ELECTRON MICROSCOPY

Sample

Pre-dicing state of mouse somatic dicer with pre-mir-15a and TARBP2

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument FEI VITROBOT MARK IV
Cryogen Name ETHANE
Sample Vitrification Details Described in STAR methods
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 437518
Reported Resolution (Å) 3.81
Resolution Method FSC 0.143 CUT-OFF
Other Details ?
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
Refinement Space REAL
Refinement Protocol FLEXIBLE FIT
Refinement Target Correlation coefficient
Overall B Value 189.2
Fitting Procedure ?
Details Initial model used from PDB ID:7ZPJ TARBP2 dsRBD domain 1: initial model from PDB ID:7ZPJ TARBP2 dsRBD domains 2,3: manually fitted into EM map according to map density
Data Acquisition
Detector Type GATAN K3 BIOQUANTUM (6k x 4k)
Electron Dose (electrons/Å2) 60.198
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model FEI TITAN KRIOS
Minimum Defocus (nm) 800
Maximum Defocus (nm) 3500
Minimum Tilt Angle (degrees) ?
Maximum Tilt Angle (degrees) ?
Nominal CS ?
Imaging Mode BRIGHT FIELD
Specimen Holder Model ?
Nominal Magnification ?
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details ?
Imaging Experiment
Task Software Package Version
CTF CORRECTION cryoSPARC v3.3.1
MODEL FITTING UCSF Chimera 1.15
CLASSIFICATION cryoSPARC v3.3.1
RECONSTRUCTION cryoSPARC v3.3.1
MODEL REFINEMENT ISOLDE 1.1.0
MODEL REFINEMENT PHENIX 1.19.2-4158
MODEL REFINEMENT Coot 0.9.6
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION ?