Table 1.

Summary of Optimal Kinetic Values Obtained in the Absence of Profilin by Fitting with Eq. 1

	ATP	ADP
kon (μM−1 s−1)	21 ± 0.40	3.6 ± 0.04
koff (s−1)	1.3 ± 1.1	3.9 ± 1.3
P0c (p0depoly)	0.29 ± 0.04	0.61 ± 0.04

Values were obtained by global fit of the low- and high-tension experiment elongation rates shown in Fig. 3, A and B, with Eqs. 1 and 2′, and the values correspond to the fitting curves (straight lines) in these figures. Fitting was performed using the software Origin (OriginLab, Northampton, MA). Values given are mean ± SE.