ELECTRON MICROSCOPY

Sample

human Nuclear Exosome Targeting (NEXT)-RNA substrate 1 complex

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument FEI VITROBOT MARK IV
Cryogen Name ETHANE
Sample Vitrification Details 30 s wait time, blot for 2.5 s before plunging
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 618412
Reported Resolution (Å) 4.06
Resolution Method FSC 0.143 CUT-OFF
Other Details A total of 618,412 particles were used for the consensus reconstruction with an overall resolution of 4.06 Angstrom (FSC 0.143 cut off). Focused 3D classification and local refinement were performed in several regions of the complex. A composite map was generated using focused reconstructions of ZCCHC8 HD/KID-MTR4 KOW (3.26 Angstrom, FSC = 0.143; 117,561 particles), protomer A MTR4 (3.42 Angstrom, FSC = 0.143; 225,213 particles), protomer B MTR4 (3.54 Angstrom, FSC = 0.143; 236,602 particles), protomer A MTR4 core-ZCCHC8 PSP-RBM7 RRM (4.06 Angstrom, FSC = 0.143; 44,800 particles), and protomer B MTR4 core-ZCCHC8 PSP-RBM7 RRM (4.4 Angstrom, FSC = 0.143 37,088 particles).
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
Refinement Space ?
Refinement Protocol ?
Refinement Target ?
Overall B Value ?
Fitting Procedure ?
Details ?
Data Acquisition
Detector Type GATAN K2 SUMMIT (4k x 4k)
Electron Dose (electrons/Å2) 67.6
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model FEI TITAN KRIOS
Minimum Defocus (nm) ?
Maximum Defocus (nm) ?
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
RECONSTRUCTION RELION ?
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION ?