8P2Z

ELECTRON MICROSCOPY

Sample

SIT1:ACE2 complex

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument FEI VITROBOT MARK IV
Cryogen Name ETHANE
Sample Vitrification Details grid blotted for 4sec after a 20sec wait time
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 344606
Reported Resolution (Å) 3.5
Resolution Method FSC 0.143 CUT-OFF
Other Details cryoSPARC masked local refinement focussed on SIT1 with symmetry expanded particles after 3D classification in RELION
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
Refinement Space REAL
Refinement Protocol OTHER
Refinement Target ?
Overall B Value 112
Fitting Procedure ?
Details Initial model fitting was peformed in Chimera and model building in COOT
Data Acquisition
Detector Type GATAN K3 BIOQUANTUM (6k x 4k)
Electron Dose (electrons/Å2) 50.0
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model FEI TITAN KRIOS
Minimum Defocus (nm) 1200
Maximum Defocus (nm) 2400
Minimum Tilt Angle (degrees) ?
Maximum Tilt Angle (degrees) ?
Nominal CS 2.7
Imaging Mode BRIGHT FIELD
Specimen Holder Model FEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification 105000
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details ?
Imaging Experiment
Task Software Package Version
PARTICLE SELECTION cryoSPARC 3.3.1
IMAGE ACQUISITION EPU ?
CTF CORRECTION cryoSPARC 3.3.1
MODEL FITTING Coot 0.9.6
INITIAL EULER ASSIGNMENT cryoSPARC 3.3.1
FINAL EULER ASSIGNMENT cryoSPARC 3.3.1
CLASSIFICATION RELION 3.1.3
RECONSTRUCTION cryoSPARC 3.3.1
MODEL REFINEMENT PHENIX 1.20_4459
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION ?