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human Connexin 26 at 55mmHg PCO2, pH7.4: two masked subunits, class B
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 2ZW3
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 8.5191 f_angle_d 0.6105 f_chiral_restr 0.0426 f_bond_d 0.0068 f_plane_restr 0.0028
Sample two subunits masked from dodecameric assembly of human connexin 26: class B
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 6 seconds, in 10% CO2/90%N2 atmosphere
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 36250 Reported Resolution (Å) 2.7 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT
Map-Model Fitting and Refinement Id 1 (2ZW3) 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) 45
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 1000 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 81000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION RELION 3.1 IMAGE ACQUISITION EPU 2.X CTF CORRECTION Gctf MODEL FITTING Coot 0.8.9.2 EL MODEL REFINEMENT PHENIX 1.18.2-3874
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION 1679668 LoG picker implemented in Relion3.1-beta