This gene encodes a calmodulin- and actin-binding protein that plays an essential role in the regulation of smooth muscle and nonmuscle contraction. The conserved domain of this protein possesses the binding activities to Ca(2+)-calmodulin, actin, tropomyosin, myosin, and phospholipids. This protein is a potent inhibitor of the actin-tropomyosin activated myosin MgATPase, and serves as a mediating factor for Ca(2+)-dependent inhibition of smooth muscle contraction. Alternative splicing of this gene results in multiple transcript variants encoding distinct isoforms. [provided by RefSeq, Jul 2008].
Al-Shboul, Mustafa, Mohammad, Al-Shehabat, Yousef, Al-Hashimi: "Effect of oxidative stress on the expression of thin filament-associated proteins in gastric smooth muscle cells." in: Cell biochemistry and biophysics, Vol. 70, Issue 1, pp. 225-31, (2014) (PubMed).