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Sugar chains (glycans) are often attached to proteins and lipids and have multiple roles in the organization and function of all organisms. "Essentials of Glycobiology" describes their biogenesis and function and offers a useful gateway to the understanding of glycans.
A new focus on glycoscience, a field that explores the structures and functions of sugars, promises great advances in areas as diverse as medicine, energy generation, and materials science, this report finds. Glycans-also known as carbohydrates, saccharides, or simply as sugars-play central roles in many biological processes and have properties useful in an array of applications. However, glycans have received little attention from the research community due to a lack of tools to probe their often complex structures and properties. Transforming Glycoscience: A Roadmap for the Future presents a roadmap for transforming glycoscience from a field dominated by specialists to a widely studied and integrated discipline, which could lead to a more complete understanding of glycans and help solve key challenges in diverse fields.
This book provides current glycoinformatics methods and protocols used to support the determination of carbohydrate structures in biological samples as well as carbohydrate structure databases, the interaction of carbohydrates with proteins, and theoretical and experimental methods to study their three-dimensional structure and dynamics. Glycoinformatics explores this recently emerged field, which has come into being in order to address the needs of encoding, storing, and analyzing carbohydrate ‘sequences’ and their taxonomy using computers. Written in the highly successful Methods in Molecular Biology series format, chapters contain the kind of detailed description and key implementation advice to ensure successful results. Authoritative and timely, Glycoinformatics demonstrates the progress that has been achieved in glycoinformatics, which indicates that it is no longer a niche subject covered by only a few scientists but is truly coming of age.
This book presents the latest breakthrough results in glycobiology regarding the roles of glycans in relation to quality control and transport of protein, the immune system, viral infection, stem cells, the neural system, and various diseases such as cancer, diabetes, chronic obstructive pulmonary disease, muscular dystrophy, and schizophrenia. Although glycoscience has long been regarded as a very specialized field with no simple analytical method, the recent explosive progress in research continues to provide limitless evidence that glycan chains are the key component in various biological phenomena. Cell surface glycans, for example, change with developmental stages or environmental conditions and thus represent a “face” of the cell that is utilized for identification of iPS and ES cells and as biomarkers in diagnosis or detection of cancer. This book comprises 17 chapters, each of which poses outstanding “glyco-related” questions enabling non-specialists to have a clearer idea about what the future direction for further investigation of glycans in their own research fields will be. Also including basic information to understand the nature of glycans, this title serves as an excellent “textbook” for researchers in diverse research fields who are not familiar with, but nevertheless interested in, glycan chains or sugar chains.
This volume provides a comprehensive understanding of the enigmatic identity of the glycome, a complex but important area of research that has been largely ignored due to its complexity. The authors thoroughly deal with almost all aspects of the glycome, i.e., elucidation of the glycan identity enigma and its role in regulation of the cellular process, and in disease etiology. The book bridges the knowledge gap in understanding the glycome, from being a cell signature to its applications in disease etiology. In addition, it details many of the major insights regarding the possible role of the glycome in various diseases as a therapeutic marker. The book systematically covers the major aspects of the glycome, including the significance of substituting the diverse monosaccharide units to glycoproteins, the role of glycans in disease pathologies, and the challenges and advances in glycobiology. The authors stress the significance and huge encoding power of carbohydrates as well as provide helpful insights in framing the bigger picture. The Glycome: Understanding the Diversity and Complexity of Glycobiology details state-of-the-art developments and emerging challenges of glycome biology, which are going to be key areas of future research, not only in the glycobiology field but also in pharmaceutics.
