Month: October 2008

Structures of Mre11-DNA reveal key steps in DNA repair

An excellent paper came out today in the Oct 3rd issue of Cell detailing structural, biochemical, and genetic studies of the Mre11-DNA complex and its role in detecting and repairing double-strand breaks in DNA. Both the SAXS and crystallography data were collected at the SIBYLS beamline. There is also a nice writeup by Paul Preuss…
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Monochromator Theta 2 Repair

The SIBYLS beamline Kohzu monochromator has often exhibited hysteresis when moving the theta 2 motor. This manifests itself in a decaying beam and suboptimal intensity. In order to fully understand the problem it helps to have a general understanding of the motors in the monochromator. The figure below illustrates the various motors and their relative…
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