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Cryo-EM reconstruction of the full-length H209N mutant E. coli transmembrane formate transporter FocA
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 3KCV
Sample C5-symmetric complex of the inner membrane H209N mutant formate transporter FocA
Specimen Preparation 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 348935 Reported Resolution (Å) 2.97 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT
Map-Model Fitting and Refinement Id 1 (3kcv) Refinement Space REAL Refinement Protocol RIGID BODY FIT Refinement Target Overall B Value Fitting Procedure Details The inital model was rigid-fitted using ChimeraX, and refined iteratively using Coot and Phenix
Data Acquisition Detector Type FEI FALCON III (4k x 4k) Electron Dose (electrons/Å**2) 30
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model TFS GLACIOS 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 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 200 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION cryoSPARC 4.4 IMAGE ACQUISITION EPU CTF CORRECTION cryoSPARC 4.4 MODEL FITTING UCSF ChimeraX 1.8 MODEL REFINEMENT Coot 0.9.6 MODEL REFINEMENT PHENIX 1.12rc1 CLASSIFICATION cryoSPARC 4.4 RECONSTRUCTION cryoSPARC 4.4
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details NONE 1150907 Particles were picked using Template Picker with a particle diameter of 140 A