In vitro motility and laser trap assays:
Set-up used to measure the molecular mechanics of single myosin molecular motors while interacting with actin filaments, decorated or not by actin regulatory proteins (caldesmon, calponin and tropomyosin). The velocity of actin propulsion by myosin and the force of binding of myosin to actin can be measured with the in vitro motility and laser trap assays, respectively.