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How Enzymes Work

Released on 2019-08-22
How Enzymes Work

Author: Haruo Suzuki

Publisher: CRC Press

ISBN: 9781000681437

Category: Medical

Page: 222

View: 795

The first edition of this book covered the basic treatment of the enzyme reaction using the overall reaction kinetics and stopped-flow method, the general properties of protein and cofactors, the control of enzyme reaction, and the preparation of enzyme protein. These topics are the basis of enzyme research and thus suitable for the beginner in the field. The second edition presents the cofactors produced via the post-translational modification of the enzyme’s active site. These cofactors expand the function of enzymes and open a new research field. The carbonyl reagent phenylhydrazine and related compounds have been useful in finding some of the newly discovered cofactors and thus have been discussed in this edition. The topic of the control of enzyme activity through the channel of substrates and products in polyfunctional enzymes has also been expanded in this book.

The Role of Enzymes

Released on 2009
The Role of Enzymes

Author:

Publisher:

ISBN: OCLC:1236127561

Category: Biochemistry

Page:

View: 632

Enzymes are the critical ingredient in every organism that make life possible. They are catalysts and drive every chemical reaction that takes place in the human body, enabling our bodies to be built from proteins, carbohydrates, and fats. In this program we investigate the role of enzymes in detail, offering both theoretical and practical examples. We look at how enzymes function in living organisms, enzyme kinetics, enzyme substrate complex, enzyme activity, and finally the power of enzymes in the 21st century. We demonstrate enzyme activity, and the affects of substrate concentration, the pH, temperature and inhibitors.

Enzymes in Industry

Released on 2006-05-12
Enzymes in Industry

Author: Wolfgang Aehle

Publisher: John Wiley & Sons

ISBN: 9783527605019

Category: Science

Page: 508

View: 924

Leading experts from all over the world present an overview of the use of enzymes in industry for: - the production of bulk products, such as glucose, or fructose - food processing and food analysis - laundry and automatic dishwashing detergents - the textile, pulp and paper and animal feed industries - clinical diagnosis and therapy - genetic engineering. The book also covers identification methods of new enzymes and the optimization of known ones, as well as the regulatory aspects for their use in industrial applications. Up to date and wide in scope, this is a chance for non-specialists to acquaint themselves with this rapidly growing field. '...The quality...is so great that there is no hesitation in recommending it as ideal reading for any student requiring an introduction to enzymes. ...Enzymes in Industry - should command a place in any library, industrial or academic, where it will be frequently used.' The Genetic Engineer and Biotechnologist

Enzymes at Work

Released on 1992
Enzymes at Work

Author:

Publisher:

ISBN: OCLC:1153113694

Category:

Page: 49

View: 158

Enzymatic Reaction Mechanisms

Released on 2007-01-27
Enzymatic Reaction Mechanisms

Author: Perry A. Frey

Publisher: Oxford University Press

ISBN: 9780195122589

Category: Science

Page: 852

View: 208

Much has happened in the field of mechanistic enzymology in the past 15 to 20 years, but books dealing with the mechanisms of enzymatic reactions were writtena generation ago and have not been updated. There is no single volume on enzymatic mechanismsto which medicinal chemists and biotechnologists can refer. As the modern day replacement for C.T. Walsh's classic 1979 book on the subject, Frey and Hegeman's text promises to be an instant success.

Therapeutic Enzymes: Function and Clinical Implications

Released on 2019
Therapeutic Enzymes: Function and Clinical Implications

Author: Nikolaos Labrou

Publisher:

ISBN: 9811377103

Category: Biochemistry

Page: 386

View: 772

This edited work presents studies that clarify several aspects of the development and application of therapeutic enzymes. Therapeutic enzymes exhibit fascinating features and opportunities, and represent a significant and promising subcategory of modern biopharmaceuticals for the treatment of several severe diseases. Research and drug developments efforts and the advancements in biotechnology over the past twenty years have greatly assisted the introduction of efficient and safe enzyme-based therapies for a range of both rare and common disorders. The introduction and regulatory approval of twenty different recombinant enzymes has enabled effective enzyme-replacement therapy. This book covers mainly three areas of recombinant therapeutic enzymes and their clinical and pharmaceutical technology: (i) overview of the production process and biochemical characterization of therapeutic enzymes, (ii) focuses upon the engineering strategies and delivery methods of therapeutic enzymes, (iii) clinical applications of selected therapeutic enzymes, including aspects on their mechanisms of action and information on safety, immunogenicity issues and various adverse events of the enzymes used for therapy. The topic of this book is particularly relevant to academics, researchers and students undertaking advanced undergraduate/postgraduate programs in the biopharmaceutical/biotechnology area who wish to gain a comprehensive understanding of enzyme-based therapeutic molecules.

Industrial Applications of Microbial Enzymes

Released on 2022-07
Industrial Applications of Microbial Enzymes

Author:

Publisher:

ISBN: 1032065982

Category:

Page:

View: 560

"Microbial enzymes are important because they can be used for a wide variety of industrial purposes. There is dispersed and scanty information available with respect to microbial enzymes and their industrial applications. In this edited book, leading scientists have covered the various aspect of microbial enzymes and their industrial applications. Using microbial enzymes can help expedite various manufacturing processes and contribute to sustainable development, which is a priority worldwide. Research gaps in the entrainment of microbial enzymes with their direct application in product development are a major focus of this volume. Key Features: Cover microbial enzymes with comprehensive and in-depth information. Benefits students by describing recent advancements into microbial enzymology. Provides updates regarding microbial enzymes for researchers and industrial scientists. Includes findings on the microbial actions for better life Related Titles Thatoi, H., et al., eds. Microbial Fermentation and Enzyme Technology (ISBN 978-0-3671-8384-4). Svendsen, A., ed. Understanding Enzymes: Function, Design, Engineering, and Analysis (ISBN 978-9-8146-6932-0). Seneviratne, C. J., ed. Microbial Biofilms: Omics Biology, Antimicrobials and Clinical Applications (ISBN 978-0-3676-5799-4). Suzuki, H. How Enzymes Work: From Structure to Function (ISBN 978-9-8148-0066-2). de Lourdes, M., et al., eds. Fungal Enzymes (ISBN 978-1-4665-9454-8)"--

Enzyme Active Sites and their Reaction Mechanisms

Released on 2020-12-02
Enzyme Active Sites and their Reaction Mechanisms

Author: Harry Morrison

Publisher: Academic Press

ISBN: 9780128231944

Category: Science

Page: 280

View: 593

Enzyme Active Sites and their Reaction Mechanisms provides a one-stop reference on how enzymes "work." Here, Dr. Harry Morrison, PhD and Professor Emeritus at Purdue University, provides a detailed overview of the origin and function of forty enzymes, the chemical details of their active sites, their mechanisms of action, and associated cofactors. The enzymes featured highlight a step forward, along with possible areas of application, thus supporting new research in academic and industrial labs. Each chapter is written in a clear format, including a brief summary of enzyme function and structure, a detailed description of their mechanisms of action and associated co-factors. Offers a comprehensive, biochemical understanding of enzyme mechanisms and their reaction sites Supports new research in academic, medical and industrial labs, connecting discoveries powered by recent advances in technology and experimental approaches to areas of application Features short, carefully structured, actionable chapters on various enzyme classes, thus allowing for easy-use and searchability

The Structural Bases of and Relationship Between Enzyme Stability and Enzyme Function

Released on 2002
The Structural Bases of and Relationship Between Enzyme Stability and Enzyme Function

Author: Beth M. Beadle

Publisher:

ISBN: OCLC:50187375

Category:

Page:

View: 212

The structures of enzymes reflect two tendencies that appear opposed. On one hand, they must fold into compact, stable structures; on the other hand, they must bind a ligand or transition state. To be stable, enzymes fold to maximize favorable interactions, forming a tightly packed hydrophobic core, exposing hydrophilic groups to solvent, and optimizing intramolecular hydrogen-bonding. To be functional, enzymes carve out an active site for ligand binding, exposing hydrophobic surface area, clustering like charges, and providing unfulfilled hydrogen bond donors and acceptors. Since stability derives from the satisfaction of interactions within the enzyme itself and function derives from leaving interactions largely unfulfilled, it appears that there is a tradeoff between enzyme stability and enzyme function. The relationship between stability and activity is explored in a series of studies. Using the model system AmpC beta-lactamase, residue substitutions were made at key active site positions. At least one substitution at each active site residue significantly stabilized the enzyme, up to 4.7 kcal/mol, at the expense of function, down by 103- to 105-fold. Functional regions of enzymes appear to be regions of instability, as compared to alternate sequences, and enzymes may be stabilized at the expense of function. Other avenues were also explored. Reversible, thermal denaturation of a thermophilic cellulase was compared to its mesophilic analogue, and this revealed that thermophilic enzymes can be more thermodynamically stable than their mesophilic counterparts. Reversible, thermal denaturation of AmpC was used to measure the noncovalent interaction energies between AmpC and various beta-lactams. These energies suggest that some beta-lactams stabilize, and others destabilize, the enzyme on binding. The mechanism of these destabilizing inhibitors was explored through mutagenesis and X-ray crystallographic studies. Finally, one mutant enzyme, AmpC S64G, was used to capture key complexes between the enzyme and its ligand, cephalothin. In total, the examination of the relationship between stability and function suggested that enzymes sacrifice stability to gain activity and led to several important revelations about the structure and mechanism of AmpC beta-lactamase.

