Synthetic Peptides

The first synthetic peptides were produces a century ago. In the ensuing period, they have developed as valuable research tools that are readily available to all researchers. However, since most reasearchers do not make their own peptides, they are often unfamiliar with not only the synthetic chemistry, but also with important and useful aspects of design, analysis, handling, and applications. This volume is written by experts in the field who provide detailed descriptions as well as practical advice for producing and using synthetic peptides. Chapters cover peptide design considerations, the synthetic chemistry, the evaluation of the synthetic product, and the modern applications of synthetic peptides. (Midwest).

Folded peptides - and peptide motifs within proteins - are abundant in living organisms, where they are essential for the biological activities of the peptides and proteins. During the past decades, much research has been dedicated to understanding the rules that govern peptide folding. Simultaneously, a range of strategies have been established for the conformational stabilization of bioactive peptides, as well as for the de novo design of peptides with defined secondary structures. These methods are either based on the chemical modification of the peptide backbone, such as cyclization and stapled peptides, or on the use of a range of non-proteinogenic amino acids that, in a defined sequential arrangement, induce secondary structures peptides. Such building blocks include D- and other non-proteinogenic amino acids, as well as beta- and gamma-amino acids. This Research Topic comprises a collection of papers by an international group of 77 scientists with a background in synthetic, analytical, computational and medicinal chemistry, as well as in biochemistry and pharmacology. Their research is presented here in a total of 11 papers (8 original research reports and 3 reviews), covering diverse aspects of folded synthetic peptides. These studies include the preparation and characterization of new peptide monomers with interesting folding properties, the synthesis and conformational analysis of non-natural peptides, as well as the use of folded peptidomimetics as molecular switches. Additionally, a range of biomedical applications, such as antimicrobial, anti-inflammatory, antiangiogenic and immune-stimulating activities, are also reported. We hope this eBook will be a source of inspiration and knowledge for scientist in various disciplines related to folded peptides and their many applications, as well as for those who want to learn more about this fascinating field of research.

The Novartis Foundation Series is a popular collection of the proceedings from Novartis Foundation Symposia, in which groups of leading scientists from a range of topics across biology, chemistry and medicine assembled to present papers and discuss results. The Novartis Foundation, originally known as the Ciba Foundation, is well known to scientists and clinicians around the world.

In recent years, research has shown the importance of peptides in neuroscience, immunology, and cell biology. Active research programs worldwide are now engaged in developing peptide-based drugs and vaccines using modification of natural peptides and proteins, design of artificial peptides and peptide mimetics, and screening of peptide and phage libraries. In this comprehensive book, the authors discuss peptide synthesis and application within the context of their increasing importance to the pharmaceutical industry. Peptides: Synthesis, Structures, and Applications explores the broad growth of information in modern peptide synthetic methods and the structure-activity relationships of synthetic polypeptides. The history of peptide chemistry Amide formation, deprotection, and disulfide formation in peptide synthesis Solid-phase peptide synthesis a-helix formation by peptides in water Stability and dynamics of peptide conformation An overview of structure-function studies of peptide hormones Neuropeptides:peptide and nonpeptide analogs Reversible inhibitors of serine proteinases Design of polypeptides Current capabilities and future possibilities of soluble chemical combinatorial libraries Epitope mapping with peptides Synthesis and applications of branched peptides in immunological methods and vaccines

Peptide synthesis includes an array of techniques and procedures that enable the preparation of materials ranging from small peptides to large proteins. Many synthetic peptides have commercial and pharmaceutical applications, however, the synthesis of these peptides is a difficult task. This book addresses the common problems relating to the synthesis and applications of synthetic peptides. It discusses novel methods for the efficient synthesis of long chain and difficult peptide sequences and presents detailed analysis of various aspects of solid phase peptide synthesis. It also includes a section on antimicrobial peptides.

Synthetic Peptides discusses racemization, protecting group techniques, peptide bond-forming methodology, amino acids, and dipeptide syntheses. The book explains solid phase synthesis methods, cyclopeptides, nucleopeptides, chromopeptides of the actinomycin D type, and cites examples of syntheses of peptides of different sizes. The text describes tripeptides, tetrapeptides, pentapeptides, hexapeptides, and also undecapeptides to nonadecapeptides. Riniker and colleagues explain the revised structures (for the human and porcine hormone, Asn for Asp at position 25 and Glu for Gin at position 30) for the 39-unit adrenocorticotropic hormone. A synthesis of the 32-unit human calcitonin M is associated with the fragment condensation approach to complex peptides. The book also reviews cyclodepsipeptide valinomycin based on the possible transport of a potassium ion through biological membranes by this substance and the synthesis of a D-Pro analog. The text describes the cyclic decapeptide antibiotic gramicidin S, belonging to a family of similar substances isolated from Bacillus brevi, that can treat certain eye-threatening infections. The book can prove beneficial for biochemists, micro-biologists, cellular investigators, and researchers involved in physiology, oncology or therapeutics.

Organic chemists working on the synthesis of natural products have long found a special challenge in the preparation of peptides and proteins. However, more reliable, more efficient synthetic preparation methods have been developed in recent years. This reference evaluates the most important synthesis methods available today, and also considers methods that show promise for future applications. This text describes the state of the art in efficient synthetic methods for the synthesis of both natural and artificial large peptide and protein molecules. Subjects include an introduction to basic topics, linear solid-phase synthesis of peptides, peptide synthesis in solution, convergent solid-phase synthesis, methods for the synthesis of branched peptides, formation of disulfide bridges, and more. The book emphasizes strategies and tactics that must be considered for the successful synthesis of peptides.

Artificial Protein and Peptide Nanofibers: Design, Fabrication, Characterization, and Applications provides comprehensive knowledge of the preparation, modification and applications of protein and peptide nanofibers. The book reviews the synthesis and strategies necessary to create protein and peptide nanofibers, such as self-assembly (including supramolecular assembly), electrospinning, template synthesis, and enzymatic synthesis. Then, the key chemical modification and molecular design methods are highlighted that can be utilized to improve the bio-functions of these synthetic fibers. Finally, fabrication methods for key applications, such as sensing, drug delivery, imaging, tissue engineering and electronic devices are reviewed. This book will be an ideal resource for those working in materials science, polymer science, chemical engineering, nanotechnology and biomedicine. Reviews key chemical modification and molecular design methods to improve the bio-functions of synthetic peptide and protein nanofibers Discusses the most important synthesis strategies, including supramolecular assembly, electrospinning, template synthesis and enzymatic synthesis Provides information on fabrication of nanofibers for key applications such as sensing, imaging, drug delivery and tissue engineering