Biotransformations involving hydrolytic enzymes by Neil J. Naylor

Cover of: Biotransformations involving hydrolytic enzymes | Neil J. Naylor

Published by typescript in [s.l.] .

Written in English

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Edition Notes

Thesis (Ph.D.) - University of Warwick, 1997.

Book details

StatementNeil J. Naylor.
The Physical Object
Pagination[ix],192p.
Number of Pages192
ID Numbers
Open LibraryOL17482213M

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Hydrolytic enzymes have been coupled with ruthenium and iridium catalysts for the dynamic kinetic resolution (DKR) of exocyclic allylic alcohols, secondary alcohols and lactic acid esters.

Alcohol dehydrogenases (ADHs) have been applied to the DKR of α-substituted β-esters and for the first time to the oxidative resolution of racemic :// Applications of Hydrolytic and Decarboxylating Enzymes in Biotransformations.

In applying these enzymes to the practical synthesis of these classes of compound, several factors need to be This book addresses the use of ionic liquids in biotransformation and organocatalysis.

Its major parts include: an overview of the fundamentals of ionic liquids and their interactions with proteins and enzymes; the use of ILs in biotransformations; non-solvent applications such as additives, membranes, substrate anchoring, and the use of ILs in organocatalysis (from solvents to co-catalysts This is quite simply the best book of its type and can be unreservedly recommended to organic chemists who have an interest in using hydrolytic enzymes in synthesis." (Nicholas J.

Turner, University of Edinburgh) "The book is an indispensable Biotransformations involving hydrolytic enzymes book of information on Biotransformation and enzymes.

Saurabh Bhatia Biotransformations involving hydrolytic enzymes book a number of biotransformations are recognized, only particular reactions are valuable for the production of commercially important products.

production of chiral compounds and reversal of hydrolytic reactions. Among these, oxidation, isomerization and hydrolysis reactions are more Most biocatalytic research involves hydrolytic enzymes; only a quarter of the studies deal with oxidoreductases and less than 15% with the other industrial biotransformations (), the domination of hydrolases is less example, processes that are catalysed by lyases and transferases are reasonably successful as ://   Microbial Enzymes and Biotransformations, edited by José Luis Barredo, Environmental Microbiology:Methods and Protocols, edited by John F.

Spencer and Alicia L. Ragout de Spencer, Enzymes in Nonaqueous Solvents:Methods and Protocols, edited by Evgeny N. Vulfson, Peter J. Halling, and Herbert L. Holland,   Biotransformations catalysed by isolated enzymes are dominated by the use of various lipases for the hydrolysis or formation of esters.

Hydrolytic enzymes constitute the most frequently used biocatalysts which account for about 30% biotransformations. Some of the isolated enzymes mediate biotransformations are precised in table Enzymes can generally catalyze their reactions in both directions.

This is of special interest for the preparative use of hydrolytic enzymes such as lipases/esterases, where the reverse reaction can be performed in organic solvents. Table 2. Types of Substrate Conversions (Selection) that have been Successfully Performed by Biocatalysisa?Action=downloadAsset&AssetId= This book is a unique resource for state-of-the-art research findings on biotechnological innovations in the area of industrial and therapeutic enzymes.

It considers special-function and extreme-nature enzymes such as ribozymes, therozymes, cold-adapted enzymes, etc, covering all aspects such as the producing micro-organisms, their mode of cultivation, downstream processing and ://?id=x13NiCGHMt8C. "Bornscheuer and Kazlauskas have set out, and succeeded, in producing a definitive manual on hydrolytic enzymes (especially lipases, esterases, and proteases) for organic chemists.

This is quite simply the best book of its type and can be unreservedly recommended to organic chemists who have an interest in using hydrolytic enzymes in synthesis." › Books › Medical Books › Medicine. Author: Naylor NJ. Search worldwide, life-sciences literature Search. Advanced Search.

E.g. "breast cancer" HER2 Smith In this book, Kurt Faber, who holds the position of Dozent at this institution, has produced an outstanding teaching aid in the area of biotransformations.

