Conformation Changes in Enzyme Catalysis

Conformation Changes in Enzyme Catalysis PDF Author: J. Pidgeon
Publisher:
ISBN:
Category : Catalysis
Languages : en
Pages : 128

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Conformation Changes in Enzyme Catalysis

Conformation Changes in Enzyme Catalysis PDF Author: J. Pidgeon
Publisher:
ISBN:
Category : Catalysis
Languages : en
Pages : 128

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Book Description


Dynamics in Enzyme Catalysis

Dynamics in Enzyme Catalysis PDF Author: Judith Klinman
Publisher: Springer
ISBN: 3642389627
Category : Science
Languages : en
Pages : 217

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Christopher M. Cheatum and Amnon Kohen, Relationship of Femtosecond–Picosecond Dynamics to Enzyme-Catalyzed H-Transfer. Cindy Schulenburg and Donald Hilvert, Protein Conformational Disorder and Enzyme Catalysis. A. Joshua Wand, Veronica R. Moorman and Kyle W. Harpole, A Surprising Role for Conformational Entropy in Protein Function. Travis P. Schrank, James O. Wrabl and Vincent J. Hilser, Conformational Heterogeneity Within the LID Domain Mediates Substrate Binding to Escherichia coli Adenylate Kinase: Function Follows Fluctuations. Buyong Ma and Ruth Nussinov, Structured Crowding and Its Effects on Enzyme Catalysis. Michael D. Daily, Haibo Yu, George N. Phillips Jr and Qiang Cui, Allosteric Activation Transitions in Enzymes and Biomolecular Motors: Insights from Atomistic and Coarse-Grained Simulations. Karunesh Arora and Charles L. Brooks III, Multiple Intermediates, Diverse Conformations, and Cooperative Conformational Changes Underlie the Catalytic Hydride Transfer Reaction of Dihydrofolate Reductase. Steven D. Schwartz, Protein Dynamics and the Enzymatic Reaction Coordinate.

Enzyme Catalysis and Regulation

Enzyme Catalysis and Regulation PDF Author: Gorden Hammes
Publisher: Elsevier
ISBN: 032315817X
Category : Science
Languages : en
Pages : 276

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Book Description
Enzyme Catalysis and Regulation is an introduction to enzyme catalysis and regulation and covers topics ranging from protein structure and dynamics to steady-state enzyme kinetics, multienzyme complexes, and membrane-bound enzymes. Case studies of selected enzyme mechanisms are also presented. This book consists of 11 chapters and begins with a brief overview of enzyme structure, followed by a discussion on methods of probing enzyme structure such as X-ray crystallography and optical spectroscopy. Kinetic methods are then described, with emphasis on the general principles of steady-state and transient kinetics. The chemical principles involved in enzyme catalysis are also discussed, and case studies of a few well-documented enzymes are presented. The regulation of enzyme activity is analyzed from a nongenetic viewpoint, with particular reference to binding isotherms and models for allosterism. Two particular enzymes, aspartate transcarbamoylase and phosphofructokinase, are used as examples of well-studied regulatory enzymes. The last two chapters focus on multienzyme complexes and membrane-bound enzymes. This monograph is intended for graduate students, advanced undergraduates, and research workers in molecular biology and biochemistry.

The Enzyme Catalysis Process

The Enzyme Catalysis Process PDF Author: A. Cooper
Publisher: Springer Science & Business Media
ISBN: 1475716079
Category : Science
Languages : en
Pages : 479

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Book Description
This volume represents the proceedings of a NATO Advanced Studies Instituteheld near Barga (Italy), July 11-23, 1988, involving over 90 participants from more than twelve countries of Europe, North America and elsewhere. It was not our intention at this meeting to present a complete up-to-the-minute review of current research in enzyme catalysis but t·ather, in accord wi th the intended spiri t of NATO ASis, to gi ve an opportunity for advanced students and researchers in a wide variety of disciplines to meet tagether and study the problern from different points of view. Hence the lectures cover topics rauging from the purely theoretical aspects of chemical reaction kinetics in condensed matter through practical experimental approaches to enzyme structure, dynamics and mechanism, including the new experimental opportunities arising from genetic engineering techniques. Our approachwas unashamedly physical, both because the more biochemical aspects of enzymology are amply covered elsewhere and because progress in our understanding and application of the molecular basis of enzymic processes must ultimately come from advances in physical knowledge. We tried to cover as wide a spectrum as possible, and succeeded in gathering an expert and enthusiastic team of speakers, but there . are some inevitable omissions. In particular, and with hindsight, our discussions might have been enriched by more detailed coverage of general aspects of chemical catalysis - but readers requiring this background should find adequate references herein.

