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Parvalbumin is a small (Mr 12,000), acidic (pI 4-5), Ca2+-binding protein of the EF-hand superfamily, that is very important from several points of view. First of all, this protein takes part in Ca2+ regulation of activity of some types of muscle cells, neurons and some other types of cells. At the same time, the exact physiological role of parvalbumin in some of these cells is not clear enough now. Second, parvalbumin has two high affinity Ca2+ binding sites and for this reason it is frequently used as a simple model Ca2+ binding protein. It is convenient for studies of effects of interactions between two calcium binding sites and is very useful for studies of calcium binding effects on int...
Since the publication of the first edition of Food, Energy, and Society, the world's natural resources have become even more diminished due to the rapid expansion of the global human population. We are faced with dwindling food supplies in certain geographic areas, increasing pressure on energy resources, and the imminent extinction of many
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