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Author: Masahiro Kinoshita
Publisher: Springer
ISBN: 9789813362314
Category : Science
Languages : en
Pages :
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Book Description
This book presents a new view of the mechanism of functional expression of ATP-driven motors (proteins or protein complexes). It is substantially different from the prevailing idea that the motor converts chemical energy to mechanical work. To facilitate understanding, the differences between the new and prevailing views are explained using many illustrations. The book is of interest to those who are not convinced of the notion of chemo–mechanical coupling. The claims presented are the following: The system, which comprises not only the motor but also water, does no mechanical work during the ATP hydrolysis cycle; a protein is moved or a protein in the complex is rotated by the entropic force generated by water. The highlight of the explanation in the book is that the mechanism of unidirectional rotation of the central shaft in F1-ATPase is discussed in detail on the basis of this new view. The hydration entropy of each β subunit to which a specific chemical compound (ATP, ADP and Pi, Pi, or nothing) is bound, the hydration entropy of the α3β3 complex, and the dependence of the hydration entropy of F1-ATPase on the orientation of the γ subunit play essential roles.
Author: Masahiro Kinoshita
Publisher: Springer
ISBN: 9789813362314
Category : Science
Languages : en
Pages :
Get Book Here
Book Description
This book presents a new view of the mechanism of functional expression of ATP-driven motors (proteins or protein complexes). It is substantially different from the prevailing idea that the motor converts chemical energy to mechanical work. To facilitate understanding, the differences between the new and prevailing views are explained using many illustrations. The book is of interest to those who are not convinced of the notion of chemo–mechanical coupling. The claims presented are the following: The system, which comprises not only the motor but also water, does no mechanical work during the ATP hydrolysis cycle; a protein is moved or a protein in the complex is rotated by the entropic force generated by water. The highlight of the explanation in the book is that the mechanism of unidirectional rotation of the central shaft in F1-ATPase is discussed in detail on the basis of this new view. The hydration entropy of each β subunit to which a specific chemical compound (ATP, ADP and Pi, Pi, or nothing) is bound, the hydration entropy of the α3β3 complex, and the dependence of the hydration entropy of F1-ATPase on the orientation of the γ subunit play essential roles.
Author: Masahiro Kinoshita
Publisher:
ISBN: 9789813362338
Category :
Languages : en
Pages : 0
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Book Description
Author: Masahiro Kinoshita
Publisher: Springer Nature
ISBN: 9813362324
Category : Science
Languages : en
Pages : 87
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Book Description
This book presents a new view of the mechanism of functional expression of ATP-driven motors (proteins or protein complexes). It is substantially different from the prevailing idea that the motor converts chemical energy to mechanical work. To facilitate understanding, the differences between the new and prevailing views are explained using many illustrations. The book is of interest to those who are not convinced of the notion of chemo–mechanical coupling. The claims presented are the following: The system, which comprises not only the motor but also water, does no mechanical work during the ATP hydrolysis cycle; a protein is moved or a protein in the complex is rotated by the entropic force generated by water. The highlight of the explanation in the book is that the mechanism of unidirectional rotation of the central shaft in F1-ATPase is discussed in detail on the basis of this new view. The hydration entropy of each β subunit to which a specific chemical compound (ATP, ADP and Pi, Pi, or nothing) is bound, the hydration entropy of the α3β3 complex, and the dependence of the hydration entropy of F1-ATPase on the orientation of the γ subunit play essential roles.
Author: Masahiro Kinoshita
Publisher: Springer
ISBN: 9811014868
Category : Science
Languages : en
Pages : 77
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Book Description
This brief discusses the mechanism of functional expression of a protein or protein complex utilizing the ATP hydrolysis cycle or proton-motive force from a unique point of view focused on the roles of water. A variety of processes are considered such as the unidirectional movement of a linear-motor protein along a filament, insertion of an unfolded protein into a chaperonin and release of the folded protein from it, transport of diverse substrates across the membrane by a transporter, and directed rotation of the central subunit within a rotatory motor protein complex. These topics are discussed in a unified manner within the same theoretical framework. The author argues that water plays imperative roles in the functional expression of these molecular machines. A pivotal factor is the entropic force or potential originating from the translational displacement of water molecules coexisting with the molecular machines in the entire system.
Author: Martinus Bernardus Maria van Dongen
Publisher:
ISBN:
Category :
Languages : en
Pages : 167
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Book Description
Author: L. Ernster
Publisher: Elsevier
ISBN: 0080860834
Category : Science
Languages : en
Pages : 543
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Book Description
This book summarises current knowledge of the structure, function,biosynthesis and regulation of energy-transducing enzymes inmitochondria, chloroplasts and bacteria. Each of the twenty chapters is written by top experts in their field, and Prof. Ernster has ensured that the book as a whole gives a well-integrated picture of the present state of knowledge of the field at its different levels and complexities. Since the publication of Bioenergetics edited by Lars Ernster in 1984, (New Comprehensive Biochemistry Vol. 9) the whole field of bioenergetics has undergone a tremendous expansion. Additionally a transition from membrane bioenergetics to molecular bioenergetics has accompanied this expansion - due mainly to the spectacular progress in the field of molecular biology over the past twenty years. Hence this volume, Molecular Mechanisms in Bioenergetics, is certain to be of interest, not only to the specialist in bioenergetics, but also to researchers working in the various fields of biophysics, biochemistry, molecular biology, genetics, cell biology and physiology. Also of interest, this volume contains an historical introduction, including a list of earlier publications relating to the history of bioenergetics.
Author: Valdur Saks
Publisher: John Wiley & Sons
ISBN: 3527621105
Category : Science
Languages : en
Pages : 633
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Book Description
In this first integrated view, practically each of the world's leading experts has contributed to this one and only authoritative resource on the topic. Bringing systems biology to cellular energetics, they address in detail such novel concepts as metabolite channeling and medical aspects of metabolic syndrome and cancer.
Author: Joachim Frank
Publisher: Cambridge University Press
ISBN: 1139499904
Category : Science
Languages : en
Pages : 287
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Book Description
The concept of molecular machines in biology has transformed the medical field in a profound way. Many essential processes that occur in the cell, including transcription, translation, protein folding and protein degradation, are all carried out by molecular machines. This volume focuses on important molecular machines whose architecture is known and whose functional principles have been established by tools of biophysical imaging (X-ray crystallography and cryo-electron microscopy) and fluorescence probing (single-molecule FRET). This edited volume includes contributions from prominent scientists and researchers who understand and have explored the structure and functions of these machines. This book is essential for students and professionals in the medical field who want to learn more about molecular machines.
Author: Jean-Daniel Horisberger
Publisher: R. G. Landes
ISBN:
Category : Medical
Languages : en
Pages : 148
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Book Description
This text addresses the question, How does the sodium pump pump'. A variety of primary structure information is available, and progress has been made in the functional characterization of the Na, K-pump, making the answer to this question possible, within reach of currently used techniques
Author: Christopher J. Fielding
Publisher: John Wiley & Sons
ISBN: 9783527625185
Category : Science
Languages : en
Pages : 553
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Book Description
This book meets the long-awaited need for a comprehensive overview of the biological role of HDLs. Edited by one of the pioneers in HDL and cholesterol research, this monograph summarizes current knowledge on HDL turnover, regulation and physiology. Clearly structured, the various sections cover HDL structure, formation, secretion and removal, as well as plasma metabolic factors. The biological activities and clinical aspects are equally discussed, as is the impact of HDL on common diseases and their prevention.
