[Participation of a phosphatase in the Ca regulation in actomyosin preparations from smooth vascular muscle].
The superprecipitation of actomyosin from the A. carotis of cattle is suppressed by a phosphatase containing protein fraction. This inhibition is compensated by ammonium molybdate, an inhibitor of phosphatase activity. The results are related to a phosphorylation-dephosphorylation cycle to realize the Ca-sensitivity of superprecipitation of the actomyosin.
D000205:Actomyosin / Q000378:metabolism*; D000818:Animals; D002118:Calcium / Q000494:pharmacology*; D002339:Carotid Arteries / Q000378:metabolism; D002417:Cattle; D008982:Molybdenum / Q000494:pharmacology; D009131:Muscle, Smooth, Vascular / Q000378:metabolism*; D010744:Phosphoric Monoester Hydrolases / Q000378:metabolism*; D010766:Phosphorylation; D000644:Quaternary Ammonium Compounds / Q000494:pharmacology
D000644:Quaternary Ammonium Compounds; D008982:Molybdenum; D000205:Actomyosin; D010744:Phosphoric Monoester Hydrolases; C022175:ammonium molybdate; D002118:Calcium
Zur Beteiligung einer Phosphatase an der Ca-Regulation von Aktomyosinpräparaten aus glatter Gefässmuskulatur.