Kinetics, equilibria, and their effects on selectivity and enantioselectivity are explained in careful detail, with interesting reactions provided to Biotransformations involving hydrolytic enzymes. Author: Naylor, Neil J. ISNI: Awarding Body: University of Warwick Current Institution: University of Warwick Date of Award: Availability of Full Text: Access from EThOS: ?uin= 16 1 History of Industrial Biotransformations – Dreams and Realities Hill () was the first to show that the biocatalysis of hydrolytic enzymes is revers- ible [60].

Pottevin () went further and demonstrated that crude pancreatic lipase could synthesize methyl oleate from methanol and oleic acid in a largely organic reaction mix- ture Industrial Biotransformation Article PDF Available.

are used in reductive biotransformations for the production of valuable chiral alcohols. Cellulases are the hydrolytic group of enzymes Detailed evaluation of the frequency of a given enzyme-type used for biotransformations over time reveals that approximately two-thirds of all published biotransformations are still catalyzed by simple hydrolytic enzymes, such as esterases, protease and lipases [1, 2] and the pace, at which ‘new’ enzymes for selective biotansformations are The authors cover biotransformations involving the hydrolysis of esters, amides and nitriles, the synthesis of esters and amides, reduction and oxidation reactions and carbon-carbon bond-forming systems.

The book finishes with a discussion of some industrially important large-scale  › eBay › Books › Nonfiction. Practical Biotransformations: A Beginner's Guide provides an introduction to microbes and enzymes and demonstrates their practical applications in synthetic organic chemistry.

Designed as a laboratory manual, this user-friendly guide discusses standard laboratory techniques, with appropriate advice on aspects of microbial practice and A"The book provides a good overview and appropriately conceived outline of this complex topic, enabling the interested reader to begin work with enzymes quickly and without unnecessary complications.A" (Angewandte Chemie, October ) A"Gogan presents a beginner's guide to microbes and enzymes and how to use them for synthetic organic reactions in the laboratory.A" (Book News, September   hydrolytic enzymes, such as esterases, amidases and phosphotases, capable of carrying out the oxidative biotransformations of xenobiotics have been found in bacteria, yeast, and fungi.

Although phase I metabolism is of more importance for identifying metabolites rug etab Toicol. Get this from a library. Hydrolases in organic synthesis: regio- and stereoselective biotransformations.

[U T Bornscheuer; R J Kazlauskas] -- From reviews to the first edtion. "Bornscheuer and Kazlauskas have set out, and succeeded, in producing a definitive manual on hydrolytic enzymes (especially lipases, esterases, and proteases) for An important feature of using enzymes in bioprocessing is that enzyme action is controllable by careful setting of reaction conditions and can be terminated by heating where this is appropriate.

With many industrial enzymes, used for example in food processing, the relatively low cost of the enzyme used as a processing aid makes its recovery   readily available enzymes possessing relaxed substrate specificities exist and are the main features that have made the hydrolases the favorite class of enzyme for organic chemists during the past decade.

About two-thirds of the total research in the field of biotransformations has been performed using hydrolytic enzymes of this type and new   6 INTRODUCTION TO ENZYMES 3.

Hydrolases – These enzymes catalyse the hydrolytic cleavage of C-O, C-N, C-C and some other bonds, including phosphoric anhydride bonds. Lyases – Lyases are enzymes cleaving C-C, C-O, C-N, and other bonds by elimination, leaving double bonds or rings, or conversely adding groups   For example, Enzymes is definitely not a beautifully-typeset book.

On the other hand, the printing in Biotransformations, while nicer, is light and difficult to read. More importantly, both books omit major classes of reactions that could potentially be of immense value to :// Biotransformations in Organic Chemistry: A Textbook, Edition 6 - Ebook written by Kurt Faber.

Read this book using Google Play Books app on your PC, android, iOS devices. Download for offline reading, highlight, bookmark or take notes while you read Biotransformations in Organic Chemistry: A Owing to the more abundant occurrence of racemic compounds compared to prochiral or meso forms, most enantiomerically pure products are obtained via racemate resolution.

This review summarizes (chemo)enzymatic enantioconvergent processes based on the use of hydrolytic enzymes, which are able to invert a stereocenter during catalysis that can overcome the 50%-yield limitation of kinetic :// The majority of hydrolytic enzymes used in white biotechnology for the production of non-natural compounds – such as carboxyl ester hydrolases, lipases and proteases – show a certain preference for a given enantiomer.

