8B2X

Structure of the type I-G CRISPR effector


ELECTRON MICROSCOPY

Refinement

RMS Deviations
KeyRefinement Restraint Deviation
f_dihedral_angle_d12.794
f_angle_d0.677
f_chiral_restr0.038
f_plane_restr0.006
f_bond_d0.002
Sample
Type I-G cascade complex large subunit CSX17 protein
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification InstrumentFEI VITROBOT MARK IV
Cryogen NameETHANE
Sample Vitrification Detailsblot time 3.5, blot force 4
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles415000
Reported Resolution (Å)8
Resolution MethodFSC 0.143 CUT-OFF
Other DetailsMulti-body refinement.
Refinement Type
Symmetry TypePOINT
Map-Model Fitting and Refinement
Id1
Refinement SpaceREAL
Refinement ProtocolFLEXIBLE FIT
Refinement TargetCorrelation Coefficient
Overall B Value188
Fitting Procedure
Details
Data Acquisition
Detector TypeGATAN K3 BIOQUANTUM (6k x 4k)
Electron Dose (electrons/Å**2)50
Imaging Experiment1
Date of Experiment
Temperature (Kelvin)
Microscope ModelFEI TITAN KRIOS
Minimum Defocus (nm)1600
Maximum Defocus (nm)2800
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS2
Imaging ModeBRIGHT FIELD
Specimen Holder ModelFEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification105000
Calibrated Magnification105000
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)300
Imaging Details
EM Software
TaskSoftware PackageVersion
IMAGE ACQUISITIONEPU
CTF CORRECTIONCTFFIND4
MODEL FITTINGFlex-EM
MODEL FITTINGISOLDE
MODEL FITTINGUCSF ChimeraX
MODEL REFINEMENTPHENIX1.20
INITIAL EULER ASSIGNMENTRELION4
FINAL EULER ASSIGNMENTRELION4
CLASSIFICATIONRELION4
RECONSTRUCTIONRELION4
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
PHASE FLIPPING ONLY1000