Mechanisms of Protease Action

Mechanisms of Protease Action PDF Author: Laszlo Polgar
Publisher: CRC Press
ISBN: 9780849369018
Category : Medical
Languages : en
Pages : 236

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Book Description
A uniform treatment of the four protease groups and a discussion of the differences and similarities in their action is presented in this important new publication. Serine, cysteine, aspartate, and zinc proteases are systematically discussed by nomenclature, evolution, specificity and their regulatory role. The chemistry of the peptide bond, including the catalysis of ester and peptide hydrolyses, is explained. For each protease group the emphasis is placed on the structure and function. Kinetics, enzyme modifications, isotope effects, subzero temperature investigations, nuclear magnetic resonance measurements, X-ray diffraction data, binding of transition-state analogs, zymogen activation, and site-specific mutagenesis are combined to rationalize the action of proteases. Both natural and synthetic inhibitors are considered because of their importance in mechanistic studies and drug design.

Mechanisms of Protease Action

Mechanisms of Protease Action PDF Author: Laszlo Polgar
Publisher: CRC Press
ISBN: 9780849369018
Category : Medical
Languages : en
Pages : 236

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Book Description
A uniform treatment of the four protease groups and a discussion of the differences and similarities in their action is presented in this important new publication. Serine, cysteine, aspartate, and zinc proteases are systematically discussed by nomenclature, evolution, specificity and their regulatory role. The chemistry of the peptide bond, including the catalysis of ester and peptide hydrolyses, is explained. For each protease group the emphasis is placed on the structure and function. Kinetics, enzyme modifications, isotope effects, subzero temperature investigations, nuclear magnetic resonance measurements, X-ray diffraction data, binding of transition-state analogs, zymogen activation, and site-specific mutagenesis are combined to rationalize the action of proteases. Both natural and synthetic inhibitors are considered because of their importance in mechanistic studies and drug design.

Mechanisms of Catalysis

Mechanisms of Catalysis PDF Author:
Publisher: Academic Press
ISBN: 9780080865966
Category : Technology & Engineering
Languages : en
Pages : 459

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Book Description
The remarkable expansion of information leading to a deeper understanding of enzymes on the molecular level necessitated the development of this volume which not only introduces new topics to The Enzymes series but presents new information on some covered in Volume I and II of this edition.

Mechanisms of Protease Action

Mechanisms of Protease Action PDF Author: László Polgár
Publisher:
ISBN:
Category : Proteolytic enzymes
Languages : en
Pages : 223

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Book Description


Proteases: Structure and Function

Proteases: Structure and Function PDF Author: Klaudia Brix
Publisher: Springer Science & Business Media
ISBN: 3709108853
Category : Science
Languages : en
Pages : 568

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Book Description
Proteolysis is an irreversible posttranslational modification affecting each and every protein from its biosynthesis to its degradation. Limited proteolysis regulates targeting and activity throughout the lifetime of proteins. Balancing proteolysis is therefore crucial for physiological homeostasis. Control mechanisms include proteolytic maturation of zymogens resulting in active proteases and the shut down of proteolysis by counteracting endogenous protease inhibitors. Beyond the protein level, proteolytic enzymes are involved in key decisions during development that determine life and death – from single cells to adult individuals. In particular, we are becoming aware of the subtle role that proteases play in signaling events within proteolysis networks, in which the enzymes act synergistically and form alliances in a web-like fashion. Proteases come in different flavors. At least five families of mechanistically distinct enzymes and even more inhibitor families are known to date, many family members are still to be studied in detail. We have learned a lot about the diversity of the about 600 proteases in the human genome and begin to understand their physiological roles in the degradome. However, there are still many open questions regarding their actions in pathophysiology. It is in this area where the development of small molecule inhibitors as therapeutic agents is extremely promising. Approaching proteolysis as the most important, irreversible post-translational protein modification essentially requires an integrated effort of complementary research disciplines. In fact, proteolytic enzymes seem as diverse as the scientists working with these intriguing proteins. This book reflects the efforts of many in this exciting field of research where team and network formations are essential to move ahead.

