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Cryo-EM structure of Cx26 from Gallus Gallus in bicarbonate buffer
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 7QEQ
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 7.716 f_angle_d 0.482 f_chiral_restr 0.0384 f_bond_d 0.0026 f_plane_restr 0.0024
Sample Connexin 26 (Gallus Gallus) in 90mmHg PCO2, pH7.4
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument LEICA EM GP Cryogen Name ETHANE-PROPANE Sample Vitrification Details 3 microlitres protein applied to grid, blot time 7 seconds, in 15% CO2/85%N2 atmosphere
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 161947 Reported Resolution (Å) 2.07 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry D6
Map-Model Fitting and Refinement Id 1 (7QEQ) 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/Å**2) 41
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 800 Maximum Defocus (nm) 2000 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
EM Software Task Software Package Version PARTICLE SELECTION RELION 3.1 CTF CORRECTION CTFFIND 4 MODEL FITTING Coot 0.9.8.4 MODEL REFINEMENT PHENIX 1.20.1 RECONSTRUCTION RELION 3.1
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION 2041681