Download or read book Conformational Properties of Macromolecules written by A Hopfinger and published by Elsevier. This book was released on 2012-12-02 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conformational Properties of Macromolecules provides information about the molecular parameters and spatial and thermodynamic properties of macromolecules and the application of theoretical conformational energy calculations. The book covers topics such as macromolecular geometry, the classification of macromolecular structure, and the generation of macromolecular conformations and configurations; conformational energies and potential functions, induced dipole and polymer-solvent interactions; and conformational transition in molecules. Also covered are topics such as absorption and optical rotation spectroscopies, epitaxial crystallization of macromolecules, and conformational fluctuation in macromolecules. The text is recommended for structural chemists, X-ray crystallographers, biophysicists, physical chemists, and macromolecular scientists who would like to know more about this particular area of knowledge.
Download or read book Dynamic Aspects of Conformation Changes in Biological Macromolecules written by C. Sadron and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 511 pages. Available in PDF, EPUB and Kindle. Book excerpt: On the day after the 1959 Cambridge Congress, during which the International Union of Pure and Applied Biophysics was founded, a biophysics section was formed within the Society of Physical Chemistry (Societe de Chimie Physique). Since then, three of the Society's annual meetings (the 11th, 17th, and 23rd) were devoted exclusively to the physico-chemical study of biological systems. The first of these was held in June 1961 at a hotel in Col de Voza, at the foot of an alpine glacier above Chamonix. The second, in May 1967, took place in the more learned setting of the venerable rooms of the National Museum of Natural History in Paris. The third - the one dealt with in the present volume - was recently held at Orleans-La Source in the newly built lecture theatres of the young University, which is near the great Institutes of the National Centre for Scientific Research (CNRS), on the Sologne plateau. These three stages are milestones of an evolution which characterises (at least schematically) the explosive evolution of biological physico-chemistry. The first colloquium, with the title 'Deoxyribonucleic Acid: Structure, Synthesis and Functions', actually marks the first contact of the physical chemist with one of the then most prestigious biological macromolecules, the structure of which had just been discovered, and in this way celebrated one of the first and most striking successes of molecular biology.
Download or read book Molecular Biology of The Cell written by Bruce Alberts and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Conformations of Macromolecules written by Tatʹi͡ana Maksimovna Birshteĭn and published by . This book was released on 1966 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Conformation of Macromolecules written by Y. G. Medvedevskikh and published by Nova Publishers. This book was released on 2007 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conformation is statistical property of the macromolecules consisting of a number of N structural units, links, position of which in a space one relatively to other is not inflexibly fixed by chemical bonds and assumes the possible random configurations. The number of possible configurations at N ” 1 is so great that permits to use the statistical methods at their analysis. That is why the conformation is a result of statistical averaging on all possible configurations of the macromolecule. It was for a long time notified and confirmed by computer modelling that the conformation of polymeric chain should be described by self-avoiding random walks statistics (SARW) but not Gaussian random walks statistics, assuming the phantom behaviour of polymeric chains. Nevertheless, Gaussian statistics is dominating at the analysis of thermodynamic, dynamic and kinetic stainings of the macromolecules conformation. This book will be useful for scientists who are engaged in the physical chemistry of polymers and their solutions.
Download or read book Conformations of Macromolecules written by Tatʹi͡ana Maksimovna Birshteĭn and published by . This book was released on 1966 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Conformations of Macromolecules written by Herbert Morawetz and published by . This book was released on 1965 with total page 495 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Molecular Conformation and Dynamics of Macromolecules in Condensed Systems written by M. Nagasawa and published by Elsevier. This book was released on 2012-12-02 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: Macromolecular materials possess some remarkable features arising from the fact that their molecules are made up of more or less flexible chains which can have various conformations. The study of molecular conformations and dynamics of macromolecules is important in polymer science and technology from both basic and practical viewpoints. In practice, these studies have concentrated on dilute solutions but more recently there has been a clear trend towards studying molecular properties in condensed systems in order to understand the entire macromolecular system based on a unified concept.Based on lectures presented by an internationally recognized group of polymer scientists at a meeting held in Japan in October 1987 (plus two additional contributions), this volume summarises present knowledge of molecular conformations and dynamics of macromolecules from dilute solutions to various condensed systems. The book is not a random collection of papers of the usual conference proceedings type. Authors prepared their contributions in line with an overall plan for the work, were able to discuss the content with colleagues at the meeting, and finalised their text after the conference. It is thus a comprehensive, integrated overview of the field. Current developments in both theory and experiment are discussed in a well-balanced way. The behaviour of macromolecules at phase transition and interface is discussed in relation to their behaviour in bulk systems.The book offers a particularly up-to-date and authoritative picture of the current state of the art, and will be of interest to all research and professional workers concerned with polymer science in universities, industry, and government institutions.
Download or read book Conformational Theory of Large Molecules written by Wayne L. Mattice and published by Wiley-Interscience. This book was released on 1994-11-04 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ubiquitous computers, coupled with software packages for the visualization and manipulation of atom-based polymer models, also contribute to increased use of the technique.
Download or read book Chain Structure and Conformation of Macromolecules written by Frank Alden Bovey and published by . This book was released on 1982 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chain Structure and Conformation of Macromolecules ...
Download or read book An Introduction to Macromolecules written by L. Mandelkern and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt: The reception of the original volume by students, pedagogues, and reviewers has been most gratifying. It appears to have both satisfied a need and served a useful educational purpose. Hence, some ten years later it has been deemed advisable to bring it up to date, if only in a slightly expanded form. The purpose for writing this book and its level remain the same. Many new polymers have been synthesized in the last decade that have found meaningful and novel uses. Examples of these applications are included in this new edition. Major advances have also been made in biophysics and in molecular biology, as well as in our understanding of natural processes on a molecular level. Foremost among these has been the development of recombinant DNA technology. With it has come the potential for large scale synthesis of hormones and proteins. These new developments have also been incorporated into the present volume. It is my hope that this new edition will still have a widespread appeal to students in all of the natural sciences whatever their major interest. It should also be of use and inter est to those starting industrial or academic careers who have not had an extensive background in macromolecular science.
Download or read book Conformations written by Alan E. Tonelli and published by CRC Press. This book was released on 2020-04-06 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: Among the materials found in Nature’s many diverse living organisms or produced by human industry, those made from polymers are dominant. In Nature, they are not only dominant, but they are, as well, uniquely necessary to life. Conformations: Connecting the Chemical Structures and Material Behaviors of Polymers explores how the detailed chemical structures of polymers can be characterized, how their microstructural-dependent conformational preferences can be evaluated, and how these conformational preferences can be connected to the behaviors and properties of their materials. The authors examine the connections between the microstructures of polymers and the rich variety of physical properties they evidence. Detailed polymer architectures, including the molecular bonding and geometries of backbone and side-chain groups, monomer stereo- and regiosequences, comonomer sequences, and branching, are explicitly considered in the analysis of the conformational characteristics of polymers. This valuable reference provides practicing materials engineers as well as polymer and materials science students a means of understanding the differences in behaviors and properties of materials made from chemically distinct polymers. This knowledge can assist the reader design polymers with chemical structures that lead to their desired material behaviors and properties.
Download or read book Conformations of Macromolecules written by David M. Hercules and published by . This book was released on 1966 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Conformation of Biological Molecules written by G. Govil and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: The determination of the three-dimensional structure of a biological molecule is the starting point in the understanding of molecular mechanisms involved in its complex biochemical reactions. The molecular architecture of multimolecular systems such as membranes and chromosomes provides the key to the fascinating field of molecular biology. Stereochemical details of biological macromolecules and their interactions with pharmacological agents form the basis for drug design. Naturally, the study of the structure and function of biological molecules has aroused tremendous interest and investigations in this area are being carried out in a large number of laboratories. The techniques used for this purpose include both experimental methods (X-ray and neutron diffraction measurements, study of NMR, ESR, vibrational and electronic spectra, ORD, CD and dipole moment measurements, biochemical modifications etc. ) and the oretical methods (quantum mechanical and classical potential energy calculations, Monte Carlo simulations and molecular graphics). F or several years now, X-ray diffraction [1] has served as our only source of infor mation on the three-dimensional arrangements of atoms in biopolymers. Fiber-diffrac tion of DNA led to the proposal of the DNA double helix. Fibers of long~hain polymers show ordering in the direction of the fibre-axis but not in the transverse plane. Accurate estimates of the dimensions of helical structures can be made using techniques on the basis of which models of biopolymers can be constructed.
Download or read book Conformation in Biology and Drug Design written by Sidney Udenfriend and published by Elsevier. This book was released on 2014-05-10 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Peptides: Analysis, Synthesis, Biology, Volume 7: Conformation in Biology and Drug Design focuses on the analysis of peptides, emphasizing the use of physical methods in peptide conformational analysis and the relationship of conformational properties of peptides to biological properties. This book consists of nine chapters. Chapter 1 provides a brief overview of the perspective on the application of physical methods to peptide conformational analysis. The use of circular dichroism (CD) spectroscopy to examine the conformational properties of peptides in solution is elaborated in Chapter 2, while the use of fluorescence spectroscopy to examine the special relationships of aromatic side-chain groups to one another is discussed in Chapter 3. In Chapter 4, the use of various theoretical methods to calculate the conformations of peptides is described. The methods used to stimulate peptide conformations and dynamics are outlined in Chapter 5. The last four chapters examine various aspects of the use of nuclear magnetic resonance (NMR) in peptide conformational analysis. This volume is suitable for biologists, specialists, and researchers interested in peptides and proteins.
Download or read book Conformation of macromolecules written by Tat'iana Maksimovna Birshtein and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Structures and Conformations of Non Rigid Molecules written by J. Laane and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt: From the beginnings of modern chemistry, molecular structure has been a lively area of research and speculation. For more than half a century spectroscopy and other methods have been available to characterize the structures and shapes of molecules, particularly those that are rigid. However, most molecules are at least to some degree non-rigid and this non-rigidity plays an important role in such diverse areas as biological activity, energy transfer, and chemical reactivity. In addition, the large-amplitude vibrations present in non-rigid molecules give rise to unusual low-energy vibrational level patterns which have a dramatic effect on the thermodynamic properties of these systems. Only in recent years has a coherent picture of the energetics and dynamics of the conformational changes inherent in non-rigid (and semi-rigid) molecules begun to emerge. Advances have been made in a number of different experimental areas: vibrational (infrared and Raman) spectroscopy, rotational (microwave) spectroscopy, electron diffraction, and, most recently, laser techniques probing both the ground and excited electronic states. Theoretically, the proliferation of powerful computers coupled with scientific insight has allowed both empirical and ab initio methods to increase our understanding of the forces responsible for the structures and energies of non-rigid systems. The development of theory (group theoretical methods and potential energy surfaces) to understand the unique characteristics of the spectra of these floppy molecules has also been necessary to reach our present level of understanding. The thirty chapters in this volume contributed by the key speakers at the Workshop are divided over the various areas. Both vibrational and rotational spectroscopy have been effective at determining the potential energy surfaces for non-rigid molecules, often in a complementary manner. Recent laser fluorescence work has extended these types of studies to electronic excited states. Electronic diffraction methods provide radial distribution functions from which both molecular structures and compositions of conformational mixtures can be found. Ab initio calculations have progressed substantially over the past few years, and, when carried out at a sufficiently high level, can accurately reproduce (or predict ahead of time) experimental findings. Much of the controversy of the ARW related to the question of when an ab initio is reliable. Since the computer programs are readily available, many poor calculations have been carried out. However, excellent results can be obtained from computations when properly done. A similar situation exists for experimental analyses. The complexities of non-rigid molecules are many, but major strides have been taken to understand their structures and conformational processes.
