منابع مشابه
Are proteins well-packed?
The average packing density inside proteins is as high as in crystalline solids. Does this mean proteins are well-packed? We go beyond average densities, and look at the full distribution functions of free volumes inside proteins. Using a new and rigorous Delaunay triangulation method for parsing space into empty and filled regions, we introduce formal definitions of interior and surface packin...
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When beta-pleated sheets pack face to face in proteins, the angle between the strand directions of the two beta-sheets is observed to be near -30 degrees . We propose a simple model for beta-sheet-to-beta-sheet packing in concanavalin A, plastocyanin, gamma-crystallin, superoxide dismutase, prealbumin, and the immunoglobin fragment V(REI). This model shows how the observed relative orientation ...
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The relationship between alcuronium requirements and the plasma concentration of albumin and total globulin was investigated in 50 adult patients undergoing elective upper abdominal surgery. No significant correlation was obtained with the plasma proteins (g/100 ml plasma). A significant positive correlation between alcuronium requirements and plasma albumin X (1-PCV), especially in anaemic pat...
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Chemoreceptor arrays are supramolecular transmembrane machines of unknown structure that allow bacteria to sense their surroundings and respond by chemotaxis. We have combined X-ray crystallography of purified proteins with electron cryotomography of native arrays inside cells to reveal the arrangement of the component transmembrane receptors, histidine kinases (CheA) and CheW coupling proteins...
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ژورنال
عنوان ژورنال: Biophysical Journal
سال: 2001
ISSN: 0006-3495
DOI: 10.1016/s0006-3495(01)75739-6