Download or read book Purification and Partial Kinetic and Physical Characterization of Two NADP specific Glutamate Dehydrogenase Isoenzymes and Their Protein Precursors and Measurement of the Patterns of Accumulation and Rates of Degradation of Their Nonidentical Subunits in Synchronized Cells of Chlorella Cultured in Different Concentrations of Ammonia written by Newell F. Bascomb and published by . This book was released on 1985 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two ammonium-inducible, chloroplast-localized, NADP-specif ic glutamate dehydrogenases were purified from Chlorella sorokiniana . They were homopolymers of either alpha or beta subunits with molecular weights of 55,500 and 53,000, respectively. Purification was achieved by gel filtration (Sephacryl S-300), fast protein liquid chromatography (Pharmacia, Mono Q column), and substrate affinity chromatography (Pharmacia, NADP-Sepharose 4B, Type 4). These isoenzymes were separated by their differential binding to the substrate affinity column. Peptide mapping of purified alpha and beta subunits showed them to have a high degree of sequence homology. Because the ammonia K of alpha holoenzyme was sensitive to changes in NADPH concentration, its K ranged from 0.02 mM to 3.5 mM. With m changes in NADPH concentration, the aminonia K^ of beta holoenzyme remained constant at 70 mM. By use of SDS slab-gel electrophoresis and a Western blot/immunodetection procedure, patterns of accumulation of alpha and beta subunits (in their holoenzyme) were measured in cells cultured in media, containing different concentrations of ammonia. Pulse-chase experiments with Ssulfate were performed to measure the rates of degradation of the two isoenzymes. When the culture medium contained 2 mM ammonia or lower, cells accumulated only the alpha holoenzyme. Above 2 mM ammonia, cells contained both isoenzymes; however, their patterns of accumulation and rates of degradation were very different. The physiological role of alpha and beta holoenzymes appears to be ammonia assimilation at low and high external ammonia concentrations, respectively. From in vitro translation studies with total cellular poly(A)"^ RNA, isolated from cells engaged in synthesis of alpha or beta holoenzymes or both, it was concluded that alpha and beta subunits have protein precursor(s) of identical molecular weight (M = 58,500). When the putative protein-precursor (s) were incubated in vitro, with cell-free extracts from Chlorella cells, they were processed to proteins the size of alpha and beta subunits. From in vitro processing experiments, it was concluded that either two different precursors of the same molecular weight are specifically processed to give alpha and beta subunits, or the specificity or type of processing-enzyme changes to give the two subunits from a single precursor -protein.
Download or read book Dissertation Abstracts International written by and published by . This book was released on 1986 with total page 788 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1985 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book INIS Atomindex written by and published by . This book was released on 1987 with total page 1214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Neural Surface Antigens written by Jan Pruszak and published by Academic Press. This book was released on 2015-03-23 with total page 253 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neural Surface Antigens: From Basic Biology towards Biomedical Applications focuses on the functionalrole of surface molecules in neural development, stem cell research, and translational biomedical paradigms.With an emphasis on human and rodent model systems, this reference covers fundamentals of neural stemcell biology and flow cytometric methodology. Addressing cell biologists as well as clinicians working in theneurosciences, the book was conceived by an international panel of experts to cover a vast array of particularsurface antigen families and subtypes. It provides insight into the basic biology and functional mechanisms ofneural cell surface signaling molecules influencing mammalian development, regeneration, and treatments. - Introduces early phase clinical trials of neural stem cells - Outlines characterization of surface molecule expression and methods for isolation which open unprecedented opportunities for functional study, quantitation & diagnostics - Highlights the role of stem cells in neural surface antigen and biomarker analysis and applications
Download or read book Protein Trafficking in Neurons written by Andrew J. Bean and published by Elsevier. This book was released on 2006-10-27 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: The efficient delivery of cellular constituents to their proper location is of fundamental importance for all cells and is of particular interest to neuroscientists, because of the unique functions and complex architecture of neurons. Protein Trafficking in Neurons examines mechanisms of protein trafficking and the role of trafficking in neuronal functioning from development to plasticity to disease. The book is divided into seven sections that review mechanisms of protein transport, the role of protein trafficking in synapse formation, exo- and endocytosis, transport of receptors, trafficking of ion channels and transporters, comparison of trafficking mechanisms in neuronal vs. non-neuronal cell types, and the relationship between trafficking and neuronal diseases such as Alzheimer's, Huntington's and Prion Diseases. - Provides a comprehensive examination of membrane/protein movement in neuronal function - Sections on synapse development, synaptic transmission, and the role of trafficking in neurological disease - Includes a focus on Molecular Mechanisms - Illustrated with color summary pictures - The only book examining protein trafficking and its functional implications, written by leaders in the field
Download or read book Herbicide Classes in Development written by Peter Böger and published by Springer. This book was released on 2011-09-23 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemical pest control is in use in practically every country in the world since agrochemicals play a decisive role in ensuring food supply and protection against damage by pests, insects and pathogenic fungi. Particularly in the half century since World War II, food production has risen dramatically in most parts of the world. In the last 20 years, the yield of major crops has roughly doubled in Western agriculture and there is still the potential for further achievements, particularly in the developing countries. The world's cereal and rice production, now more than 2 billion tons/year, has to increase by 2. 4% annually to cope with the rising food demand caused mainly by the growing population and improvement of living standards in most of the developing countries. Such a demand for food has to be achieved by higher yields from the restricted arable land already in use. Global farm land resources are about 1. 4 billion ha, of which 1. 2 billion ha is cultivated with major crops. Experts agree that a future substantial addition of new produc tive areas is unlikely. Those with a high yield potential are already in use; new fields with a lower output may possibly be obtained by cultivation of arid or cold areas. More recently, new areas of large-scale farmland have been devel oped in tropical regions of Latin America, primarily in Argentina and Brazil, at the cost of the destruction of tropical rain forest.
Download or read book Chromatin Signaling and Diseases written by Olivier Binda and published by Academic Press. This book was released on 2016-08-06 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chromatin Signaling and Diseases covers the molecular mechanisms that regulate gene expression, which govern everything from embryonic development, growth, and human pathologies associated with aging, such as cancer. This book helps researchers learn about or keep up with the quickly expanding field of chromatin signaling. After reading this book, clinicians will be more capable of explaining the mechanisms of gene expression regulation to their patients to reassure them about new drug developments that target chromatin signaling mechanisms. For example, several epigenetic drugs that act on chromatin signaling factors are in clinical trials or even approved for usage in cancer treatments, Alzheimer's, and Huntington's diseases. Other epigenetic drugs are in development to regulate various class of chromatin signaling factors. To keep up with this changing landscape, clinicians and doctors will need to stay familiar with genetic advances that translate to clinical practice, such as chromatin signaling. Although sequencing of the human genome was completed over a decade ago and its structure investigated for nearly half a century, molecular mechanisms that regulate gene expression remain largely misunderstood. An emerging concept called chromatin signaling proposes that small protein domains recognize chemical modifications on the genome scaffolding histone proteins, facilitating the nucleation of enzymatic complexes at specific loci that then open up or shut down the access to genetic information, thereby regulating gene expression. The addition and removal of chemical modifications on histones, as well as the proteins that specifically recognize these, is reviewed in Chromatin Signaling and Diseases. Finally, the impact of gene expression defects associated with malfunctioning chromatin signaling is also explored. - Explains molecular mechanisms that regulate gene expression, which governs everything from embryonic development, growth, and human pathologies associated with aging - Educates clinicians and researchers about chromatin signaling, a molecular mechanism that is changing our understanding of human pathology - Explores the addition and removal of chemical modifications on histones, the proteins that specifically recognize these, and the impact of gene expression defects associated with malfunctioning chromatin signaling - Helps researchers learn about the quickly expanding field of chromatin signaling
Download or read book Cell Biology Genetics Molecular Biology Evolution and Ecology written by PS Verma | VK Agarwal and published by S. Chand Publishing. This book was released on 2004-09 with total page 1298 pages. Available in PDF, EPUB and Kindle. Book excerpt: The revised edition of this bestselling textbook provides latest and detailed account of vital topics in biology, namely, Cell Biology, Genetics, Molecular Biology, Evolution and Ecology . The treatment is very exhaustive as the book devotes exclusive parts to each topic, yet in a simple, lucid and concise manner. Simplified and well labelled diagrams and pictures make the subject interesting and easy to understand. It is developed for students of B.Sc. Pass and Honours courses, primarily. However, it is equally useful for students of M.Sc. Zoology, Botany and Biosciences. Aspirants of medical entrance and civil services examinations would also find the book extremely useful.
Download or read book Plant Transcription Factors written by Daniel H Gonzalez and published by Academic Press. This book was released on 2015-07-07 with total page 435 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plant Transcription Factors: Evolutionary, Structural and Functional Aspects is the only publication that provides a comprehensive compilation of plant transcription factor families and their complex roles in plant biology. While the majority of information about transcription factors is based on mammalian systems, this publication discusses plant transcription factors, including the important aspects and unifying themes to understanding transcription factors and the important roles of particular families in specific processes. - Provides an entry point for transcription factor literature - Offers compilation of information into one single resource for rapid consultation on different plant transcription factor features - Integrates the knowledge about different transcription factors, along with cross-referencing - Provides information on the unique aspects surrounding plant transcription factors
Download or read book Oxygenic Photosynthesis The Light Reactions written by Donald R. Ort and published by Springer Science & Business Media. This book was released on 2006-04-11 with total page 681 pages. Available in PDF, EPUB and Kindle. Book excerpt: Structure and function of the components of the photosynthetic apparatus and the molecular biology of these components have become the dominant themes in advances in our understanding of the light reactions of oxygenic photosynthesis. Oxygenic Photosynthesis: The Light Reactions presents our current understanding of these reactions in thylakoid membranes. Topics covered include the photosystems, the cytochrome b6-f complex, plastocyanin, ferredoxin, FNR, light-harvesting complexes, and the coupling factor. Chapters are also devoted to the structure of thylakoid membranes, their lipid composition, and their biogenesis. Updates on the crystal structures of cytochrome f, ATP synthase and photosystem I are presented and a section on molecular biology and evolution of the photosynthetic apparatus is also included. The chapters in this book provide a comprehensive overview of photosynthetic reactions in eukaryotic thylakoids. The book is intended for a wide audience, including graduate students and researchers active in this field, as well as those individuals who have interests in plant biochemistry and molecular biology or plant physiology.
Download or read book Ccn Proteins A New Family Of Cell Growth And Differentiation Regulators written by Masaharu Takigawa and published by World Scientific. This book was released on 2005-06-17 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: The CCN Proteins are thought to play key roles in the biology of normal cell, tissue, organ, and body, and altered expression of CCN proteins is associated with several pathologies, including fibrosis and cancer. Because of its importance, the CCN field is expanding at a fast pace. Research articles in this field have recently increased logarithmically, and a book that is up-to-date, comprehensive, authoritative and affords insights into the biological roles of CCN proteins, is timely.CCN Protein: A New Family of Cell Growth and Differentiation Regulators presents the most recent progress in the field of CCN proteins, a new family of secretory signaling molecules that are involved in several fundamental biological progress. These proteins share a unique multimodular organization and present a partial identity with four families of regulatory proteins controling growth and development. The book covers the roles of CCN proteins in the control of cell proliferation and differentiation during normal development, wound repair, chondrogenesis and bone development, angiogenesis, tissue regeneration, fibrosis, renal diseases and cancer development.
Download or read book Channelopathies written by F. Lehmann-Horn and published by Elsevier. This book was released on 2000-11-16 with total page 383 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes human hereditary ion channel diseases of voltage- and ligand-gated ion channels covering the diverse fields of medicine myology, neurology, cardiology, and nephrology requiring a wide and interdisciplinary readership. Interesting parallels in pathogenetic mechanisms of disease are especially emphasized to interest even highly specialized readers in entities outside of their fields. Each author has written an objective overview of his or her particular subject in a way that should allow the reader within a short period of time to obtain a comprehensive picture of the present state of art.
