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All tied up: Tethered protein provides long-sought answer
Date:9/22/2009

at two sites.

DNA looping was measured directly by employing single-molecule techniques in the biophysics laboratory at the European Laboratory for Nonlinear Spectroscopy (LENS). The LENS team was led by Francesco Pavone. Lab postdoctoral researcher Danielis Rutkauskas adapted the methods to optimally measure the looping behavior of lactose repressor with different degrees of structural constraint.

"Our findings are important, but there is clearly more work to be done," Vanzi said. "We've found that limiting flexibility indeed limits protein function in this case. Now we need to apply our methods more broadly to see if this applies in other cases as well. We are also very excited about the dawn of single-molecule biophysical methods being applied inside living cells. Interdisciplinary approaches at the edge between physics and biochemistry are proving very powerful, and the months I spent at Rice were a blast."


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Contact: Jade Boyd
jadeboyd@rice.edu
713-348-6778
Rice University
Source:Eurekalert  

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