Abstract
The binding stoichiometry of kinesin to microtubules was determined using several biochemical and biophysical approaches (chemical crosslinking, binding assays, scanning transmission electron microscopy (STEM), image reconstruction, and X-ray scattering). The results show that each tubulin dimer associates with one kinesin head, irrespective of whether kinesin occurs in a monomeric or dimeric form in solution. Moreover, these heads appear to align along the protofilament axis generating a 16 nm periodicity of successive kinesin dimers. This is consistent with a 'tightrope' model of movement where the first head of the dimer provides a guiding signal for the following one.
| Original language | English |
|---|---|
| Journal | Journal of Molecular Biology |
| Volume | 275 |
| Issue number | 5 |
| Pages (from-to) | 795-809 |
| Number of pages | 15 |
| ISSN | 0022-2836 |
| DOIs | |
| Publication status | Published - 06.02.1998 |
Funding
This work was supported by grants from the Deutsche Forschungsgemeinschaft (to E.M.M.), the Swiss National Science Foundation (grant 31-39691.93), the Canton Basel-Stadt, and the M.E. Müller Foundation of Switzerland.