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Structure of the human chimera HCN112 hyperpolarization-activated cyclic nucleotide-gated ion channel.
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 5U6O
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 4.851 f_angle_d 0.616 f_chiral_restr 0.041 f_plane_restr 0.004 f_bond_d 0.003
Sample Potassium/sodium hyperpolarization-activated cyclic nucleotide-gated channel 1
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 92412 Reported Resolution (Å) 3.53 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C4
Map-Model Fitting and Refinement Id 1 (5U6O) Refinement Space REAL Refinement Protocol Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type FEI FALCON IV (4k x 4k) Electron Dose (electrons/Å**2) 41.42
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 1600 Maximum Defocus (nm) 3200 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) 300 Imaging Details
EM Software Task Software Package Version IMAGE ACQUISITION EPU CTF CORRECTION RELION 3.1.2 MODEL FITTING UCSF Chimera 1.15 MODEL REFINEMENT Coot 0.8.9.2 CLASSIFICATION cryoSPARC 3.2 RECONSTRUCTION cryoSPARC 3.2 MODEL REFINEMENT PHENIX
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION 370859