Bruker AXS X8 Prospector Ultra microfocus IµS sealed-tube X-ray generator featuring a highly sensitive charge coupled device (CCD) APEX II detector for rapid data acquisition and crystal analysis (MC 1-6811). The X-ray facility was recently upgraded in 2010 by an NIH/NCRR shared instrument grant (1S10 RR026501) worth $477,916 awarded to Dr. Joseph Wedekind.
The state-of-the-art system from Bruker AXS comprises an I(μ)S microfocus sealed tube Cu(Kα) X-ray source, integrated optics, and a highly sensitive APEX II CCD detector that can read out diffraction images in ˜1 sec. An Oxford 700-series cold stream is available to cool crystals to 100 K for data collection.
Close up of X8 Prospector I(μ)S microfocus sealed tube Cu(Kα) X-ray source, integrated optics, and APEX II CCD detector.
In addition, the upgraded system includes a
point-and-click motorized goniometer head for rapid sample centering. The CCD detector is mounted on a 4-circle platform to rapidly obtain the most complete data sets. The 0.120 mm beam size produced by Bruker's multilayer Quazar optic is well suited for small crystals. The system can resolve a 295 Angstrom unit cell for challenging applications. A Mosquito liquid-handling robot (TTP LabTech) is available for rapid setup of nanoliter-scale crystallization experiments.
Nearby temperature-controlled rooms equipped with microscopes are available for crystal growth, documentation and mounting. The associated computational and stereographics facility houses several Linux and Mac workstations. Graphics and computational packages include: Coot, O, PyMol, CNS, CCP4, Phenix, SOLVE/RESOLVE, and HKL2000. The X-ray facility is located in the Department of Biochemistry & Biophysics. The executive director is Dr. Joseph Wedekind.