ELECTRON MICROSCOPY

Sample

The 21bin20S complex of NSF, alphaSNAP, and the soluble 2:1 binary SNARE complex of syntaxin-1a and SNAP-25

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument FEI VITROBOT MARK IV
Cryogen Name ETHANE
Sample Vitrification Details ?
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 965222
Reported Resolution (Å) 3.74
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 ?
Overall B Value ?
Fitting Procedure ?
Details ?
Data Acquisition
Detector Type GATAN K3 (6k x 4k)
Electron Dose (electrons/Å2) 31.560
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model TFS KRIOS
Minimum Defocus (nm) 1000
Maximum Defocus (nm) 3000
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 22500
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details ?
Imaging Experiment
Task Software Package Version
PARTICLE SELECTION RELION 3.1.4
IMAGE ACQUISITION SerialEM ?
CTF CORRECTION CTFFIND 4
CTF CORRECTION RELION 3.1.4
MODEL FITTING Coot 0.9
MODEL FITTING UCSF ChimeraX ?
MODEL REFINEMENT PHENIX 1.21
INITIAL EULER ASSIGNMENT RELION 3.1.4
FINAL EULER ASSIGNMENT cryoSPARC 3.2.0
CLASSIFICATION RELION 3.1.4
RECONSTRUCTION cryoSPARC 3.2.0
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION ?