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Structure of human HCN4 hyperpolarization-activated cyclic nucleotide-gated ion channel
Sample Potassium/Sodium hyperpolarization-activated cyclic nucleotide-gated ion channel 4
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument FEI VITROBOT MARK IV Cryogen Name ETHANE Sample Vitrification Details blotted for 5.5s before plunge
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 25764 Reported Resolution (Å) 3.4 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C4
Map-Model Fitting and Refinement Id 1 Refinement Space REAL Refinement Protocol AB INITIO MODEL Refinement Target Overall B Value Fitting Procedure Details Model refined against the cryosparc b-factor sharpened map using default restraints
Data Acquisition Detector Type GATAN K2 SUMMIT (4k x 4k) Electron Dose (electrons/Å**2) 48.7
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 1300 Maximum Defocus (nm) 2500 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS Imaging Mode BRIGHT FIELD Specimen Holder Model FEI TITAN KRIOS AUTOGRID HOLDER Nominal Magnification 37313 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details EBIC TITAN KRIOS M02
EM Software Task Software Package Version PARTICLE SELECTION Gautomatch 0.53 IMAGE ACQUISITION EPU CTF CORRECTION CTFFIND 4.1.5 MODEL FITTING Coot 0.8.9.1 MODEL REFINEMENT PHENIX 1.13 INITIAL EULER ASSIGNMENT RELION 2.1-beta-0 FINAL EULER ASSIGNMENT RELION 2.1-beta-0 CLASSIFICATION RELION 2.1-beta-0 RECONSTRUCTION cryoSPARC 0.6.5
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION 157681 Picking with templates derived from manually picked particles