β_P and α_P distributions for myoV-6IQ and myoV-4IQ. Histograms of the β_P and α_P angles were collected from the mean angles in states that were visited during individual runs of myoV-6IQ (top: n = 73 molecules and states = 515) and myoV-4IQ (bottom: n = 49 molecules and states = 246). The beginning and end of each dwell were defined by the transitions in β_P. Histograms are normalized so that the total area of the distribution is equal to one. (A) β_P distributions: Each of these distributions was best fit by a bimodal Gaussian equation; the resulting parameters are given in Table 2. (B) α_P distributions.