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Science  19 Feb 1999:
Vol. 283, Issue 5405, pp. 1079
DOI: 10.1126/science.283.5405.1079e

If a picture is worth a thousand words, find out what your colleagues are talking about when they describe a form of kinesin, a motor molecule, lacking one of its two heads. This week, the supplemental data to the report on p. 1152 by Okada and Hirokaway includes a video of the crippled protein taking steps along a microtubule‚ÄĒoverturning prevailing wisdom about how kinesin moves.

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