganic chemistry seek to examine the importance of inorganic elements. They survey chemical and physical factors controlling the elements of life, discuss the functions of inorganic elements and examine the co-operative interaction in living systems.
