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Glycopeptides and Glycoproteins

Glycopeptides and Glycoproteins PDF Author: Valentin Wittmann
Publisher: Springer Science & Business Media
ISBN: 3540367608
Category : Science
Languages : en
Pages : 271

Book Description
In the last 50 years molecular biology was dominated by the exploration of proteins and nucleic acids. Beside their role in energy metabolism, oligos- charides,which represent thethirdclass ofbiomacromolecules, have received less attention. Today it is well established that oligosaccharides are involved in many important biologicalregulation and recognition processes fromp- tein folding to cell-cell communication. Glycosylation of proteins is the most complexformofco-andposttranslationalmodi'cation. Thedeterminationof structure-function relationships, however, remains dif'cult due to the mic- heterogeneity of glycoproteins that exist in many different glycoforms. Thus chemical synthesis of glycoproteins and glycopeptides with de'ned glycan structures plays a pivotal role for the detailed determination of the role of protein glycosylation. This topic is covered by the ?rst two chapters of this bookdealingwiththechemicaland enzymatic synthesis ofglycopeptides and glycoproteins. The third chapter describes the construction of glycopeptide andglycoproteinmimetics containingnon-naturalstructuralelements. These so-calledneoglycopeptidesandneoglycoproteins,respectively,canprovide- sight on the importance of distinct structural elements on biological activity andmayhaveimproved propertiessuchasanincreased stability. Theappli- tion of synthetic glycopeptides, in many cases at the clinical level, as vaccines forbothcancerandHIVisthesubjectofthefourthchapter. Glycopeptide antibiotics are glycosylated secondary metabolites of bacteria and fungi that are synthesized by non-ribosomal peptide synthetases. Some of them serve as antibiotics of last resort in the treatment of nosocomial infections with enterococci and methicillin-resistant Staphylococcus aureus (MRSA) strains. Their structure, biosynthesis, and mode of action are summarized in the ?fth chapter. The last chapter covers current methods for the determination of high-resolution structures of glycopeptides and glycoproteins mainly based onNMRspectroscopy, X-raycrystallography,and molecular modeling.

Glycopeptides and Glycoproteins

Glycopeptides and Glycoproteins PDF Author: Valentin Wittmann
Publisher: Springer Science & Business Media
ISBN: 3540367608
Category : Science
Languages : en
Pages : 271

Book Description
In the last 50 years molecular biology was dominated by the exploration of proteins and nucleic acids. Beside their role in energy metabolism, oligos- charides,which represent thethirdclass ofbiomacromolecules, have received less attention. Today it is well established that oligosaccharides are involved in many important biologicalregulation and recognition processes fromp- tein folding to cell-cell communication. Glycosylation of proteins is the most complexformofco-andposttranslationalmodi'cation. Thedeterminationof structure-function relationships, however, remains dif'cult due to the mic- heterogeneity of glycoproteins that exist in many different glycoforms. Thus chemical synthesis of glycoproteins and glycopeptides with de'ned glycan structures plays a pivotal role for the detailed determination of the role of protein glycosylation. This topic is covered by the ?rst two chapters of this bookdealingwiththechemicaland enzymatic synthesis ofglycopeptides and glycoproteins. The third chapter describes the construction of glycopeptide andglycoproteinmimetics containingnon-naturalstructuralelements. These so-calledneoglycopeptidesandneoglycoproteins,respectively,canprovide- sight on the importance of distinct structural elements on biological activity andmayhaveimproved propertiessuchasanincreased stability. Theappli- tion of synthetic glycopeptides, in many cases at the clinical level, as vaccines forbothcancerandHIVisthesubjectofthefourthchapter. Glycopeptide antibiotics are glycosylated secondary metabolites of bacteria and fungi that are synthesized by non-ribosomal peptide synthetases. Some of them serve as antibiotics of last resort in the treatment of nosocomial infections with enterococci and methicillin-resistant Staphylococcus aureus (MRSA) strains. Their structure, biosynthesis, and mode of action are summarized in the ?fth chapter. The last chapter covers current methods for the determination of high-resolution structures of glycopeptides and glycoproteins mainly based onNMRspectroscopy, X-raycrystallography,and molecular modeling.

