the actin-activated mg2+-atpase activity of phosphorylated acanthamoeba myosin i was previously shown to be cooperatively dependent on the myosin concentration ( albanesi , j. p. , fujisaki , h. , and korn , e. d. ( 1985 ) j. biol . chem . 260 , 11174-11179 ) .
C0086669
myosin i
C0027096
myosin