TABLE 1.

Radius of curvature of microtubule gliding tracks on dynein d-coated glass slides in the presence of various concentrations of nucleotides

	[ATP]	0.1	0.5	1.0	0.1	0.1	0.1	0.1
Nucleotide conditions (mM)	[ADP]	0.1	0.1	0.1	0	0.1	0.4	0.7
Change in orientation a (rad/s)		0.025	0.029	0.021	0.032	0.023	0.016	0.013
Gliding speed v (μm/s)†		2.4 (0.4)*	2.9 (0.4)	2.2 (0.6)	2.7 (0.4)	2.5 (0.6)	2.0 (0.4)	1.4 (0.2)
Radius of the curvature r = v/a (μm)		96 (16)	100 (13)	105 (29)	85 (13)	109 (26)	125 (25)	108 (15)

^*Numbers in parentheses are standard deviations.

^†Gliding velocities of ∼15 microtubules were measured for each condition.