Table 2. Structural parameters of microtubules assembled in the presence of different nucleotides and drugs^*.

	Paclitaxel-pre microtubules	Paclitaxel- post microtubules	Paclitaxel- GDP tubulin	GDP-microtubules	GMPCPP-microtubules	Docetaxel-microtubules	Baccatin III-microtubules	2a-microtubules	2b-microtubules
Microtubule radius (nm)	10.97±0.10	11.04±0.51	10.98±0.47	11.42±0.10	11.63±0.10	11.53±0.10	11.06±0.35	11.27±0.57	11.60±0.36
Avg. PF number	12.21±0.10	12.28±0.71	12.23±0.65	12.91±0.10	13.29±0.10	12.90±0.10	12.29±0.39	12.63±0.72	12.99±0.40
Inter-PF distances (nm)	5.58±0.01	5.59±0.33	5.57±0.29	5.50±0.03	5.45±0.03	5.57±0.01	5.61±0.18	5.55±0.31	5.56±0.17
Avg. monomer length (nm)	4.18±0.01	4.18±0.01	4.18±0.01	4.06±0.01	4.18±0.010	4.18±0.01	4.16±0.03	4.15±0.03	4.13±0.03
1 nm band peak position (nm–1)	6.02±0.01	6.02±0.01	6.02±0.01	6.19±0.01	6.02±0.01	6.02±0.01	6.04±0.5	6.06±0.05	6.08±0.05
8 nm band	Yes	Yes	Yes	No	Yes	Yes	Yes	Yes	Yes

^*Errors are SE of three independent.