However, they are unable to alter the stereochemistry of the substrate during catalysis with respect to inversion or retention of ://(06)   biotransformations are currently performed on an industrial scale, mostly in the manufacture of pharmaceutical intermediates and other fine chemicals.

Advances in recombinant DNA techniques (3) have made it, in principle, possible to produce any enzyme for a commercially acceptable price and widespread sourcing of enzymes from extreme Introduction to Biocatalysis Using Enzymes and Microorganisms: The authors cover biotransformations involving the hydrolysis of esters, amides and nitriles, the synthesis of esters and amides, reduction and oxidation reactions and carbon-carbon bond-forming systems.

The book finishes with a discussion of some industrially  › Books › New, Used & Rental Textbooks › Medicine & Health Sciences. Wiley‐VCH, WeinheimXII+ pp., hardcover € —ISBN 3‐‐‐0 Enzyme catalysis is one of the key technologies of the expanding area of Industrial Biotechnology.

The use of enzymes in fine‐chemical synthesis is a well‐established field that has faced an explosive growth in recent years, and the need for new literature summarising recent achievements has been Biotransformations involving non-natural reactions of enzymes, e.g.

ester ammoniolysis, and the rational design of semi-synthetic enzymes, such as vanadate phytase, are discussed. The optimisation of enzyme properties using in vitro evolution and improvement of their operational stability by immobilisation as cross-linked enzyme aggregates   Industrial Biorefineries and White Biotechnology.

provides a comprehensive look at the increasing focus on developing the processes and technologies needed for the conversion of biomass to liquid and gaseous fuels and chemicals, in particular, the development of low-cost technologies.

During the last years, there have been scientific and technological developments in the area; this book In recent years, enzymatic catalysis in organic solvents-as opposed to aqueous solutions-has gained considerable attention as a powerful new approach to the preparation of natural products, pharmaceuticals, fine chemicals, and food ingredients.

In Enzymes in Nonaqueous Solvents: Methods and Protocols, leading chemists, biochemists, biotechnologists, and process engineers summarize for Read "Ionic Liquids in Biotransformations and Organocatalysis.

Solvents and Beyond. Edited by Pablo Domínguez de María., Angewandte Chemie International Edition" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your :// COVID Resources.

Reliable information about the coronavirus (COVID) is available from the World Health Organization (current situation, international travel).Numerous and frequently-updated resource results are available from this ’s WebJunction has pulled together information and resources to assist library staff as they consider how to handle coronavirus This book is a unique resource for state-of-the-art research findings on biotechnological innovations in the area of industrial and therapeutic enzymes, and special-function and extreme-nature enzymes such as ribozymes, therozymes, cold-adapted enzymes, etc, covering all aspects such as the producing micro-organisms, their mode of cultivation, downstream processing and  › Life Sciences › Biochemistry & Biophysics.

Biotransformations involving the hydrolysis of esters, amides and nitriles, the synthesis of esters and amides, reduction and oxidation reactions and carbon–carbon bond-forming systems are discussed.

The book finishes with a discussion of some industrially important large-scale ://   Keywords:Asymmetric synthesis, biotransformations, desymmetrization, hydrolases, kinetic resolutions, pharmaceuticals. Abstract:Hydrolases are versatile enzymes for synthetic purposes as they are able to catalyze multiple transformations in both aqueous medium and organic solvents.

Their easiness of use and lack of cofactor dependency have. This book is a unique resource for state-of-the-art research findings on biotechnological innovations in the area of industrial and therapeutic enzymes. It considers special-function and extreme-nature enzymes such as ribozymes, therozymes, cold-adapted enzymes, etc, covering all aspects such as the producing micro-organisms, their mode of The use of pH indicators to monitor enzyme-catalyzed reactions is described.

The formation of acid following an enzyme-mediated reaction, such as hydrolysis, causes a drop in the pH that can be visualized by a change in the color of the indicator-containing solution. Preferred indicators are those showing a color transition within the operational pH range of the ://  Design and construction of modular plug-and-play single-cell biocatalysts.

The aim was the development of a recombinant E. coli single-cell system providing all required enzymes for the asymmetric reductive amination of prochiral α-ketoacids and ketones in a flexible plug-and-play fashion. The system consisted of three modules, each of them representing one essential reaction type of the

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