Conformational changes in formylglycine-generating enzyme during the catalytic cycle: Role of reducing agent and calcium

Conformational changes in formylglycine-generating enzyme during the catalytic cycle: Role of reducing agent and calcium PDF Author: Md Sarfaraz Alam
Publisher: Cuvillier Verlag
ISBN: 3736981104
Category : Science
Languages : en
Pages : 158

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Formylglycine generation, a unique process necessary for the activation of sulfatases, is a cotranslational event conserved from pro- to eukaryotes and is defined by the modification of the cysteine residue in the CxPxR motif of largely unfolded sulfatase polypeptides to Cα-formylglycine (FGly). This process is confined to the endoplasmic reticulum (ER) in eukaryotes and catalyzed by the formylglycine-generating enzyme (FGE), a resident protein of the ER. Mutations in FGE, that impair FGly generation, lead to production of inactive sulfatases that manifests into an inherited metabolic disorder termed multiple sulfatase deficiency (MSD) in humans. Although FGE has been proposed to function as a cofactor independent monooxygenase, the precise mechanism is not yet clear. In the present study, a baculovirus-based method for expression and purification of recombinant FGE from cultured insect cells was established and the recombinant FGE was characterized in more detail.

Mechanisms of Catalysis

Mechanisms of Catalysis PDF Author:
Publisher: Academic Press
ISBN: 0080865968
Category : Technology & Engineering
Languages : en
Pages : 471

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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.

Structural and Functional Aspects of Enzyme Catalysis

Structural and Functional Aspects of Enzyme Catalysis PDF Author: H. Eggerer
Publisher: Springer Science & Business Media
ISBN: 3642817386
Category : Science
Languages : en
Pages : 221

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Book Description
Enzymes perform the executive role in growth, energy conversion, and repair of a living organism. Their activity is adjusted to their en vironment within the cell, being turned off, switched on, or finely tuned by specific metabolites according to demands at the physiologi cal level. Each enzyme discovered in the long history of enzymology has revealed its own individuality. Even closely related members of a family differ in specificity, stability or regulatory properties. Despite these, at first sight overwhelming aspects of individuality, common factors of enzymic reactions have been recognized. Enzymes are stereospecific catalysts even when a nonspecific process would yield the same product. Knowledge of the detailed stereochemistry of an enzymic reaction helps to deduce reaction mechanisms and to ob tain insight into the specific binding of substrates at the active site. This binding close to catalytically competent groups is related to the enormous speed of enzyme-catalyzed reactions. The physical ba sis of rate-enhancement is understood in principle and further exploit ed in the design of small organic receptor molecules as model enzymes. These aspects of enzyme catalysis are discussed in Session 1. Session 2 emphasizes the dynamic aspects of enzyme substrate inter action. Substrate must diffuse from solution space to the enzyme's surface. This process is influenced and can be greatly facilitated by certain electrostatic propterties of enzymes. The dynamic events during catalysis are studied by relaxation kinetics or NMR techniques.

Bioorganic Mechanisms

Bioorganic Mechanisms PDF Author: Thomas C. Bruice
Publisher:
ISBN:
Category : Biochemistry
Languages : en
Pages : 376

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In Search of Catalytic Proficiency: The Importance of Enzyme Conformational Change to Orotidine 5'-Monophosphate Decarboxylase Catalysis

In Search of Catalytic Proficiency: The Importance of Enzyme Conformational Change to Orotidine 5'-Monophosphate Decarboxylase Catalysis PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

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New Trends in Enzyme Catalysis and Biomimetic Chemical Reactions

New Trends in Enzyme Catalysis and Biomimetic Chemical Reactions PDF Author: Gertz I. Likhtenshtein
Publisher: Springer Science & Business Media
ISBN: 0306481103
Category : Science
Languages : en
Pages : 239

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Book Description
"This book is a view of enzyme catalysis by a physico-chemist with long-term experience in the investigation of structure and action mechanism of biological catalysts. This book is not intended to provide an exhaustive survey of each topic but rather a discussion of their theoretical and experimental background, and recent developments. The literature of enzyme catalysis is so vast and many scientists have made important contribution in the area, that it is impossible in the space allowed for this book to give a representative set of references. The author has tried to use reviews, and general principles of articles. He apologizes to those he has not been able to include. . ... The monograph is intended for scientists working on enzyme catalysis and adjacent areas such as chemical modeling of biological processes, homogeneous catalysis, biomedical research and biotechnology. The book can be use as a subsidiary manual for instructors, graduate and undergraduate students of university biochemistry and chemistry departments."--Pages ix-x.