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Unformatted text preview: roads , and, like all vehicles , the
cellâ€™s m oving parts need engines . Phys icis ts and biologis ts have looked â€˜under the hoodâ€™ of the cell
and laid out the nuts and bolts of m olecular engines .
The ability of s uch engines to convert chem ical energy into m otion is the envy of the nanotechnology
res earchers looking for ways to power m olecule-s ized devices . Medical res earchers als o want to unders tand
how thes e engines work. Becaus e thes e m olecules are es s ential for cell divis ion, s cientis ts hope to s hut down
the ram pant growth of the cancer cells by deactivating certain m otors . Im proving m otor-driven trans port in nerve
cells m ay als o be helpful for treating dis eas es s uch as Alzheim erâ€™s , Parkins onâ€™s or ALS, als o known
as Lou Gehrigâ€™s dis eas e.
We wouldnâ€™t m ake it far in life without m otor proteins . Our m us cles wouldnâ€™t contract. We couldnâ€™t
grow, becaus e the growth proces s requires cells to duplicate their m achinery and pull the copi...
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This document was uploaded on 03/23/2014.
- Summer '14