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Cryo-EM structure of the folate-specific ECF transporter complex in MSP2N2 lipid nanodiscs
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 7NNT
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 12.389 f_angle_d 0.785 f_chiral_restr 0.054 f_bond_d 0.007 f_plane_restr 0.007
Sample Folate-specific ECF transporter complex
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument FEI VITROBOT MARK IV Cryogen Name ETHANE-PROPANE Sample Vitrification Details 2.9 mM fluorinated Fos-choline 8 was added prior to sample application onto grids. Grids were blotted for 3-4 sec.
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 166524 Reported Resolution (Å) 2.7 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C1
Map-Model Fitting and Refinement Id 1 (7NNT, 7NNT, 7NNT, 7NNT) Refinement Space REAL Refinement Protocol Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type GATAN K2 SUMMIT (4k x 4k) Electron Dose (electrons/Å**2) 51.1
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TALOS ARCTICA Minimum Defocus (nm) Maximum Defocus (nm) 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 165000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 200 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION crYOLO 1.5.0 IMAGE ACQUISITION EPU 2.4 CTF CORRECTION CTFFIND 4.1.13 MODEL FITTING Coot 0.9-pre INITIAL EULER ASSIGNMENT RELION 3.1-beta FINAL EULER ASSIGNMENT RELION 3.1-beta RECONSTRUCTION RELION 3.1-beta MODEL REFINEMENT PHENIX 1.18-3861
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION 1362547