this hybrid s-1 behaved like s-1 ( a1 ) . , at low ionic strength in the presence of actin , this hybrid had a maximal rate of atp hydrolysis about the same as that of s-1 ( a1 ) and about one-half that of s-1 ( a2 ) , while at higher ionic strengths the actin-activated atpases of these three s-2 species were all similar .
C1510699
atp hydrolysis
C0001473
atpases