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Approaches Toward The Synthesis Of New Molybdenum Complexes As Models For The Active Site In Nitrogenase Enzymes
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Book Synopsis Approaches Toward the Synthesis of New Molybdenum Complexes as Models for the Active Site in Nitrogenase Enzymes by : Jessica Hilborn
Download or read book Approaches Toward the Synthesis of New Molybdenum Complexes as Models for the Active Site in Nitrogenase Enzymes written by Jessica Hilborn and published by . This book was released on 2005 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Spectroscopic Studies of Molybdenum Complexes as Models for Nitrogenase by :
Download or read book Spectroscopic Studies of Molybdenum Complexes as Models for Nitrogenase written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Because biological nitrogen fixation requires Mo, there is an interest in inorganic Mo complexes which mimic the reactions of nitrogen-fixing enzymes. Two such complexes are the dimer Mo2O4 (cysteine)2/sup 2 -/ and trans-Mo(N2)2(dppe)2 (dppe = 1,2-bis(diphenylphosphino)ethane). The H1 and C13 NMR of solutions of Mo2O4(cys)2/sup 2 -/ are described. It is shown that in aqueous solution the cysteine ligands assume at least three distinct configurations. A step-wise dissociation of the cysteine ligand is proposed to explain the data. The Extended X-ray Absorption Fine Structure (EXAFS) of trans-Mo(N2)2(dppe)2 is described and compared to the EXAFS of MoH4(dppe)2. The spectra are fitted to amplitude and phase parameters developed at Bell Laboratories. On the basis of this analysis, one can determine (1) that the dinitrogen complex contains nitrogen and the hydride complex does not and (2) the correct Mo-N distance. This is significant because the Mo inn both complexes is coordinated by four P atoms which dominate the EXAFS. A similar sort of interference is present in nitrogenase due to S coordination of the Mo in the enzyme. This model experiment indicates that, given adequate signal to noise ratios, the presence or absence of dinitrogen coordination to Mo in the enzyme may be determined by EXAFS using existing data analysis techniques. A new reaction between Mo2O4(cys)2/sup 2 -/ and acetylene is described to the extent it is presently understood. A strong EPR signal is observed, suggesting the production of stable Mo(V) monomers. EXAFS studies support this suggestion. The Mo K-edge is described. The edge data suggests Mo(VI) is also produced in the reaction. Ultraviolet spectra suggest that cysteine is released in the course of the reaction.
Download or read book Research Awards Index written by and published by . This book was released on 1989 with total page 742 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis New Molybdenum (vi) and Molybdenum (v) Complexes as Models for the Active Sites of Molybdenum Enzymes by : Gang Peng
Download or read book New Molybdenum (vi) and Molybdenum (v) Complexes as Models for the Active Sites of Molybdenum Enzymes written by Gang Peng and published by . This book was released on 1989 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Enzymatic Bioelectrocatalysis by : Kenji Kano
Download or read book Enzymatic Bioelectrocatalysis written by Kenji Kano and published by Springer Nature. This book was released on 2020-11-13 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the fundamental aspects of the electrochemistry and redox enzymes that underlie enzymatic bioelectrocatalysis, in which a redox enzyme reaction is coupled with an electrode reaction. Described here are the basic concept and theoretical aspects of bioelectrocatalysis and the various experimental techniques and materials used to study and characterize related problems. Also included are the various applications of bioelectrocatalysis to bioelectrochemical devices including biosensors, biofuel cells, and bioreactors. This book is a unique source of information in the area of enzymatic bioelectrocatalysis, approaching the subject from a cross-disciplinary point of view.
Book Synopsis Bioinspired Catalysis by : Wolfgang Weigand
Download or read book Bioinspired Catalysis written by Wolfgang Weigand and published by John Wiley & Sons. This book was released on 2014-08-18 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an overview of bioinspired metal-sulfur catalysis by covering structures, activities and model complexes of enzymes exhibiting metal sulphur moieties in their active center.
