ELECTRON MICROSCOPY

Sample

Tetrameric channel

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument GATAN CRYOPLUNGE 3
Cryogen Name ETHANE
Sample Vitrification Details 2.5 sec blot, -1 offset, whatman #1 filter paper on front side, plastic on back side
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 175314
Reported Resolution (Å) 3.55
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 AB INITIO MODEL
Refinement Target ?
Overall B Value 125.7
Fitting Procedure ?
Details ?
Data Acquisition
Detector Type GATAN K2 SUMMIT (4k x 4k)
Electron Dose (electrons/Å2) 54
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model FEI POLARA 300
Minimum Defocus (nm) -1500
Maximum Defocus (nm) -3000
Minimum Tilt Angle (degrees) ?
Maximum Tilt Angle (degrees) ?
Nominal CS 2.1
Imaging Mode BRIGHT FIELD
Specimen Holder Model GATAN HCHST 3008 SINGLE TILT HIGH RESOLUTION HELIUM COOLING HOLDER
Nominal Magnification 31000
Calibrated Magnification 41132
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details ?
Imaging Experiment
Task Software Package Version
PARTICLE SELECTION RELION 1.4
IMAGE ACQUISITION SerialEM 3.4
CTF CORRECTION Gctf 1.06
MODEL FITTING Coot 0.8.7
INITIAL EULER ASSIGNMENT RELION 1.4
FINAL EULER ASSIGNMENT RELION 1.4
CLASSIFICATION RELION 1.4
RECONSTRUCTION RELION 1.4
MODEL REFINEMENT PHENIX dev-2608
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
NONE ?