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No. 2, pt. 2 of November issue each year from v. 19-47; 1963-70 and v. 55- 1972- contain the Abstracts of papers presented at the annual meeting of the American Society for Cell Biology, 3d-10th; 1963-70 and 12th- 1972- .
Methods for Obtaining X-Ray Diffraction Patterns from Drosophila 198 Diffraction Patterns from Drosophila IFM 203 Concluding Remarks 211 Note Added in Proof 211 17. Functional and Ecological Effects of Isoform Variation in Insect Flight Muscle 214 James H. Marden Abstract 214 Introduction 215 Nature's Versatile Engine 215 The Underlying Genetics: An Underinflated Genome and a Hyperinflated Transcriptome and Proteome 216 Functional Effects of Isoform Variation 219 Alternative Splicing and the Generation of Combinatorial Complexity 220 Functional Consequences of Naturally Occurring Isoform Variation 220 18. Muscle Systems Design and Integration 230 Fritz- OlafLehmann Abstract 230 Power Requirements for Flight 230 Power Reduction 233 Power Constraints on Steering Capacity 234 Balancing Power and Control 236 Changes in Muscle Efficiency in Vivo 238 Concluding Remarks 239 From the Inside Out 19. Molecular Assays for Acto-Myosin Interactions 242 John C. Sparrow and Michael A. Geeves Abstract 242 Introduction 242 Myosin Purification and Preparation of the SI Fragment 243 Purification of Flight Muscle Actin 244 Assays of Myosin and Acto-Myosin 244 Major Conclusions Relating to the Enzymatic Properties of Insect Flight Muscle Acto-Myosin 247 Major Questions about Insect Flight Muscle Acto-Myosin Kinetics That Remain 249 20.
This volume presents the proceedings of a muscle symposium, which was supported by the grant from the Fujihara Foundation of Science to be held as the Fourth Fujihara Seminar on October 28 -November 1, 2002, at Hakone, Japan. The Fujihara Seminar covers all fields of natural science, while only one proposal is granted every year. It is therefore a great honor for me to be able to organize this meeting. Before this symposium, I have organized muscle symposia five times, and published the proceedings: " Cross-bridge Mechanism in Muscle Contraction (University of Tokyo Press, 1978), "Contractile Mechanisms in Muscle" (plenum, 1984); "Molecular Mechanisms of Muscle Contraction" (plenum, 1988); "Mechanism of MyofIlament Sliding in Muscle contraction" (plenum, 1993); "Mechanisms of Work Production and Work Absorption in Muscle" (plenum, 1998). As with these proceedings, this volume contains records of discussions made not only after each presentation but also during the periods of General Discussion, in order that general readers may properly evaluate each presentation and the up-to-date situation of this research field. It was my great pleasure to have Dr. Hugh Huxley, a principal discoverer of the sliding fIlament mechanism in muscle contraction, in this meeting. On my request, Dr. Huxley kindly gave a special lecture on his monumental discovery of myofIlament-lattice structure by X-ray diffraction of living skeletal muscle. I hope general readers to learn how a breakthrough in a specific research field can be achieved.
Muscular contraction provides one of the most fascinating topics for a biophysicist to study. Although muscle comprises a molecular machine whereby chemical energy is converted to mechanical work, its action in producing force is something that is readily observable in everyday life, a feature that does not apply to most other structures of biophysical inter est. In addition, muscle is so beautifully organized at the microscopic level that those important structural probes, electron microscopy (with the associated image analysis methods) and X-ray diffraction, have pro vided a wealth of information about the arrangements of the constituent proteins in a variety of muscle types. But, despite all this, the answer to the question "How does muscle work?" is still uncertain, especially with regard to the molecular events by which force is actually generated, and the question remains one of the major unsolved problems in biology. With this problem in mind, this book has been written to collect together the available evidence on the structures of the muscle fila ments and on their arrangements in different muscle cells, to extract the common structural features of these cells, and thus to attempt to define a possible series of mechanical steps that will describe at molecular resolu tion the process by which force is generated. The book cannot be considered to be an introductory text; in fact, it presents a very detailed account of muscle structure as gleaned mainly from electron microscopy and X-ray diffraction.
The different aspects of muscle development are considered from cellular, molecular and genetic viewpoints, and the text is supported by black/white and color illustrations. The book will appeal to those studying muscle development and muscle biology in any organism.
Sliding Filament Mechanism in Muscle Contraction: Fifty Years of Research covers the history of the sliding filament mechanism in muscle contraction from its discovery in 1954 by H.E. Huxley through and including modern day research. Chapters include topics in dynamic X-ray diffraction, electron microscopy, muscle mechanisms, in-vitro motility assay, cardiac versus smooth muscle, motile systems, and much more.