Demonstrates that Ca2+ regulation of aorta smooth muscle contraction requires an 80,000 dalton factor and tropomyosin, and provides a method for pure actin preparation.
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Does not support clinical changes in vascular therapy; leaves open the 80 kDa factor's role in human aortic smooth muscle.
Regulation of aorta smooth muscle contraction by Ca ion requires the collaboration of the 80,000 dalton factor and tropomyosin. A method for preparing pure actin from aorta smooth muscle is described.
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Hirata et al. (1977) studied this question.
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