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Apport De La Mobilite Ionique En Spectrometrie De Masse Pour Les Etudes Enzymatiques
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Book Synopsis Apport de la mobilité ionique en spectrométrie de masse pour les études enzymatiques by : Anna Ziemianin
Download or read book Apport de la mobilité ionique en spectrométrie de masse pour les études enzymatiques written by Anna Ziemianin and published by . This book was released on 2011 with total page 253 pages. Available in PDF, EPUB and Kindle. Book excerpt: La première partie de ma thèse a été consacrée à l’étude de l’activité de plusieurs inhibiteurs de l'acétylcholinestérase (AChE) qu’ils soient connus ou potentiellement actifs, in vitro, au moyen de la spectrométrie de masse. Les développements méthodologiques liés à la mise en place de la méthode d’analyse et l’automatisation des analyses ont été mis au point pour divers inhibiteurs compétitifs et non compétitifs connus. Ces développements ont ensuite été appliqués à de nouveaux inhibiteurs types huprines. Le screening des inhibiteurs potentiels de l’AChE a été réalisé par suivi de l’activité enzymatique. En utilisant un spectromètre de masse (ESI-IT-MS), la réaction d’hydrolyse de l’ACh en choline catalysée par l’AChE, in vitro, a été caractérisée quantitativement. Le résultat final est une classification par activité croissante en vue d’utilisations pharmaceutiques potentielles. La seconde partie de ma thèse concerne le développement de l’approche par spectrométrie de masse supramoléculaire avec la mise en place de méthodes permettant de profiter du potentiel de technologies MS encore plus puissantes tel que le couplage entre la spectrométrie de mobilité ionique et la spectrométrie de masse (SYNAPT G2 HDMS, Waters). Le contenu de mes recherches porte principalement sur le développement de stratégies d’analyses et l’optimisation instrumentale avec pour but la caractérisation de complexes supramoléculaires de hautes masses protéines – ligands. Ce travail d’optimisation en IMS-MS a été effectué sur la protéine tétramèrique, l’alcool déshydrogénase (ADH) (148kDa) et les complexe ADH – NAD+ et ADH – inhibiteurs.
Book Synopsis Etude conformationnelle de peptides et protéines par mesure de mobilité ionique couplée à la spectrométrie de masse by : Florian Albrieux
Download or read book Etude conformationnelle de peptides et protéines par mesure de mobilité ionique couplée à la spectrométrie de masse written by Florian Albrieux and published by . This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ce travail de thèse porte sur l'analyse conformationelle de biomolécules en phase gazeuse. L'étude d'objets complexes en phase gazeuse permet de connaître les facteurs intrinsèques stabilisant leur structure. La première étape de mes travaux a été le couplage entre un appareil de mobilité ionique (IMS) et un appareil de spectrométrie de masse (MS). Nous avons simulé (SimIon) et développé différentes optiques ioniques fonctionnant à haute pression (entonnoirs à ions, piège ionique). Ces modifications expérimentales nous ont permis de commencer des études conformationnelles de biomolécules en phase gazeuse.Les premières expériences avaient pour objectif d'observer les facteurs stabilisants une structure secondaire sur des séries de peptides analogues. La première étude a été réalisée sur des séries de polyalalanines et de polyglycines de formules Arg(Ala)4XxxAla4Lys et Arg(Gly)4Xxx(Gly)4Lys, où Xxx est l'un des 20 acides aminés naturels. Nous nous sommes intéressés à l'influence de l'acide aminé central sur la conformation globale. Puis nous avons observés la stabilité de l'hélice de la partie transmembranaire de la protéine M2 du virus de la grippe A et de différents mutants. Ces études ont permit de montrer l'importance de la solvatation des charges en phase gazeuse.Enfin nous avons initié une étude sur le repliement des protéines en utilisant une protéine modèle, le lysozyme. Nous nous sommes plus particulièrement intéressés aux mécanismes de repliements en fonction du degré d'oxydation de cette dernière.
Book Synopsis Nouvelles méthodologies en spectrométrie de masse native et mobilité ionique pour la caractérisation structurale de macrobiomolécules et de leurs complexes associés by : Johann Stojko
Download or read book Nouvelles méthodologies en spectrométrie de masse native et mobilité ionique pour la caractérisation structurale de macrobiomolécules et de leurs complexes associés written by Johann Stojko and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ce travail de thèse porte sur le développement de méthodes en spectrométrie de masse (MS) et mobilité ionique (IM-MS) supramoléculaires pour la caractérisation fine de complexes protéine-ligand et d'assemblages protéiques hétérogènes de hauts poids moléculaires. L'optimisation instrumentale apportée à l'étude de ces systèmes, permet d'étendre le potentiel de ces deux approches en biologie structurale. Le criblage de complexes protéine-ligand permet ici une détermination de leurs propriétés d'interaction et la mise en évidence de subtils changements de conformation induits, pouvant être suivis au cours du temps. L'application de ce couplage à l'analyse de complexes multi-protéiques, réfractaires aux techniques conventionnelles, donne accès à la topologie de ces assemblages, facilitant la proposition de modèles structuraux. Enfin, l'apport récent de la haute résolution en MS native est ici illustré à travers l'étude de protéines complexes et hétérogènes : les anticorps thérapeutiques et leurs conjugués. Ces développements permettent de repousser certaines limites en MS native et IM-MS native, élargissant leurs perspectives d'application dans la recherche et l'industrie pharmaceutique.
Book Synopsis Développements méthodologiques en spectrométrie de masse et en mobilité ionique pour l'étude d'assemblages supramoléculaires en biologie by : Stéphanie Bécard
Download or read book Développements méthodologiques en spectrométrie de masse et en mobilité ionique pour l'étude d'assemblages supramoléculaires en biologie written by Stéphanie Bécard and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ce travail de thèse a été focalisé sur le développement d'approches MS et IM-MS supramoléculaires pour la caractérisation fine des interactions protéine/ligand et pour l'analyse de mélanges protéiques complexes. La maîtrise des instruments de MS supramoléculaire ainsi que les optimisations instrumentales et méthodologiques réalisées ont permis d'étendre le potentiel des approches MS et IM-MS pour la caractérisation d'assemblages moléculaires particulièrement complexes. Nous avons ainsi pu suivre la cinétique de formation de complexes protéine/ligand ainsi que les changements conformationnels qui y sont associés, montrant l'intérêt du couplage IM-MS en recherche pharmaceutique. De plus, ce travail a porté sur l'étude de complexes de très hauts poids moléculaires et l'évaluation de l'IM-MS pour obtenir des informations structurales sur ces complexes. Nous avons ainsi permis de repousser certaines limites de la MS et de placer cette technique au cœur des études de biologie structurale.
Book Synopsis Mass Spectrometry of Inorganic and Organometallic Compounds by : William Henderson
Download or read book Mass Spectrometry of Inorganic and Organometallic Compounds written by William Henderson and published by John Wiley & Sons. This book was released on 2005-07-15 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the first modern book to treat inorganic and organometallic mass spectrometry simultaneously. It is textbook and handbook in one; as a textbook it introduces the techniques and gives hints on how to apply the various techniques, as a handbook it lists all available ionization techniques for just about any given compound. The book also includes non-mathematical explanations of how modern MS instruments work Mass Spectrometry of Inorganic and Organometallic Compounds will inspire the synthetic inorganic and organometallic chemist with the confidence to apply some of the new techniques to their characterization problems.
Book Synopsis Comprehensive Environmental Mass Spectrometry by : Albert Lebedev
Download or read book Comprehensive Environmental Mass Spectrometry written by Albert Lebedev and published by ILM Publications. This book was released on 2012 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: "In full colour throughout, this book describes the power of mass spectrometry in resolving environmental issues, demonstrating how real-world complex problems can be solved in a simple and elegant way."--Worldcat.
Book Synopsis Organometallic Chemistry of the Transition Elements by : Florian P. Pruchnik
Download or read book Organometallic Chemistry of the Transition Elements written by Florian P. Pruchnik and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 767 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organometallic chemistry belongs to the most rapidly developing area of chemistry today. This is due to the fact that research dealing with the structure of compounds and chemical bonding has been greatly intensified in recent years. Additionally, organometallic compounds have been widely utilized in catalysis, organic synthesis, electronics, etc. This book is based on my lectures concerning basic organometallic chemistry for fourth and fifth year chemistry students and on my lectures concerning advanced organometallic chemistry and homogeneous catalysis for Ph.D. graduate students. Many recent developments in the area of organometallic chemistry as weIl as homogeneous catalysis are presented. Essential research results dealing with a given class of organometallic compounds are discussed briefly. Results of physicochemical research methods of various organometallic compounds as weIl as their synthesis, properties, structures, reactivities, and applications are discussed more thoroughly. The selection of tabulated data is arbitrary because, often, it has been impossible to avoid omissions. Nevertheless, these data can be very helpful in understanding properties of organometaIlic compounds and their reactivities. All physical data are given in SI units; the interatomic distances are given in pm units in figures and tables. I am indebted to Professor S. A. Duraj for translating and editing this book. His remarks, discussions, and suggestions are greatly appreciated. I also express gratitude to Virginia E. Duraj for editing and proofreading.