Enzymes

Released on 2011-12
Enzymes

Author: Muhammad Imran

Publisher: LAP Lambert Academic Publishing

ISBN: 3847313606

Category:

Page: 264

View: 924

Enzymes are biological catalysts which accelerate the chemical reactions in living things without being consumed. A catalyst is a material which builds a chemical reaction goes faster, without itself being altered. A catalyst can be utilized again and again in a chemical reaction: it is available again for same function. Enzymes are exceptionally the same apart from that they are simply denatured by heating. This book discussed about the history of enzymes, Production criteria, biotechnology, classification, Kinetics and Enzyme applications. Enzyme biotechnology involves the utilization of microorganisms such as yeast, mold or bacteria, and enzymes to make goods and services is a promising field in modern biotechnology. I am looking forward to work in a professional and competitive environment where It can put my best efforts, hard work and skills to bring up the organization and myself too. I am also a life long learner and am determined to become a knowledge professional for keeping abreast with changing technology.

Assessing Enzyme Activity as a Research Paradigm for Enzyme Function

Released on 2021
Assessing Enzyme Activity as a Research Paradigm for Enzyme Function

Author: Christopher Fiore Apuzzo

Publisher:

ISBN: 9798460475988

Category:

Page: 66

View: 235

Enzymes compose a very unique set of biomolecules, in that their primary purpose is to catalyze a plethora of crucial, biological reactions thereby changing the rates of said reactions. Enzymes are a major point of interest in the development of drug molecules due to the large downstream effects - both chemically and physiologically - that occur upon inhibition or activation. The change in activities of these enzymes are of interest to characterize and will lead to a better understanding of how they function within biological systems.Electrical stimulation (ES), in the form of implanted electrodes, has proven useful in recent years in attempts to curb neuropathic pain in patients, providing efficacious pain relief; however, the molecular mechanism of action, likely involving enzymes, underlying therapeutic relief is in need of description for this treatment. Star-shaped glial cells, known as astrocytes, are primarily found in and around neuronal synaptic clefts, allowing for regulation of neurotransmission. Production of reactive oxygen species (ROS) and reactive nitrogen species (RNS), such as superoxide (O2-) and nitric oxide (NO0́Ø), respectively, is another role of astrocyte cells. Redox active species, such as ROS and RNS, are often implicated in the establishment and continuation of chronic neuropathic pain, relating the functional role astrocytes may have to this disease state. However, these redox active species are not the only chemical species of interest produced from astrocyte cells. Coupled redox partners such as glutathione and the enzymes involved in these pathways are also candidates that may contribute to therapeutic relief following electrical stimulation.The effects of stimulation on the activity of the enzymes producing these species can be studied both in cell lines in vitro and with standard enzyme to better discern how electrical stimulation affects them. Culturing of axenic C6 glioma cells allowed for experimentation, with the predominant cell type (>99%) being astrocytes. In vitro fluorescent probe studies were developed to determine alterations in intracellular NO0́Ø, Ca2+, and Cl- levels in the presence of electrical stimulation. Changes seen in NO0́Ø levels led to method development for testing direct effects electrical stimulation may have on nitric oxide synthase, the NO0́Ø producing enzyme. Alterations in Ca2+ and Cl- levels are seen alongside NO0́Ø in the presence of electrical stimulation and neuro-gliotransmitters, requiring further query into the nature of the mechanism. A method was also developed for quantifying intracellular glioma glutathione levels, with the suggestion that cathodic passive recharge stimulation increases the amount of free glutathione available. Further inquiry into these novel developments will broaden the understanding of what electrical stimulation mechanistically does in vivo.

MicroMiracles

Released on 2005-09-29
MicroMiracles

Author: Ellen Cutler

Publisher: Rodale

ISBN: 9781594862212

Category: Health & Fitness

Page: 298

View: 106

The only definitive resource on enzyme therapy by the nation's leading expert, a pioneering medical doctor who has used enzymes to treat allergies, asthma, fatigue, chronic pain, and many other ailments—with astonishing success! Welcome to the next frontier in healing where natural substances known as enzymes will transform how we view—and combat—disease. Unlike conventional medications, which only mask symptoms, enzyme supplements work at the cellular level to repair and prevent the damage that’s responsible for a host of health problems. And they’re safe, with no known side effects. MicroMiracles is the definitive resource on enzyme therapy. Here you’ll find everything you need to assess your enzyme status and incorporate enzyme supplements into your self-care regimen. Experience their amazing therapeutic benefits for yourself! Eliminate food cravings—and unwanted pounds Replenish energy stores Stimulate immune function Protect against heart disease, cancer, and diabetes Fight inflammation Slow the aging process In MicroMiracles, you’ll also discover how undiagnosed food intolerances may leave you feeling less than your best—and how enzymes support optimum digestion and restore balance to all of your body’s systems. Your payoff is radiant health.

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