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Cryo-EM structure of the zebrafish TRPM2 channel in the presence of ADPR and Ca2+
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 6D73
Sample Transient receptor potential cation channel subfamily M member 2
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument LEICA EM GP Cryogen Name ETHANE Sample Vitrification Details
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 135120 Reported Resolution (Å) 4.2 Resolution Method FSC 0.143 CUT-OFF Other Details No symmetry (C1) was imposed during reconstructions and classifications. C2 symmetry was imposed during the final 3D auto-refinement in RELION. Refinement Type Symmetry Type POINT Point Symmetry C2
Map-Model Fitting and Refinement Id 1 (6D73) Refinement Space REAL Refinement Protocol RIGID BODY FIT Refinement Target Overall B Value 175 Fitting Procedure Details
Data Acquisition Detector Type FEI FALCON III (4k x 4k) Electron Dose (electrons/Å**2) 40
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 500 Maximum Defocus (nm) 2250 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 59000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION RELION 3.0 IMAGE ACQUISITION EPU CTF CORRECTION RELION 3.0 CTF CORRECTION Gctf 1.18 MODEL FITTING Coot 0.8.8 MODEL REFINEMENT PHENIX 1.12-2829 INITIAL EULER ASSIGNMENT RELION 3.0 FINAL EULER ASSIGNMENT RELION 3.0 RECONSTRUCTION RELION 3.0
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION 1949622