Table 3. Summary of in vitro motility results.

Actin sliding velocity (± SE)	WT	K104E
Human M2β-S1, n = 3 experiments from three distinct protein preparations, 0.5 µM density	1,036 ± 53	1,043 ± 20
Mouse M2α-full length, n = 3 experiments from three distinct myosin extractions, 0.5 µM density	2,939 ± 278	4,194 ± 163a

^aP < 0.05.