The Three Functional States of Proteins

The Three Functional States of Proteins PDF Author: Timir Tripathi
Publisher: Elsevier
ISBN: 0443218102
Category : Science
Languages : en
Pages : 1162

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Book Description
The Three Functional States of Proteins explores how structured proteins, intrinsically disordered proteins, and phase separated proteins contribute to the complexity of cellular life, and offers insights into their roles in both health and disease. It discusses the latest research findings and highlight groundbreaking discoveries and innovative methodologies used to study these protein states. Traditionally, the different states of proteins have been defined based on their structures and functions. However, it is becoming increasingly clear that these criteria alone may not be sufficient to capture the complex and multifaceted properties of these molecules. Definitions based on thermodynamics and kinetics are now recognized as potentially more appropriate for comprehensively understanding protein states. Emerging evidence indicates that under physiological conditions, a majority of proteins possess the capability to exist in and transition between the native, droplet, and amyloid states. These distinct states play crucial roles in various cellular functions, influenced significantly by their physicochemical and structural properties. The book also considers the interactions among these states and discusses how their internal organization as individual molecules, as well as their collective organization as molecular assemblies are stabilized. Furthermore, it examines the processes by which these states are formed and the cellular functions associated with each specific state. - The book serves as an introduction to a unique volume that provides comprehensive coverage of these three functional states of proteins - The chapters are written by leading global scientists who are actively engaged in research on these specific protein states - It presents a broad picture of the current, emerging, and evolving research on these protein states - Given that this book comprehensively addresses both foundational concepts and recent advancements in the field, it will appeal a broad spectrum of readers from various academic disciplines

The Three Functional States of Proteins

The Three Functional States of Proteins PDF Author: Timir Tripathi
Publisher: Elsevier
ISBN: 0443218102
Category : Science
Languages : en
Pages : 1162

Get Book Here

Book Description
The Three Functional States of Proteins explores how structured proteins, intrinsically disordered proteins, and phase separated proteins contribute to the complexity of cellular life, and offers insights into their roles in both health and disease. It discusses the latest research findings and highlight groundbreaking discoveries and innovative methodologies used to study these protein states. Traditionally, the different states of proteins have been defined based on their structures and functions. However, it is becoming increasingly clear that these criteria alone may not be sufficient to capture the complex and multifaceted properties of these molecules. Definitions based on thermodynamics and kinetics are now recognized as potentially more appropriate for comprehensively understanding protein states. Emerging evidence indicates that under physiological conditions, a majority of proteins possess the capability to exist in and transition between the native, droplet, and amyloid states. These distinct states play crucial roles in various cellular functions, influenced significantly by their physicochemical and structural properties. The book also considers the interactions among these states and discusses how their internal organization as individual molecules, as well as their collective organization as molecular assemblies are stabilized. Furthermore, it examines the processes by which these states are formed and the cellular functions associated with each specific state. - The book serves as an introduction to a unique volume that provides comprehensive coverage of these three functional states of proteins - The chapters are written by leading global scientists who are actively engaged in research on these specific protein states - It presents a broad picture of the current, emerging, and evolving research on these protein states - Given that this book comprehensively addresses both foundational concepts and recent advancements in the field, it will appeal a broad spectrum of readers from various academic disciplines

Molecular Biology of the Cell

Molecular Biology of the Cell PDF Author:
Publisher:
ISBN: 9780815332183
Category : Cells
Languages : en
Pages : 0

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Book Description


The Role of Protein and Amino Acids in Sustaining and Enhancing Performance

The Role of Protein and Amino Acids in Sustaining and Enhancing Performance PDF Author: Institute of Medicine
Publisher: National Academies Press
ISBN: 0309172810
Category : Technology & Engineering
Languages : en
Pages : 448

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Book Description
It is a commonly held belief that athletes, particularly body builders, have greater requirements for dietary protein than sedentary individuals. However, the evidence in support of this contention is controversial. This book is the latest in a series of publications designed to inform both civilian and military scientists and personnel about issues related to nutrition and military service. Among the many other stressors they experience, soldiers face unique nutritional demands during combat. Of particular concern is the role that dietary protein might play in controlling muscle mass and strength, response to injury and infection, and cognitive performance. The first part of the book contains the committee's summary of the workshop, responses to the Army's questions, conclusions, and recommendations. The remainder of the book contains papers contributed by speakers at the workshop on such topics as, the effects of aging and hormones on regulation of muscle mass and function, alterations in protein metabolism due to the stress of injury or infection, the role of individual amino acids, the components of proteins, as neurotransmitters, hormones, and modulators of various physiological processes, and the efficacy and safety considerations associated with dietary supplements aimed at enhancing performance.

Protein Toxins in Modeling Biochemistry

Protein Toxins in Modeling Biochemistry PDF Author: Raj Kumar
Publisher: Springer
ISBN: 331943540X
Category : Science
Languages : en
Pages : 163

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Book Description
This succinct volume addresses the production of inactive, potentially toxic proteins in the absence of correct protein folding and the resultant neurodegenerative diseases. Other topics include intrinsic disorder in protein structure and function and the effects of molten globules on protein toxicity. This concise and yet thorough text also discusses using toxin structure as a model for studying structural and functional aspects of protein chemistry. Protein Toxins in Modeling Biochemistry, a SpringerBrief, is essential reading for advanced researchers, scientists and advanced graduate students interested in protein chemistry and related areas of biochemistry and molecular science.

Structure and Function of Intrinsically Disordered Proteins

Structure and Function of Intrinsically Disordered Proteins PDF Author: Peter Tompa
Publisher: CRC Press
ISBN: 1420078933
Category : Science
Languages : en
Pages : 362

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Book Description
The existence and functioning of intrinsically disordered proteins (IDPs) challenge the classical structure-function paradigm that equates function with a well-defined 3D structure. Uncovering the disordered complement of proteomes and understanding their functioning can extend the structure-function paradigm to herald new breakthroughs in drug dev

Molecular Science of Fluctuations Toward Biological Functions

Molecular Science of Fluctuations Toward Biological Functions PDF Author: Mazahide Terazima
Publisher: Springer
ISBN: 4431558403
Category : Science
Languages : en
Pages : 276

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Book Description
In this monograph, the importance of fluctuations for biological reactions is discussed from various points of view. Understanding the biological reactions at the molecular level is one of the major targets in many scientific fields, including not only basic biology but also physics, physical chemistry, and medical science. One of the key factors in the process is “fluctuation”. Thermal energy causes biological molecules to be in constant fluctuation even while they are carrying out their biological functions. How do biological systems overcome the thermal fluctuations to realize the physiologically relevant reactions? Scientists in a number of fields—physics, chemistry, pharmacology, medicine, and others—have contributed chapters that elucidate the nature of the fluctuations and the relationship between fluctuations and biological functions. The fluctuations discussed in this volume are detected by the transient grating method, nuclear magnetic resonance, X-ray diffraction and scattering, and computer simulation, among other methods. The book presents various results of the studies of fluctuations in biological processes that were obtained with these methods by the leading scientists in their fields.

Functions and Mechanisms of Bacterial Protein Homeostasis and Stress Responses

Functions and Mechanisms of Bacterial Protein Homeostasis and Stress Responses PDF Author: Axel Mogk
Publisher: Frontiers Media SA
ISBN: 2889741931
Category : Science
Languages : en
Pages : 334

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Book Description
The Cover Image for This Research Topic is Used With Permission of the Authors and Publishers of the Following Article: Winkler J, Seybert A, König L, Pruggnaller S, Haselmann U, Sourjik V, Weiss M, Frangakis AS, Mogk A, Bukau B.EMBO J. 2010 Mar 3;29(5):910-23. doi: 10.1038/emboj.2009.412. Epub 2010 Jan 21

Unfolded Proteins

Unfolded Proteins PDF Author: Trevor P. Creamer
Publisher: Nova Publishers
ISBN: 9781604561074
Category : Science
Languages : en
Pages : 330

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Book Description
The word revolution has a number of definitions (The American Heritage Dictionary, 2006). The one most pertinent to this series and volume is 'a sudden or momentous change in a situation'. Recent years have seen an unprecedented explosion of interest in unfolded proteins in all of their various forms. Coupled with this increase in interest we have seen momentous changes in the way unfolded proteins are viewed. Two particular paradigms have come under close scrutiny: unfolded proteins are disordered random coils devoid of persistent structure, and protein function first requires protein structure. The first of these is currently a hotly debated subject. The second paradigm we can safely claim has been overturned. There is a second definition of revolution that is quite relevant to a significant portion of the work reviewed herein, in particular those chapters dealing with local and persistent structure in unfolded proteins. That definition is 'a turning or rotational motion about an axis' (The American Heritage Dictionary, 2006). About four decades ago, Charles Tanford (1968) demonstrated that highly denatured proteins possess hydrodynamic properties consistent with Paul Flory's random coil (Flory, 1969). Given that the Flory random coil definition included the stipulation that conformers making up the denatured state ensemble would differ in energy by just a few kT, there has been the assumption that denatured states must therefore be completely random in nature with no persistent structure or biases towards particular conformers. Notably however, Tanford did note the random coil-like hydrodynamic data he obtained did not necessarily rule out the presence of structure in denatured proteins (Tanford, 1968). Around the same time, Sam Krimm and M. Lois Tiffany noted that the CD spectra they obtained for proteins in the presence of high concentration of chemical denaturants had similarities to spectra obtained for homopolymers of proline, lysine, and glutamic acid in water (Tiffany and Krimm, 1968a, 1968b, 1973, 1974). Homopolymers of these residues were known to adopt the left-handed polyproline II conformation, leading Tiffany and Krimm to hypothesise that highly denatured proteins possess significant polyproline II helix content. Of these two views, that espousing the lack of structure in denatured proteins became more widely adopted and was, over time, adopted as a central paradigm in protein folding. As several of the chapters in this volume note, a Tiffany and Krimm-like view appears to be, to some extent, the more correct one. The level to which it is correct is still unknown, although it is clear that the polyproline II helical conformation is not the only, perhaps not even the most common, persistent conformation present in unfolded proteins. Thus we have come through a full circle or revolution. (from the preface)

Fuzziness

Fuzziness PDF Author: Monika Fuxreiter
Publisher: Springer Science & Business Media
ISBN: 1461406595
Category : Medical
Languages : en
Pages : 210

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Book Description
Detailed characterization of fuzzy interactions will be of central importance for understanding the diverse biological functions of intrinsically disordered proteins in complex eukaryotic signaling networks. In this volume, Peter Tompa and Monika Fuxreiter have assembled a series of papers that address the issue of fuzziness in molecular interactions. These papers provide a broad overview of the phenomenon of fuzziness and provide compelling examples of the central role played by fuzzy interactions in regulation of cellular signaling processes and in viral infectivity. These contributions summarize the current state of knowledge in this new field and will undoubtedly stimulate future research that will further advance our understanding of fuzziness and its role in biomolecular interactions.

Concepts of Biology

Concepts of Biology PDF Author: Samantha Fowler
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1409

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Book Description
Concepts of Biology is designed for the typical introductory biology course for nonmajors, covering standard scope and sequence requirements. The text includes interesting applications and conveys the major themes of biology, with content that is meaningful and easy to understand. The book is designed to demonstrate biology concepts and to promote scientific literacy.