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Molecular motors and brakes work together in cells

to the end of the track it remains attached to the end of mother microtubule. At the tail end, it stops moving and that defines the region of overlap. Our work shows that the cell can make microtubule structures of defined lengths stable by coordinating the sliding of the motors and the slowing of the brakes."

If microtubule-based structures are not formed properly because of failures in brakes or motors, such basic functions as cell division and cell transport can go awry, with such diseases as cancer and dementia possibly resulting. "For the first time we have shown how MAPs and motors work together in a mechanistic way," says Tran. "This is important and it will make other people who study microtubules rethink how they study the cell."


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Contact: Karen Kreeger
karen.kreeger@uphs.upenn.edu
215-349-5658
University of Pennsylvania School of Medicine
30-Jan-2007


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