2 edition of role of water in structural transitions of biophysical systems. found in the catalog.
role of water in structural transitions of biophysical systems.
Susan A. Csiszar
Written in English
A discontinuous molecular dynamics (DMD) simulation of water is presented in order to form the basis for a future investigation of solvent effects in biomolecular systems. The structure and folding of a solvated protein is partly determined by the interactions of the protein molecules with the water molecules. In order to create a reasonable model of a protein"s folding and structure, solvent effects need to be explicitly included. To date these solvent effects have been studied using continuous potential molecular dynamics (MD) models that describe the interactions in the system. MD models can be quite computationally demanding for large systems or long time scales and we have devised a new water model using DMD which is more efficient than continuous MD methods. The goals of our approach are to describe the local structure and thermodynamics of water in a semi-quantitative fashion.
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Coherence observed in chemical and biological systems suggests that even in the presence of disorder and noise the phenomenon may yield transformative ways for improving by: This role is played by the epidermal barrier with its major part – stratum corneum. The condition of the epidermal barrier depends on individual and environmental factors. The most important biophysical parameters characterizing the status of this barrier are the skin pH, epidermal hydration, transepidermal water loss and sebum by:
This chapter explains the role of water in the biosphere, how water resource systems have evolved in different parts of the world, how water underpins all aspects of life and economic development, and why water has to be actively managed. Current fluctuations in pure lipid membranes have been shown to occur under the influence of transmembrane electric fields (electroporation) as well as a result from structural rearrangements of the lipid bilayer during phase transition (soft perforation). We demonstrate that the ion permeability during lipid phase transition exhibits the same qualitative temperature dependence as the Cited by:
Here structural and biophysical investigations were carried out with a synthetic peptide encompassing the second helix of E. coli TatA (TatAH2) consisting of residues 22 to NMR and CD spectroscopy show that the helical structure of this amphipathic helix in TatA is dependent on the presence of a stable membrane mimetic by: The helix-to-coil denaturation transition in DNA has been investigated in mixed solvents at high concentration using ultraviolet light absorption spectroscopy and small-angle neutron scattering. Two solvents have been used: water and ethylene glycol. The “melting” transition temperature was found to be 94°C for 4% mass fraction DNA/d-water and 38°C for 4% mass fraction DNA/d-ethylene Cited by:
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The role of water The properties of water affect biomolecular interactions Water is the most abundant substance in living systems, making up 70% or more of the weight of most organisms water is polar water is cohesiveFile Size: 5MB.
Abstract. The role of water in life processes is very important but very complex too depending on the structure of liquid water and on the particular physical and chemical properties of this hydride, and also on the interactions between water and biological molecules (hydration water, water interacting with acids and bases, perturbations induced on water by Van der Waals associations, surface Author: A.
Bertoluzza, C. Fagnano, G. Fini, M. Morelli. Some factors (structure factor, H-bond cooperativity) typical of liquid and biological water have been considered. Also, the different roles played by water in biological systems are elucidated and discussed by means of a few general structure models, suitable for explaining the perturbations induced on liquid water by solutes (ionic, acids and bases, apolar) and by: 5.
Also, the different roles played by water in biological systems are elucidated and discussed by means of a few general structure models, suitable for explaining the perturbations induced on liquid water by solutes (ionic, acids and bases, apolar) and by: 5.
Building up from microscopic basics to observed complex functions, this insightful monograph explains and describes how the unique molecular properties of water give rise to its structural and dynamical behaviour which in turn translates into its role in biological and chemical processes.
The discussion of the biological functions of water details not only the stabilising effect of water. You can write a book review and share your experiences. Other readers will always be interested in your opinion of the books you've read.
Whether you've loved the book or not, if you give your honest and detailed thoughts then people will find new books that are right for them. Ions in Water and Biophysical Implications, from Chaos to Cosmos will appeal to physical chemists, biophysicists, biochemists, as well as to all students and researchers involved in the study of.
State shifts in ecological and biophysical systems related to water often involve more than one water function and role. Disturbances in water functions might occur simultaneously, interact, or cascade.
Accordingly, the role of water for inducing regime shifts or linear collapse shifts between being a control, state and driving variable.
Cited by: Biophysical and structural aspects of bioenergetics This product is not available separately, it is only sold as part of a set. There are products in the set and these are all sold as one entity.
Select USE OF TURBIDITY TO DETECT CHANGES IN CELLULAR STRUCTURE: THE RESPONSE OF CELLULAR SLIME MOLD AMOEBAE TO 3′5′ CYCLIC AMP.
Book chapter Full text access. USE OF TURBIDITY TO DETECT CHANGES IN CELLULAR STRUCTURE: THE RESPONSE OF CELLULAR SLIME MOLD AMOEBAE TO 3′5′ CYCLIC AMP. Elmon L. Coe and Wen-Jean Kuo Chung. A unified overview of the dynamical properties of water in relation to its unique and diverse role in biological and chemical processes.
Highlights recent advances in the study of water in complex systems, supported by extensive experimental and computer simulation by: Search the world's most comprehensive index of full-text books. My library. In book: Socio-Metabolic Perspectives on the Sustainability of Local Food Systems, Chapter: Biophysical Analysis of Agri-Food Systems: Scales, Energy Efficiency, Power and Author: Tiziano Gomiero.
This book examines energy storage within a broad historical and technological framework, including both market perspectives and biophysical constraints. Understanding storage from first principles in the contemporary context of electrical grids is crucial to energy transition studies.
Mechanical processes are involved at many stages of the development of living cells, and often external forces applied to a biomolecule result in its unfolding. Although our knowledge of the unfolding mechanisms and the magnitude of the forces involved has evolved, the role that water molecules play in the mechanical unfolding of biomolecules has not yet been fully : Sarah Jacqueline Moe, Alessandro Cembran.
A dynamic role for water in biological systems. Mi K. Hong and Shyamsunder Erramilli. Author information Article notes in this issue provides a succinct account of the role of water in the orchestration of cell machinery. The review also corrects many misunderstandings. and new theoretical ideas borrowed from glass transitions and Cited by: 1.
The role of biophysical cohesion on subaqueous bed form size Article in Geophysical Research Letters 43(4) February with 73 Reads How we measure 'reads'. This book examines changes and transitions in the way water is managed in urban environments.
This book originated from a joint French-Australian initiative on water and land management held in Montpellier, France.
The book delivers practical insights into urban water management. It links scientific insights of researchers with the practical experiences of urban water. The system investigated was lauric acid (LA)/dilauroylphosphatidylcholine (DLPC), at a fixed overall hydration of 50% water by weight.
The phase transition was induced by a pressure jump and. Applications of X-ray computed tomography for examining biophysical interactions and structural development in soil systems: A review Article in European Journal of Soil Science 64(3):n/a-n/a. The structural properties of nanoparticles (NPs) produced from these polymers by a surfactant-free method were assessed by dynamic light scattering, ζ potential, and transmission electron microscopy and found to be controlled by the amount of PEG present in the by: Assembly and fibrillation of amyloid proteins are believed to play a key role in the etiology of various human diseases, including Alzheimer’s, Parkinson’s, Huntington’s and type II diabetes.
Insights into conformational changes and formation processes during amyloid fibrillation are essential for the clinical diagnosis and drug by: Several lines of evidence suggest that the structural features of ceramides, namely their high hydrophobicity and ability to establish strong H-bond network, are responsible for changes in the biophysical properties of biological membranes that can affect the activity of proteins and activate signaling : Ana E.
Ventura, Beatriz Mestre, Liana C. Silva.