the increased specific activity of ca2+-activated adenosine triphosphatase ( atpase ) of atrial myosin appeared to correlate with the level of the activity of ventricular myosin atpase in the animal , since the same order in atpase activity , as observed in ventricular myosins from various animals , was noted in atrial myosins .
C0001476
ca2
C0001473
atpase