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. 1976 Aug;80(2):401-3.
doi: 10.1093/oxfordjournals.jbchem.a131290.

Regulatory protein of bovine tracheal smooth muscle

N Ito, K Hotta
Free article

Regulatory protein of bovine tracheal smooth muscle

N Ito et al. J Biochem. 1976 Aug.
Free article

Abstract

Myosin B exhibiting Ca2+ sensitivity in superprecipitation and Mg-ATPase [EC 3.6.1.3] activity was extracted from tracheal smooth muscle. Repeated washing with 2mM KCl and 1 mM NaHCO3 resulted in the loss of these activities. However, on addition of native tropomyosin, the myosin B regained its original properties. Native tropomyosin is the regulatory system in this smooth muscle.

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