REL RCSB RCSB RCSB 2014-10-27 2014-11-26 2014-12-17 2014-12-24 Essential Structural and Functional Roles of the Cmr4 Subunit in RNA Cleavage by the Cmr CRISPR-Cas Complex Ramia NF Spilman M Tang L Shao Y Elmore J Hale C Cocozaki A Bhattacharya N Terns RM Terns MP Li H Stagg SM CRISPR, Cmr complex, RNA interference, Cmr proteins Ramia NF Spilman M Tang L Shao Y Elmore J Hale C Cocozaki A Bhattacharya N Terns RM Terns MP Li H Stagg SM Essential Structural and Functional Roles of the Cmr4 Subunit in RNA Cleavage by the Cmr CRISPR-Cas Complex Cell Reports 9 1610 1617 2014 25482566 doi:10.1016/j.celrep.2014.11.007 Filament of Cmr4 and Cmr5 Filament of Cmr4 and Cmr5 2 Cmr4 Pyrococcus furiosus true Escherichia coli Cmr5 Pyrococcus furiosus true Escherichia coli helical helicalArray 7.4
20 mM Tris-HCl, pH 7.4, 500 mM NaCl, 5% v/v glycerol, 5 mM beta-mercaptoethanol
400 mesh Quantifoil grid with 2-micron holes
 ETHANE 100 FEI VITROBOT MARK IV
Filaments were prepared for cryoEM by heating a sample of Cmr4-5 to 70 degrees C for 15 minutes and cooling to room temperature over 10 minutes.
 FEI TITAN KRIOS FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 120 2.7 1.7 3.3 59000.0 FEI TITAN KRIOS AUTOGRID HOLDER Objective lens astigmatism was corrected at 150,000 times magnification. 0 2013-06-19 GATAN ULTRASCAN 4000 (4k x 4k) 1866 15
Featureless cylinder was refined by projection and cross correlation with EMAN1, correspondence analysis with Spider, and helical symmetry refinement with IHRSR.
24.7 48.2 C1 OTHER 13.0 OTHER EMAN1, Spider, IHRSR
phase flip of each particle
 emd_6167.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 96 96 96 -48 -48 -48 96 96 96 266.88 266.88 266.88 90.0 90.0 90.0 X Y Z -5.21389723 7.38952255 0.03401719 1.03925931 2.78 2.78 2.78 3.3 EMDB Helical reconstruction of Cmr4-5 filament
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 emd_6167_fsc.xml