Book Synopsis Biomedical Index to PHS-supported Research by :
Download or read book Biomedical Index to PHS-supported Research written by and published by . This book was released on 1991 with total page 1104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nitrogen Fixation at the Millennium by : G.J. Leigh
Download or read book Nitrogen Fixation at the Millennium written by G.J. Leigh and published by Elsevier. This book was released on 2002-11-22 with total page 471 pages. Available in PDF, EPUB and Kindle. Book excerpt: The turn of the millennium from the twentieth to the twenty-first century provides an occasion to review our understanding of a biological process, biological nitrogen fixation, that is of prime importance for the continued survival of mankind. This process has provided a basis for maintaining soil fertility since the beginning of organised agriculture, yet its very existence was confirmed only just over a century ago. In the intervening years, an enormous intellectual effort has dispersed much of the mystery surrounding biological nitrogen fixation. Biological fixation is widely exploited in agriculture, as are nitrogen fertilisers prepared for the last hundred years under extreme conditions of temperature and pressure. However, despite all our efforts, the fundamental nature of the reactions involved at the heart of the biological process remain unknown. This book aims to describe what we have learned in the last one hundred years or so about biological nitrogen fixation, about what its chemistry appears to be, and how it is applied in agriculture. This ambitious objective has not been attempted recently. It is aimed at students and those who wish to enter these very challenging areas of research, and who need to learn the state of the art at the turn of the millennium. The authors are all acknowledged world experts in their fields. They have prepared concise, well referenced and authoritative accounts of their subjects. This book provides a unique summary of the current state of knowledge that will be indispensable to all students and researchers, actual and potential, interested in biological nitrogen fixation.
Book Synopsis Proceedings of the National Academy of Sciences of the United States of America by : National Academy of Sciences (U.S.).
Download or read book Proceedings of the National Academy of Sciences of the United States of America written by National Academy of Sciences (U.S.). and published by . This book was released on 2007 with total page 1172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Biomedical Index to PHS-supported Research: pt. A. Subject access A-H by :
Download or read book Biomedical Index to PHS-supported Research: pt. A. Subject access A-H written by and published by . This book was released on 1992 with total page 1064 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Molybdenum Enzymes by : Thomas G. Spiro
Download or read book Molybdenum Enzymes written by Thomas G. Spiro and published by Wiley-Interscience. This book was released on 1985-11-14 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 7 in the Metal Ions in Biology Series, divided into two parts, covers the nitrogenase enzyme complex and the molybdenum redox enzymes. Part one covers the chemistry of Mo-Fe-S clusters and their relationship to nitrogenase, cofactor chemistry and biochemistry of nitrogenase, spectroscopic and electrochemical studies of the Fe-Mo cofactor and Fe-S clusters, and more. Part Two surveys oxo-molybdenum chemistry, discusses the nature of the molybdo-pterin complex, and describes the characteristics of several of the Mo redox enzymes.
Book Synopsis Molybdenum and Molybdenum-Containing Enzymes by : Michael P. Coughlan
Download or read book Molybdenum and Molybdenum-Containing Enzymes written by Michael P. Coughlan and published by Elsevier. This book was released on 2014-06-28 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt: Molybdenum and Molybdenum-Containing Enzymes is a collection of papers that deals with the various concerns with molybdenum-containing enzymes. The text first covers the organometallic chemistry of molybdenum, and then proceeds to tackling molybdenum-containing enzymes, such as xanthine oxidase, aldehyde oxidase, and sulphite oxidase. The text also discusses the advancement in the understanding of molybdenum-containing enzymes. The remaining chapters deal with the genetics of molybdoenzymes and the nutritional aspects of molybdenum. The book will be of great use to students, researchers, and practitioners of biochemistry.
Book Synopsis Comprehensive Dissertation Index by :
Download or read book Comprehensive Dissertation Index written by and published by . This book was released on 1989 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modern Coordination Chemistry by : Jeff Leigh
Download or read book Modern Coordination Chemistry written by Jeff Leigh and published by Royal Society of Chemistry. This book was released on 2007-10-31 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coordination chemistry, as we know it today, has been shaped by major figures from the past, one of whom was Joseph Chatt. Beginning with a description of Chatt's career presented by co-workers, contemporaries and students, this fascinating book then goes on to show how many of today's leading practitioners in the field, working in such diverse areas as phosphines, hydrogen complexes, transition metal complexes and nitrogen fixation, have been influenced by Chatt. The reader is then brought right up-to-date with the inclusion of some of the latest research on these topics, all of which serves to underline Chatt's continuing legacy. Intended as a permanent record of Chatt's life, work and influence, this book will be of interest to lecturers, graduate students, researchers and science historians.
Book Synopsis Comprehensive Dissertation Index: Chemistry, P-Z by :
Download or read book Comprehensive Dissertation Index: Chemistry, P-Z written by and published by . This book was released on 1984 with total page 844 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nitrogen Fixation: From Molecules to Crop Productivity by : Fabio O. Pedrosa
Download or read book Nitrogen Fixation: From Molecules to Crop Productivity written by Fabio O. Pedrosa and published by Springer Science & Business Media. This book was released on 2006-04-18 with total page 661 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings bring together diverse disciplines that study nitrogen fixation and describe the most recent advances made in various fields: chemists are now studying FeMoco, the active site of nitrogenase in non-protein surroundings, and have refined the crystal structure of the enzyme to 1.6 angstroms.
Book Synopsis American Doctoral Dissertations by :
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1995 with total page 896 pages. Available in PDF, EPUB and Kindle. Book excerpt:
