REL RCSB RCSB RCSB 2014-03-19 2014-04-16 2014-04-16 2014-05-14 CasA mediates Cas3-catalyzed target degradation during CRISPR RNA-guided interference Hochstrasser ML Taylor DW Bhat P Guegler CK Sternberg SH Nogales E Doudna JA Cascade, CRISPR RNA, Cas3, bacterial immunity Hochstrasser ML Taylor DW Bhat P Guegler CK Sternberg SH Nogales E Doudna JA CasA mediates Cas3-catalyzed target degradation during CRISPR RNA-guided interference. PROC.NAT.ACAD.SCI.USA 111 6618 6623 2014 24748111 doi:10.1073/pnas.1405079111 Cas3 bound to dsDNA-Cascade Cas3 bound to dsDNA-Cascade 1 Cas3: 1 CasA: 2 CasB: 6 CasC: 1 CasD: 1 CasE: 1 crRNA: 1 target dsDNA 8 0.5438 CRISPR-associated endonuclease/helicase Cas3 Escherichia coli K-12 K-12 E. coli 0.100 1 monomer true Escherichia coli BL21(DE3) BL21(DE3) pSV272 P38036 GO:0006200 GO:0051607 GO:0090305 GO:0008152 GO:0003690 GO:0004519 GO:0004386 IPR006483 IPR011545 IPR014001 IPR001650 IPR006474 IPR027417 CRISPR system Cascade subunit CasA Escherichia coli K-12 K12 E. coli 0.0559 1 monomer true Escherichia coli BL21(DE3) BL21(DE3) Q46901 GO:0051607 GO:0003677 GO:0003723 GO:0043234 IPR013381 CRISPR system Cascade subunit CasB Escherichia coli K-12 K-12 E. coli 0.0187 2 dimer true Escherichia coli BL21(DE3) BL21(DE3) P76632 GO:0051607 GO:0003723 GO:0043234 IPR013382 CRISPR system Cascade subunit CasC Escherichia coli K-12 K-12 E. coli 0.040
The 6 CasC subunits make a helical stack forming a groove in which the crRNA lies.
6 helical true Escherichia coli BL21(DE3) BL21(DE3) Q46899 GO:0051607 GO:0003723 GO:0043234 GO:0005515 IPR010148 CRISPR system Cascade subunit CasD Escherichia coli K-12 K-12 E. coli 0.0252 1 monomer true Escherichia coli BL21(DE3) BL21(DE3) Q46898 GO:0051607 GO:0003723 GO:0043234 IPR021124 IPR013422 IPR010147 CRISPR system Cascade subunit CasE Escherichia coli K-12 K-12 E. coli 0.0223 1 monomer true Escherichia coli BL21(DE3) BL21(DE3) Q46897 GO:0051607 GO:0003723 GO:0043234 GO:0006396 GO:0090305 GO:0004519 IPR010179 R44 CRISPR RNA Escherichia coli K-12 K-12 E. coli 0.0186 AUAAACCGACGGUAUUGUUCAGAUCCUGGCUUGCCAACAGGAGUUCCCCGCGCCAGCGGGG OTHER OTHER false 72 bp dsDNA target with R44 protospacer Enterobacteria phage P7 0.0444
This strand is annealed to the complementary non-target strand to form the dsDNA target.
CATGAGGTCCCTCGTTTAGTCTGTTGGCAAGCCAGGATCTGAACAATACCGTCATCGGAGGTACGATCAAGG DNA DOUBLE HELIX true singleParticle particle 0.08 7.5
20 mM HEPES, 150 mM KCl, 5% glycerol, 1 mM NiCl2, 1 mM MgCl2
 NEGATIVE
After adsorption for 1 min, the samples were stained consecutively with five droplets of 2% (w/v) uranyl acetate solution, blotted to remove residual stain, and air-dried in a fume hood.
400 mesh continuous carbon grids
 NONE OTHER FEI TECNAI 20 FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 120 2.3 -0.5 -1.4 80000.0 SIDE ENTRY, EUCENTRIC 78 Objective lens astigmatism was corrected at 100,000 times magnification. 0
Data acquired using Leginon.
2013-09-05 GATAN ULTRASCAN 4000 (4k x 4k) 274 20 Single tilt room temperature holder 0 0
Image pre-processing performed in Appion. Particles were selected using template-based picking in Appion.
Whole micrograph
 OTHER 20.0 OTHER EMAN2, SPARX 11000 emd_5930.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 176 176 176 -88 -88 -88 176 176 176 492.8 492.8 492.8 90.0 90.0 90.0 X Y Z -10.398164749999999 16.999780650000002 0.0 0.99999994 2.8 2.8 2.8 5.13 AUTHOR Reconstruction of negatively-stained Cas3-dsDNA-Cascade complex
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