title: Involvement of an acidic protein in regulation of smooth muscle contraction by the tropomyosin-leiotonin system.
abstract: An acidic Ca-binding protein of about 18,000 dalton, different from both modulator protein and troponin C, was found to be involved in the regulatory mechanism of smooth muscle contraction by the tropomyosin-leiotonin system.
mesh_terms: D000818:Animals; D002645:Chickens; D005895:Gizzard, Avian / Q000378:metabolism; D007700:Kinetics; D008970:Molecular Weight; D009119:Muscle Contraction; D009124:Muscle Proteins / Q000502:physiology*; D009132:Muscles / Q000378:metabolism; D011817:Rabbits; D014335:Tropomyosin / Q000502:physiology*
chemical_list: D009124:Muscle Proteins; D014335:Tropomyosin