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CryoEM structure of the pancreatic ATP-sensitive potassium channel bound to ATP with Kir6.2-CTD in the down conformation
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 6BAA experimental model PDB 6PZ9
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 11.1782 f_angle_d 0.4124 f_chiral_restr 0.0407 f_plane_restr 0.0029 f_bond_d 0.0014
Sample KATP-ATP-CTDdown Sample Components Kir6.2 SUR1
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument Cryogen Name ETHANE Sample Vitrification Details
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 152000 Reported Resolution (Å) 4.52 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT
Map-Model Fitting and Refinement Id 1 (6BAA, 6BAA, 6BAA, 6BAA, 6PZ9) Refinement Space REAL Refinement Protocol RIGID BODY FIT Refinement Target Overall B Value 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) 1000 Maximum Defocus (nm) 2600 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS 2.7 Imaging Mode BRIGHT FIELD Specimen Holder Model Nominal Magnification Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION RELION CTF CORRECTION RELION MODEL FITTING Coot CLASSIFICATION RELION RECONSTRUCTION RELION RECONSTRUCTION PHENIX MODEL REFINEMENT PHENIX
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details NONE