Download or read book Lipid Analysis written by W. W. Christie and published by Elsevier. This book was released on 2010-01-10 with total page 447 pages. Available in PDF, EPUB and Kindle. Book excerpt: This well-known and highly successful book was first published in 1973 and has been completely re-written in subsequent editions (published in 1982 and 2003). This new Fourth Edition has become necessary because of the pace of developments in mass spectrometry of intact lipids, which has given recognition of lipid analysis and ‘lipidomics’ as a distinct science. To bring the book up to date with these developments, author William W. Christie is joined by co-author Xianlin Han. Although devoting considerable space to mass spectrometry and lipidomics, Lipid analysis remains a practical guide, in one volume, to the complexities of the analysis of lipids. As in past editions, it is designed to act as a primary source, of value at the laboratory bench rather than residing on a library shelf. Lipid analysis deals with the isolation, separation, identification and structural analysis of glycerolipids, including triacylglycerols, phospholipids, sphingolipids, and the various hydrolysis products of these. The chapters follow a logical sequence from the extraction of lipids to the isolation and characterization of particular lipid classes and of molecular species of each, and to the mass spectrometric analysis of lipids and lipidomics. The new influence of mass spectrometry is due mainly to the development of electrospray ionization (ESI) and matrix-assisted laser desorption/ionization (MALDI). Most emphasis in this book is placed on ESI, which is enabling structural characterization of different lipid classes and the identification of novel lipids and their molecular species.
Book Synopsis Capillary Electrophoresis: Instrumentation and Operation by : Wim Kok
Download or read book Capillary Electrophoresis: Instrumentation and Operation written by Wim Kok and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this volume the general principles of capillary (zone) electrophoresis, the performance of this separation method to be expected, the instrumentation and techniques available and practical guidelines for the operaton of CE instruments will be discussed. The emphasis will be on the routine application of CE with commercially available instruments, but attention will also be paid to devolpments still in a research stage and their possible implications for the future.
Book Synopsis Dromadaires et chameaux, animaux laitiers by : Pascal Bonnet
Download or read book Dromadaires et chameaux, animaux laitiers written by Pascal Bonnet and published by Editions Quae. This book was released on 1998 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Faecal Sludge Management by : Linda Strande
Download or read book Faecal Sludge Management written by Linda Strande and published by IWA Publishing. This book was released on 2014-08-15 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is estimated that literally billions of residents in urban and peri-urban areas of Africa, Asia, and Latin America are served by onsite sanitation systems (e.g. various types of latrines and septic tanks). Until recently, the management of faecal sludge from these onsite systems has been grossly neglected, partially as a result of them being considered temporary solutions until sewer-based systems could be implemented. However, the perception of onsite or decentralized sanitation technologies for urban areas is gradually changing, and is increasingly being considered as long-term, sustainable options in urban areas, especially in low- and middle-income countries that lack sewer infrastructures. This is the first book dedicated to faecal sludge management. It compiles the current state of knowledge of the rapidly evolving field of faecal sludge management, and presents an integrated approach that includes technology, management, and planning based on Sandecs 20 years of experience in the field. Faecal Sludge Management: Systems Approach for Implementation and Operation addresses the organization of the entire faecal sludge management service chain, from the collection and transport of sludge, and the current state of knowledge of treatment options, to the final end use or disposal of treated sludge. The book also presents important factors to consider when evaluating and upscaling new treatment technology options. The book is designed for undergraduate and graduate students, and engineers and practitioners in the field who have some basic knowledge of environmental and/or wastewater engineering.
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.
