REL RCSB RCSB RCSB 2011-06-09 2011-06-13 2011-09-12 2013-07-17 Structures of the RNA-guided surveillance complex from a bacterial immune system Wiedenheft B Lander GC Zhou K Jore MM Brouns SJJ van der Oost J Doudna JA Nogales E Cascade, bacterial immune system, CRISPR, RNA-guided, ribo-nucleoprotein, ssRNA Wiedenheft B Lander GC Zhou K Jore MM Brouns SJ van der Oost J Doudna JA Nogales E Structures of the RNA-guided surveillance complex from a bacterial immune system. NATURE 477 486 489 2011 21938068 doi:10.1038/nature10402 E. coli Cascade complex E. coli Cascade complex
The sample was monodisperse.
one asymmetric complex 1 0.405 0.405 Theoretical Cascade 1 Monomer GO:0051607 true Escherichia coli K12 Escherichia coli 0.405 0.405 Escherichia coli singleParticle particle 1.2 7.5
25 mM HEPES, 100 mM KCl, 1 mM TCEP
200 mesh Cu grid
 ETHANE 95 78 OTHER
Vitrification instrument: Vitrobot. blotting at 4 degrees C
4 microliter aliquot of purified sample placed onto C-flat that had been glow-discharged in a nitrogen atmosphere for 60 sec using an Edwards Carbon Evaporator. The grids were blotted for 3 seconds using a blotting offset of -1. FEI TECNAI F20 FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 120 2.2 0.8 2.5 100000.0 GATAN LIQUID NITROGEN 78 78 78 2010-09-17 GENERIC GATAN (4k x 4k) 2370 20 Side entry liquid nitrogen-cooled cryo specimen holder
From an initial set of 498137 automatically selected particles. Pre-processed with Appion.
whole micrograph
 OTHER 8.8 FSC 0.5 CUT-OFF EMAN2 SPARX 275573 emd_5314.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 144 144 144 -72 -72 -72 144 144 144 331.19998 331.19998 331.19998 90.0 90.0 90.0 X Y Z -13.261092189999999 19.555309300000001 0.03946149 0.45303169 2.3 2.3 2.3 2.0 AUTHOR reconstructed density of the E. coli cascade complex at 8 Angstroms resolution
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