By working closely with crystallographers
at the Hauptman-Woodward Institute (HWI), the Structural Molecular Biology
(SMB) group at the Stanford Synchrotron Radiation Laboratory (SSRL) is
perfecting the technology for remote access data collection. The
SSRL SMB group operates six beam lines (BL1-5, BL7-1, BL9-1, BL9-2, BL11-1,
and BL11-3) for macromolecular crystallography experiments. Additionally,
a new undulator station optimized for microcrystal data collection, BL12-2,
is being commissioned. The users of these beam lines have
the option to collect data remotely and, during the 2007 run period,
about 70% of experiments have been scheduled for remote access thereby
saving travel time and expenses. While remaining at their home
institutions, remote users conduct experiments by means of advanced software
tools enabling network-based systems monitoring and control. Remote
users have the capability to mount, center, and screen samples as well
as to collect, analyze, and backup diffraction data. Automated
sample mounting is accomplished with the Stanford Auto-Mounting System
(SAM). In this way, users can screen crystals 2-3 times more rapidly
with less human error. Beam line and experimental control is carried
out using Blu-Ice/DCS software. For rapid crystal ranking and data
analysis, the diffraction images collected during screening are automatically
analyzed, and the results, which include the number of spots, Bravais
lattice, unit cell, estimated mosaicity, and maximum diffraction resolution,
are visible through the Blu-Ice and Web-Ice applications. Using
these tools, crystallographers located at HWI have screened over 1,300
crystals, collected more than 30 data sets, and solved 21 new structures
including a novel membrane protein.
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