Table 2.

Steady–state actin-dependent ATPase activities of chimeric myosins

Myosins	Actin-dependent MgATPase		Fold activation by RLC phosphorylation
	No kinase treatment	Kinase treatment
Wild-type	0.11	0.85	7.7
Chimera A	1.9	2.3	1.2
Chimera B	1.7	2.0	1.2

Activities were measured in the presence of 24 μM actin and 85 μg/ml myosin and are shown as P_i liberated per head per s.