Download or read book Epigenetics and Dermatology written by Qianjin Lu and published by Academic Press. This book was released on 2015-02-16 with total page 525 pages. Available in PDF, EPUB and Kindle. Book excerpt: Epigenetics and Dermatology explores the role of epigenetics in the pathogenesis of autoimmune-related skin diseases and skin cancer. Leading contributors cover common and uncommon skin conditions in which extensive epigenetic research has been done. They explain how environmental exposures (chemicals, drugs, sunlight, diet, stress, smoking, infection, etc.) in all stages of life (from a fetus in-utero to an elderly person) may result in epigenetic changes that lead to development of some skin diseases in life. They also discuss the possibilities of new and emergent epigenetic treatments which are gradually being adopted in management of various skin diseases. Chapters follow a conventional structure, covering fundamental biology of the disease condition, etiology and pathogenesis, diagnosis, commonly available treatments, and epigenetic therapy where applicable. Discusses the basic biology of skin diseases and skin cancers induced or aggravated by aberrant epigenetic changes Evaluates how to approach autoimmune-related skin diseases from a therapeutic perspective using the wealth of emergent epigenetic clinical trials Offers a coherent and structured table of contents with basic epigenetic biology followed by discussion of the spectrum of rheumatologic through neoplastic skin diseases, finally ending with a discourse on epigenetic therapy
Download or read book Electron Paramagnetic Resonance Investigations of Biological Systems by Using Spin Labels Spin Probes and Intrinsic Metal Ions Part A written by and published by Academic Press. This book was released on 2015-10-05 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electron Paramagnetic Resonance Investigations of Biological Systems by Using Spin Labels, Spin Probes, and Intrinsic Metal Ions Part A & B, are the latest volumes in the Methods in Enzymology series, continuing the legacy of this premier serial with quality chapters authored by leaders in the field. This volume covers research methods centered on the use of Electron Paramagnetic Resonance (EPR) techniques to study biological structure and function.
Download or read book Targeting Cell Survival Pathways to Enhance Response to Chemotherapy written by and published by Academic Press. This book was released on 2018-03-28 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: Targeting Cell Survival Pathways to Enhance Response to Chemotherapy encompasses recently developed molecular targeting agents and approaches that suppress cell survival signaling. Cell survival signaling attenuates the effectiveness of conventional chemotherapy and numerous mechanisms have been described, and continue to be described, which contribute to cell survival in the face of chemotherapy treatment. Key pathways leading to chemoresistance emanate from growth factor receptors, PI3K, STAT3, anti-apoptotic Bcl-2 family members, autophagy, and the DNA damage response pathway. New advances have underscored the potential of targeting each of these cell survival mechanisms to improve responsiveness to chemotherapy. This book reviews these recent advances and provides a foundational background and hints of new opportunities for basic, translational, and clinical investigators focused on improving therapeutic responses to chemotherapy. - Presents cutting-edge agents and approaches with proved success in different model systems that can be translated to a different type of cancer - Brings updated information to be used to propose new clinical trials investigating innovative strategies for improving responses to chemotherapy - Provides mechanistic details to help guide the design of laboratory studies associated with clinical trials
Download or read book The Chloroplast written by Anna Stina Sandelius and published by Springer Science & Business Media. This book was released on 2008-12-11 with total page 307 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chloroplasts are vital for life as we know it. At the leaf cell level, it is common knowledge that a chloroplast interacts with its surroundings – but this knowledge is often limited to the benefits of oxygenic photosynthesis and that chloroplasts provide reduced carbon, nitrogen and sulphur. This book presents the intricate interplay between chloroplasts and their immediate and more distant environments. The topic is explored in chapters covering aspects of evolution, the chloroplast/cytoplasm barrier, transport, division, motility and bidirectional signalling. Taken together, the contributed chapters provide an exciting insight into the complexity of how chloroplast functions are related to cellular and plant-level functions. The recent rapid advances in the presented research areas, largely made possible by the development of molecular techniques and genetic screens of an increasing number of plant model systems, make this interaction a topical issue.
