Tel Aviv University

Tel Aviv University
Condensed Matter Theory Seminar

Academic Year  2003 - 2004

The seminar is held in Room 204 in the Shenkar Physics Building, every Monday at 16:00


December 22, 2003

"Dynamics of Molecular Motors on Heterogeneous Tracks"

Dr. Yariv Kafri
Dept. of Physics, Harvard University

     There are many biological functions that involve movement of motors along a filament or polymeric molecule. The motors use chemical energy to propel themselves along the track. The interpretation of single molecule experiments which study them is in many cases model based. These models typically ignore the effect of the heterogeneous track (such as DNA). Independent of the microscopic details, these descriptions lead to a motion described by a biased random walker.

      Using exact results and general arguments it will be shown that disorder leads to anomalous dynamics of motors. Most notably, experiments should exhibit a region where the displacement of the motor as a function of time grows sublinearly. The implications on the interpretation of experiments on RNA polymerase, DNA polymerase / exonuclease and others will be discussed.  

Host: Dr. Ron Lifshitz, x5145
Fall 2003 Schedule Spring 2004 Schedule

For more information or for directions to 204 Shenkar please contact: Chava Balson  03-6408300

To suggest potential speakers or register feedback contact:  Ron Lifshitz  03-6405145

Sponsored by:   The Condensed Matter Physics Department, The School of Physics & Astronomy, Tel Aviv University.