8QA2

ELECTRON MICROSCOPY

Sample

Connexin 26, 90mmHg PCO2, pH7.4, solubilised in LMNG.

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument FEI VITROBOT MARK I
Cryogen Name ETHANE-PROPANE
Sample Vitrification Details Blot 3 seconds, force 10, 1 blot, skip transfer. 3ul sample, in 15% CO2/85%N2 atmosphere
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 240137
Reported Resolution (Å) 2.3
Resolution Method FSC 0.143 CUT-OFF
Other Details Particles were symmetry expanded before classification
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
Refinement Space REAL
Refinement Protocol ?
Refinement Target ?
Overall B Value ?
Fitting Procedure ?
Details ?
Data Acquisition
Detector Type GATAN K3 (6k x 4k)
Electron Dose (electrons/Å2) 43
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model FEI TITAN KRIOS
Minimum Defocus (nm) 800
Maximum Defocus (nm) 2300
Minimum Tilt Angle (degrees) ?
Maximum Tilt Angle (degrees) ?
Nominal CS ?
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 RELION 4
CTF CORRECTION CTFFIND 4
MODEL FITTING Coot 0.9.8.4
MODEL REFINEMENT PHENIX 1.20.1
CLASSIFICATION RELION 4
RECONSTRUCTION RELION 4
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION ?