Expression of myosin in atrial areas of the bovine myocardium.
1. A comparison of myosins from defined areas of the bovine atrial myocardium was performed by measuring Ca2+-ATPase activity and electrophoretic separation of myosin light chains. 2. Some areas of atrial myocardium contained myosin with slightly higher ATPase activity than others. 3. There were also clear differences in the amount of one ventricular light chain of myosin in defined regions of atrial myocardium. 4. No close relationship existed between the expression of ventricular and atrial myosin light chains and myosin ATPase activity.
Syrový
I
I
Institute of Physiology, Czechoslovak Academy of Sciences, Prague.
D000818:Animals; D000252:Calcium-Transporting ATPases / Q000032:analysis; D002417:Cattle / Q000502:physiology*; D006325:Heart Atria; D009206:Myocardium / Q000032:analysis* / Q000201:enzymology; D009218:Myosins / Q000032:analysis*
D009218:Myosins; D000252:Calcium-Transporting ATPases