Amino Acids, Peptides and Proteins

Amino Acids, Peptides and Proteins PDF Author: J S Davies
Publisher: Royal Society of Chemistry
ISBN: 1847558453
Category : Science
Languages : en
Pages : 347

Book Description
In an ever-increasing domain of activity, Amino Acids, Peptides and Proteins provides an annual compilation of the world's research effort into this important area of biological chemistry. Comprising a comprehensive review of significant developments at this biology/chemistry interface, each volume opens with an overview of amino acids and their applications. Work on peptides is reviewed over several chapters, ranging from current trends in their synthesis and conformational and structural analysis, to peptidomimetics and the discovery of peptide-related molecules in nature. The application of advanced techniques in structural elucidation is incorporated into all chapters, whilst periodic chapters on metal complexes of amino acids, peptides and beta-lactams extend the scope of coverage. Efficient searching of specialist topics is facilitated by the sub-division of chapters into discrete subject areas, allowing annual trends to be monitored. All researchers in the pharmaceutical and allied industries, and at the biology/chemistry interface in academia will find this an indispensable reference source. Volume 36 covers literature published during 2003.

Fragment-based Approaches in Drug Discovery

Fragment-based Approaches in Drug Discovery PDF Author: Wolfgang Jahnke
Publisher: John Wiley & Sons
ISBN: 3527608605
Category : Science
Languages : en
Pages : 391

Book Description
This first systematic summary of the impact of fragment-based approaches on the drug development process provides essential information that was previously unavailable. Adopting a practice-oriented approach, this represents a book by professionals for professionals, tailor-made for drug developers in the pharma and biotech sector who need to keep up-to-date on the latest technologies and strategies in pharmaceutical ligand design. The book is clearly divided into three sections on ligand design, spectroscopic techniques, and screening and drug discovery, backed by numerous case studies.

Click Chemistry in Glycoscience

Click Chemistry in Glycoscience PDF Author: Zbigniew J. Witczak
Publisher: John Wiley & Sons
ISBN: 1118275330
Category : Science
Languages : en
Pages : 402

Book Description
Lays the foundation for new methods and applications of carbohydrate click chemistry Introduced by K. Barry Sharpless of The Scripps Research Institute in 2001, click chemistry mimics nature, giving researchers the tools needed to generate new substances quickly and reliably by joining small units together. With contributions from more than thirty pioneering researchers in the field, this text explores the many promising applications of click chemistry in glycoscience. Readers will learn both the basic concepts of carbohydrate click chemistry as well as its many biomedical applications, including synthetic antigens, analogs of cell-surface receptors, immobilized enzymes, targeted drug delivery systems, and multivalent cancer vaccines. Click Chemistry in Glycoscience examines a broad range of methodologies and strategies that have emerged from this rapidly evolving field. Each chapter describes new approaches, ideas, consequences, and applications resulting from the introduction of click processes. Divided into four sections, the book covers: Click chemistry strategies and decoupling Thio-click chemistry of carbohydrates Carbohydrate click chemistry for novel synthetic targets Carbohydrate click chemistry in biomedical sciences Thoroughly researched, the book reflects the most recent findings published in the literature. Diagrams and figures throughout the book enable readers to more easily grasp complex concepts and reaction processes. At the end of each chapter, references lead to the primary literature for further investigation of individual topics. The application of click chemistry to carbohydrates has tremendous implications for research. With this book as their guide, researchers have a solid foundation from which they can develop new methods and applications of carbohydrate click chemistry, including new carbohydrate-based therapeutics.

Amino Acids, Peptides and Proteins in Organic Chemistry, Protection Reactions, Medicinal Chemistry, Combinatorial Synthesis

Amino Acids, Peptides and Proteins in Organic Chemistry, Protection Reactions, Medicinal Chemistry, Combinatorial Synthesis PDF Author:
Publisher: John Wiley & Sons
ISBN: 3527641572
Category : Science
Languages : en
Pages : 541

Book Description
This is the fourth of five books in the Amino Acids, Peptides and Proteins in Organic Synthesis series. Closing a gap in the literature, this is the only series to cover this important topic in organic and biochemistry. Drawing upon the combined expertise of the international "who's who" in amino acid research, these volumes represent a real benchmark for amino acid chemistry, providing a comprehensive discussion of the occurrence, uses and applications of amino acids and, by extension, their polymeric forms, peptides and proteins. The practical value of each volume is heightened by the inclusion of experimental procedures. The 5 volumes cover the following topics: Volume 1: Origins and Synthesis of Amino Acids Volume 2: Modified Amino Acids, Organocatalysis and Enzymes Volume 3: Building Blocks, Catalysis and Coupling Chemistry Volume 4: Protection Reactions, Medicinal Chemistry, Combinatorial Synthesis Volume 5: Analysis and Function of Amino Acids and Peptides The fourth volume in this series is structured in three main sections. The first section is about protection reactions and amino acid based peptidomimetics. The second, and most extensive, part is devoted to the medicinal chemistry of amino acids. It includes, among others, the chemistry of alpha- and beta amino acids, peptide drugs, and advances in N- and O-glycopeptide synthesis. The final part deals with amino acids in combinatorial synthesis. Methods, such as phage display, library peptide synthesis, and computational design are described. Originally planned as a six volume series, Amino Acids, Peptides and Proteins in Organic Chemistry now completes with five volumes but remains comprehensive in both scope and coverage. Further information about the 5 Volume Set and purchasing details can be viewed here.

