Fractionation of protein components from beer by density gradient centrifugation
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Native fractionation: isolation of native membrane-bound protein complexes from porcine rod outer segments using isopycnic density gradient centrifugation.
Networks of interacting protein control physiological processes in all living cells. Considerable effort has recently been invested in understanding protein interactions under normal and diseased conditions. One approach to elucidate the composition of protein complexes is native fractionation followed by immunological or MS-based identification of individual compounds. Native fractionation, in...
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Most protocols for yeast subcellular fractionation involve the use of mechanical shear forces to lyse the spheroplasts produced by the enzymatic digestion of the Saccharomyces cerevisiae cell wall. These mechanical homogenization procedures often involve the manual use of devices such as the Dounce homogenizer, and so are very operator-dependent and, in consequence, lack reproducibility. Here, ...
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Using a colloidal silica density gradient, HeLa cells in mitosis were found to have a density of 1.040-1.046 g/cc, lighter than the remaining interphase cells. The mitotic cells could be harvested and cultured after centrifugation, showing growth synchrony by measurement of a peak in mitotic index 21 hr after establishing the culture. By using Colcemid or vinblastine sulfate, HeLa cells were ar...
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Rubella virus was centrifuged in sucrose density gradients. One of two densities could be ascribed to the virus, depending upon the suspending medium used. The virus was found at a density of 1.16 g/cm(3) after centrifugation for 18 hr in sucrose gradients prepared in distilled water. By contrast, when the sucrose gradients were prepared in tris(hydroxymethyl)aminomethane (Tris)buffer containin...
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ژورنال
عنوان ژورنال: Carlsberg Research Communications
سال: 1982
ISSN: 0105-1938
DOI: 10.1007/bf02907874