TRP Ion Channel Function in Sensory Transduction and Cellular Signaling Cascades

TRP Ion Channel Function in Sensory Transduction and Cellular Signaling Cascades PDF Author: Wolfgang B. Liedtke, MD, PH.D.
Publisher: CRC Press
ISBN: 1420005847
Category : Medical
Languages : en
Pages : 502

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Book Description
Since the first TRP ion channel was discovered in Drosophila melanogaster in 1989, the progress made in this area of signaling research has yielded findings that offer the potential to dramatically impact human health and wellness. Involved in gateway activity for all five of our senses, TRP channels have been shown to respond to a wide range of st

Proteases

Proteases PDF Author: Nelson Pérez Guerra
Publisher:
ISBN: 9781536158540
Category : Enzymes
Languages : en
Pages : 0

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Book Description
An overview of the latest knowledge about the functions and action mechanisms of protease enzymes and their applications in different industrial fields.

Retroviral Proteases

Retroviral Proteases PDF Author: Lawrence C. Kuo
Publisher: Gulf Professional Publishing
ISBN: 9780121821425
Category : Medical
Languages : en
Pages : 494

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Book Description
Methods included in this volume apply to the expression and characterization of retroviral proteases and their inhibitor/substrate design.

Plant Proteases

Plant Proteases PDF Author: Mercedes Diaz-Mendoza
Publisher: Frontiers Media SA
ISBN: 2889633993
Category :
Languages : en
Pages : 157

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Book Description
Plant proteases are involved in most aspects of plant physiology and development, playing key roles in the generation of signaling molecules and as regulators of essential cellular processes such as cell division and metabolism. They take part in important pathways like protein turnover by the degradation of misfolded proteins and the ubiquitin-proteasome pathway, and they are responsible for post-translational modifications of proteins by proteolysis at highly specific sites. Proteases are also implicated in a great variety of environmentally controlled processes, including mobilization of storage proteins during seed germination, development of seedlings, senescence, programmed cell death and defense mechanisms against pests and pathogens. However, in spite of their importance, little is known about the functions and mode of actions of specific plant proteases. This Research Topic collects contributions covering diverse aspects of plant proteases research.

Inflammation, 4 Volume Set

Inflammation, 4 Volume Set PDF Author: Jean-Marc Cavaillon
Publisher: John Wiley & Sons
ISBN: 3527338993
Category : Medical
Languages : en
Pages : 1818

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Book Description
The leading reference on this topic of increasing medical relevance is unique in offering unparalleled coverage. The editors are among the most respected researchers in inflammation worldwide and here have put together a prestigious team of contributors. Starting with the molecular basis of inflammation, from cytokines via the innate immune system to the different kinds of inflammatory cells, they continue with the function of inflammation in infectious disease before devoting a large section to the relationship between inflammation and chronic diseases. The book concludes with wound and tissue healing and options for therapeutic interventions. A must have for clinicians and biomedical researchers alike.

The Exocrine Pancreas

The Exocrine Pancreas PDF Author: Stephen Pandol
Publisher: Morgan & Claypool Publishers
ISBN: 1615041389
Category : Medical
Languages : en
Pages : 66

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Book Description
The secretions of the exocrine pancreas provide for digestion of a meal into components that are then available for processing and absorption by the intestinal epithelium. Without the exocrine pancreas, malabsorption and malnutrition result. This chapter describes the cellular participants responsible for the secretion of digestive enzymes and fluid that in combination provide a pancreatic secretion that accomplishes the digestive functions of the gland. Key cellular participants, the acinar cell and the duct cell, are responsible for digestive enzyme and fluid secretion, respectively, of the exocrine pancreas. This chapter describes the neurohumoral pathways that mediate the pancreatic response to a meal as well as details of the cellular mechanisms that are necessary for the organ responses, including protein synthesis and transport and ion transports, and the regulation of these responses by intracellular signaling systems. Examples of pancreatic diseases resulting from dysfunction in cellular mechanisms provide emphasis of the importance of the normal physiologic mechanisms.