Advances in Organic Synthesis

Advances in Organic Synthesis PDF Author: Atta-ur-Rahman
Publisher: Bentham Science Publishers
ISBN: 1681087472
Category : Science
Languages : en
Pages : 317

Book Description
Advances in Organic Synthesis is a book series devoted to the latest advances in synthetic approaches towards challenging structures. The series presents comprehensive reviews written by eminent authorities on different synthetic approaches to selected target molecules and new methods developed to achieve specific synthetic transformations or optimal product yields. Advances in Organic Synthesis is essential for all organic chemists in academia and the industry who wish to keep abreast of rapid and important developments in the field. This volume presents the following reviews: o Recent Progress on Asymmetric Synthesis of Chiral Flavanones, Chromanones, and Chromenes o Supramolecular Chemistry of Modified Amino Acids and Short Peptides o The Use of Nanocatalysts in the Synthesis of Heterocycles: A Contemporary Approach o Synthesis and Applications of 1,2,3-Triazoles o Ring C–H Functionalization of Aromatic N-Oxides.

Organic Azides

Organic Azides PDF Author: Stefan Bräse
Publisher: John Wiley & Sons
ISBN: 0470682523
Category : Science
Languages : en
Pages : 536

Book Description
Most current state-of-the-art overview of this important class of compounds, encompassing many new and emerging applications The number of articles on organic azides continues to increase tremendously; on average, there are more than 1000 new publications a year Covers basic chemistry as well as state-of-the-art applications in life science and materials science World-ranked authors describe their own research in the wider context of azide chemistry Includes a chapter on safe synthesis and handling (azides can decompose explosively)

Non-Conventional Synthesis

Non-Conventional Synthesis PDF Author: György Keglevich
Publisher: Walter de Gruyter GmbH & Co KG
ISBN: 3110980185
Category : Science
Languages : en
Pages : 584

Book Description
Non-conventional synthetic methods may provide new and green methods for the preparation of bioactive heterocycles. These methods, such as microwave and ultrasound assisted synthesis, biocatalysis, photochemistry and electrosynthesis use less energy and may produce less waste to get the desired products when compared to traditional methods. This book explores the use of these methods when synthesizing various biologically relevant heterocyclic scaffolds. THE SERIES: GREEN BIOACTIVE HETEROCYCLES Heterocycles are a widely utilized group of molecules as they often contain bioactivity that is useful in drug development, agriculture, and other applications. However, their synthesis remains challenging with diffi cult to control functional groups. With a greater focus on sustainable synthesis practices, there is a need to develop greener synthetic methods for the synthesis of structurally diverse bioactive heterocyclic scaffolds. This series aims to do so, by collecting developments into common themes.

Click Chemistry for Biotechnology and Materials Science

Click Chemistry for Biotechnology and Materials Science PDF Author: Joerg Lahann
Publisher: John Wiley & Sons
ISBN: 9780470748855
Category : Technology & Engineering
Languages : en
Pages : 432

Book Description
Mimicking natural biochemical processes, click chemistry is a modular approach to organic synthesis, joining together small chemical units quickly, efficiently and predictably. In contrast to complex traditional synthesis, click reactions offer high selectivity and yields, near-perfect reliability and exceptional tolerance towards a wide range of functional groups and reaction conditions. These ‘spring loaded’ reactions are achieved by using a high thermodynamic driving force, and are attracting tremendous attention throughout the chemical community. Originally introduced with the focus on drug discovery, the concept has been successfully applied to materials science, polymer chemistry and biotechnology. The first book to consider this topic, Click Chemistry for Biotechnology and Materials Science examines the fundamentals of click chemistry, its application to the precise design and synthesis of macromolecules, and its numerous applications in materials science and biotechnology. The book surveys the current research, discusses emerging trends and future applications, and provides an important nucleation point for research. Edited by one of the top 100 young innovators with the greatest potential to have an impact on technology in the 21st century according to Technology Review and with contributions from pioneers in the field, Click Chemistry for Biotechnology and Materials Science provides an ideal reference for anyone wanting to learn more about click reactions.

Asymmetric Synthesis and Application of Alpha-Amino Acids

Asymmetric Synthesis and Application of Alpha-Amino Acids PDF Author: Vadim A Soloshonok
Publisher: American Chemical Society
ISBN:
Category : Language Arts & Disciplines
Languages : en
Pages : 516

Book Description
This volume presents the most recent and comprehensive collection of reviews on methodological developments in the field of alpha-amino acids.