A reader friendly overview of the structure and functional relevance of natural glycosylation and its cognate proteins (lectins), this book is also one of the few books to cover their role in health and disease. Edited by one of the pioneering experts in the field and written by a team of renowned researchers this resource is a perfect introduction for all students in life and medical sciences, biochemistry, chemistry and pharmacy. Website: WWW.WILEY-VCH.DE/HOME/THESUGARCODE
Glycome: The Hidden Code in BiologyDescription: "Glycome: The Hidden Code in Biology" addresses one of the most fundamental questions in biology today. The book targets readers with little expertise as well as the experts in Glycoscience. Sugars are electroneutral. However, linking sugars to sugars, or attaching sugars to proteins or lipids changes the structural and functional identities of the glycoconjugate, and enables to form cellular networks of 4Gs [i.e., glycoproteins (N-linked or O-linked), glycosphingolipids, proteoglycans and glycosaminoglycans (GAGs)]. These glycans (i) support growth, proliferation and differentiation of cells and tissues; (ii) protect cells from foreign invasions including bacteria, viruses, parasites as well as from changes in the extracellular environment; (iii) act as biomarkers and participate in transmembrane signaling. The glycans are not ubiquitous but they are tissue/species specific.Structurally, the glycans are diverse, and form linear to highly branched structures. This diversity is present not only across the species but also within cells of the same species, i.e., the glycoforms. Nuclear magnetic resonance (NMR) and mass spectrometric (MS) studies (i.e., Glycomics) have evaluated and contributed significantly in delineating the structural diversity of glycans. Glycomics, in fact, has helped in overcoming many earlier technological barriers which were otherwise very laborious and time consuming. Plant lectins being carbohydrate binding proteins with a high degree of sugar specificity have been useful tools to characterize the carbohydrate structures they recognize. The glycan structures complement their biosynthetic processes. Because of the highly compartmentalized nature of the process, the glycans move between compartments during their assembly. This is believed to be mediated by vesicular structures but the participation of exosomes cannot be ruled out. A large number of genetic disorders [gangliosidosis, mucopolysaccharidoses, congenital disorders of glycosylation (CDG)] are due to abnormal glycan synthesis or degradation. Disproportionate expression of glycans is also found in diseases like cancer, neurological disorders, diabetes, metabolic syndromes, and infection. This raises questions about the regulatory principle(s) in glycan biosynthesis. There is no template for glycan chain synthesis, elongation, processing or termination. The cells/tissues follow a highly conserved mechanism. The assumption is glycosylation uses donor and acceptor interactions as the driving force. Increased or decreased synthesis of glycans in response to the environmental change influence cell function, i.e., growth, survival or death favor of a "push-pull" hypothesis. In the absence of a genetic code for sugars, the assembly as well as the processing of glycan chains are controlled by the Glycome. Unlike the genome, the Glycome is hidden for the normal eye but its communication skills with the cellular microenvironment and genome for glycan synthesis and degradation are enormous. Seventeen chapters in the book are dedicated to walk the readers through the diversities of the Glycome. The authors have used mammalian, microbial and plant systems to achieve the desired goal.
Glycans are essential components of all living things because they function as key elements of cellular membranes and extracellular spaces by mediating cell-cell communication, transduction pathways, and cellular development, function, and survival. Because glycans are secondary gene products that depend on the availability of sub-cellular enzymes for synthesis, research on their structure, synthesis, and biological significance has lagged behind that of DNA and proteins due to both a lack of appreciation of their importance and the slow pace at which tools are being developed to study them. In this thesis, three projects focus on the development, application, and exploration of tools for glycan characterization. The first project resulted in the successful optimization of an analytical method to isolate and characterize O-linked glycans, on which relatively few research projects focus because of the limited availability of tools to isolate them and the need for specific analytical equipment to properly characterize them. Using this optimized method, the O-linked glycans of bovine mucin and fetuin were successfully profiled, and the analysis of the former provided the motivation for a second project focused on the significance of goblet cells and mucins in influenza infection. This project explored the potential benefits of a glycoprotein direct binding assay as a way to obtain quantitative information about lectin and influenza hemagglutinin specificities. Using mucins adsorbed to a polystyrene plate, it was possible to obtain quantitative binding constants for two commonly used lectins. The last project focused on the isolation and characterization of the cell surface N-linked glycans from chicken erythrocytes, turkey erythrocytes, and human tracheal epithelial (HTE) cells. Analysis of these cell types is warranted due to their importance as model systems to study influenza infection. The results of this project provide a context for future questions about the relevance of the erythrocyte model system for studying influenza binding specificities. All of these projects reiterate the importance of the study of glycobiology by showing how both the development and application of tools to study glycans can provide in new and interesting information about pathological processes related to human health and disease.
Advances in Cancer Research provides invaluable information on the exciting and fast-moving field of cancer research. Here, once again, outstanding and original reviews are presented on a variety of topics. - Provides information on cancer research - Outstanding and original reviews - Suitable for researchers and students