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Effects of myosin-binding drugs on pyrene-labeled F-actin (PFA) fluorescence. About 5 μM of omecamtiv mecarbil (OM) (purple) and mavacamten (Mava) (pink) on the fluorescence of 2 μM PFA (left, gray) and 2 μM PFA.S1 in the absence (green, middle) and presence (red, right) of 1 mM MgATP.