Book Synopsis Arsenic in Drinking Water by : National Research Council
Download or read book Arsenic in Drinking Water written by National Research Council and published by National Academies Press. This book was released on 2001-11-26 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: Having safe drinking water is important to all Americans. The Environmental Protection Agency's decision in the summer of 2001 to delay implementing a new, more stringent standard for the maximum allowable level for arsenic in drinking water generated a great deal of criticism and controversy. Ultimately at issue were newer data on arsenic beyond those that had been examined in a 1999 National Research Council report. EPA asked the National Research Council for an evaluation of the new data available. The committee's analyses and conclusions are presented in Arsenic in Drinking Water: 2001 Update. New epidemiological studies are critically evaluated, as are new experimental data that provide information on how and at what level arsenic in drinking water can lead to cancer. The report's findings are consistent with those of the 1999 report that found high risks of cancer at the previous federal standard of 50 parts per billion. In fact, the new report concludes that men and women who consume water containing 3 parts per billion of arsenic daily have about a 1 in 1,000 increased risk of developing bladder or lung cancer during their lifetime.
Book Synopsis Aqueous Pretreatment of Plant Biomass for Biological and Chemical Conversion to Fuels and Chemicals by : Charles E. Wyman
Download or read book Aqueous Pretreatment of Plant Biomass for Biological and Chemical Conversion to Fuels and Chemicals written by Charles E. Wyman and published by John Wiley & Sons. This book was released on 2013-03-27 with total page 597 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plant biomass is attracting increasing attention as a sustainable resource for large-scale production of renewable fuels and chemicals. However, in order to successfully compete with petroleum, it is vital that biomass conversion processes are designed to minimize costs and maximize yields. Advances in pretreatment technology are critical in order to develop high-yielding, cost-competitive routes to renewable fuels and chemicals. Aqueous Pretreatment of Plant Biomass for Biological and Chemical Conversion to Fuels and Chemicals presents a comprehensive overview of the currently available aqueous pretreatment technologies for cellulosic biomass, highlighting the fundamental chemistry and biology of each method, key attributes and limitations, and opportunities for future advances. Topics covered include: • The importance of biomass conversion to fuels • The role of pretreatment in biological and chemical conversion of biomass • Composition and structure of biomass, and recalcitrance to conversion • Fundamentals of biomass pretreatment at low, neutral and high pH • Ionic liquid and organosolv pretreatments to fractionate biomass • Comparative data for application of leading pretreatments and effect of enzyme formulations • Physical and chemical features of pretreated biomass • Economics of pretreatment for biological processing • Methods of analysis and enzymatic conversion of biomass streams • Experimental pretreatment systems from multiwell plates to pilot plant operations This comprehensive reference book provides an authoritative source of information on the pretreatment of cellulosic biomass to aid those experienced in the field to access the most current information on the topic. It will also be invaluable to those entering the growing field of biomass conversion.
Book Synopsis Lehninger Principles of Biochemistry by : David L. Nelson
Download or read book Lehninger Principles of Biochemistry written by David L. Nelson and published by Macmillan. This book was released on 2008-02 with total page 1303 pages. Available in PDF, EPUB and Kindle. Book excerpt: Authors Dave Nelson and Mike Cox combine the best of the laboratory and best of the classroom, introducing exciting new developments while communicating basic principles of biochemistry.
Book Synopsis Capillary Zone Electrophoresis by : František Foret
Download or read book Capillary Zone Electrophoresis written by František Foret and published by . This book was released on 1993 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Jens O. L. Jørgensen Publisher :Karger Medical and Scientific Publishers ISBN 13 :3805579926 Total Pages :241 pages Book Rating :4.8/5 (55 download)
Book Synopsis Growth Hormone Deficiency in Adults by : Jens O. L. Jørgensen
Download or read book Growth Hormone Deficiency in Adults written by Jens O. L. Jørgensen and published by Karger Medical and Scientific Publishers. This book was released on 2005-01-01 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: It has been known for over 40 years that GH-deficient-children benefit from replacement with the hormone. But GH, essential for longitudinal growth, also plays a role after completion of final height. With the introduction of biosynthetic human GH 20 years ago, the use of GH was no longer restricted to severe growth retardation in hypopituitary children. This book will take the reader behind the myths of GH and into the real world of clinical endocrinology. The contributions stem from recognized clinicians and scientists who have been working in the field for decades. The contents encompass traditional end points of GH therapy such as body composition, bone biology and physical performance. Attention is also devoted to diagnostic aspects and side effects. Additional features range from clinical epidemiology to quality of life, and novel areas such as the impact of traumatic brain injury on pituitary function are also covered. The present volume of Frontiers of Hormone Research is essential reading for health care professionals interested in clinical endocrinology and GH.
