Effects of calponin on force generation by single smooth muscle cells.

Abstract excerpt

Although the actin-binding and actomyosin adenosinetriphosphatase (ATPase) inhibitory properties of calponin are well documented in vitro, its function in the smooth muscle cell has not been elucidated. To address this question, we utilized the ferret aortic smooth muscle cell, which shows a protein kinase C-dependent contraction even at pCa (-log [Ca2+]) 9.0 in the absence of a change in myosin light chain...

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