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Potassium transporter KtrAB from Bacillus subtilis in ATP-bound state with addition of EDTA and EGTA, C1 symmetry
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 4J7C
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 10.563 f_angle_d 0.531 f_chiral_restr 0.043 f_bond_d 0.004 f_plane_restr 0.004
Sample Bacillus subtilis KtrAB potassium transporter KtrAB Sample Components KtrA octamer KtrB dimer
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 527427 Reported Resolution (Å) 3 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C1
Map-Model Fitting and Refinement Id 1 (4J7C) Refinement Space Refinement Protocol Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type GATAN K3 BIOQUANTUM (6k x 4k) Electron Dose (electrons/Å**2) 54
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 1400 Maximum Defocus (nm) 2200 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS Imaging Mode BRIGHT FIELD Specimen Holder Model Nominal Magnification 105000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version MODEL FITTING UCSF Chimera 1.14 RECONSTRUCTION cryoSPARC 3.2 MODEL REFINEMENT PHENIX 1.19.2
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION