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Nature Cell Biology 5, 1043–1044 (1 December 2003) | doi:10.1038/ncb1203-1043

Kinesin: walking or limping?

Manfred Schliwa

Molecular motors use polymer tracks to move cellular cargoes around the cell. One such motor — conventional kinesin — is a dimer composed of two heavy chains that travels long distances on microtubules by taking 8-nm steps from one tubulin subunit to the next.