Results 251 to 260 of about 2,181,626 (304)
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Energy of Contraction in Muscle
Human Factors: The Journal of the Human Factors and Ergonomics Society, 1963A large body of the present day theory of production and absorption of work and heat by the contracting muscle is inferred from the experimental study of excised amphibian muscle at 0°. The question arises as to how well the results apply to in situ human muscles.
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Muscle contraction and muscle proteins [PDF]
Proceedings of the Royal Society of London. Series B - Biological Sciences, 1950 There are three ways in which we can gain knowledge of the change of protein structure connected with muscular contraction. The first way is the observation of the contracting muscle itself. The changes of structural qualities and their time sequence have to be investigated. I take it that the excellent information which we have at present
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Structural Mechanism of Muscle Contraction
Annual Review of Biochemistry, 1999▪ Abstract X-ray crystallography shows the myosin cross-bridge to exist in two conformations, the beginning and end of the “power stroke.” A long lever-arm undergoes a 60° to 70° rotation between the two states. This rotation is coupled with changes in the active site (OPEN to CLOSED) and phosphate release.
Geeves, M., Holmes, K.
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Muscle Contraction and Fibrous Muscle Proteins
1952Publisher Summary This chapter deals with the contraction of different kinds of muscle that show differences with respect to the amount of tension developed, the maximum shortening, the rate of shortening, and the fuel requirement. These differences not only reflect the varying levels of evolutionary development, but also a considerable adaptation to
Hans H. Weber, Hildegard Portzehl
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Novartis Foundation symposium, 1998
Understanding muscle contraction goes to the heart of one of the fundamental questions posed by classical philosophy, namely the nature of the pi nu epsilon upsilon mu alpha psi nu chi iota kappa omicron nu. The nature of 'understanding' has altered greatly during the last two millenia, particularly in response to the development of the concept of ...
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Understanding muscle contraction goes to the heart of one of the fundamental questions posed by classical philosophy, namely the nature of the pi nu epsilon upsilon mu alpha psi nu chi iota kappa omicron nu. The nature of 'understanding' has altered greatly during the last two millenia, particularly in response to the development of the concept of ...
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Muscle Filament Structure and Muscle Contraction
Annual Review of Biophysics and Bioengineering, 1975Research into the mechanism of muscle contraction has reached a very intriguing stage. It now seems likely that all types of muscle may operate in basically the same way. But despite the present detailed knowledge of the molecular arrangements in certain muscles, the precise way in which a muscle generates force is still a mystery. According to the now
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Regulation of smooth muscle contraction by the epithelium: role of prostaglandins.
Physiology, 2011As an analog to the endothelium situated next to the vascular smooth muscle, the epithelium is emerging as an important regulator of smooth muscle contraction in many vital organs/tissues by interacting with other cell types and releasing epithelium ...
Y. Ruan, Wen-liang Zhou, H. Chan
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The Molecular Mechanism of Muscle Contraction
2005Publisher Summary This chapter describes the analysis of the polymorphism of the myosin crossbridge and relates it to the Lymn–Taylor crossbridge cycle. Myosin from muscle (myosin II) consists of two long polypeptide chains (heavy chains) combined with four light chains.
Geeves, M., Holmes, K.
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A Molecular Model for Muscle Contraction
Acta Crystallographica Section A Foundations of Crystallography, 1998The molecular mechanism of muscle contraction has been elucidated by a combination of electron microscopy, biochemistry and X-ray diffraction from fibres and crystals. Protein crystallography provided the essential molecular anatomy for understanding this problem. Synchrotron radiation has played a crucial role.
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Congenital myopathies: disorders of excitation–contraction coupling and muscle contraction
Nature Reviews Neurology, 2018H. Jungbluth +8 more
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