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The voltage-activated Kv1.2-2.1 paddle chimera channel in lipid nanodiscs, cytosolic domain
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 2R9R
Sample Cytosolic domain of voltage-activated potassium channel Kv1.2-2.1 paddle chimera in lipid nanodiscs
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument LEICA EM GP Cryogen Name ETHANE Sample Vitrification Details A 3 microliter sample was applied to a plasma-cleaned grid and blotted for 10 seconds.
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 57384 Reported Resolution (Å) 3 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C4
Map-Model Fitting and Refinement Id 1 (2R9R) Refinement Space REAL Refinement Protocol FLEXIBLE FIT Refinement Target Overall B Value 84 Fitting Procedure Details
Data Acquisition Detector Type GATAN K2 SUMMIT (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) 2500 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 29000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version IMAGE ACQUISITION Latitude 3.21.1253 MODEL FITTING UCSF Chimera MODEL FITTING Coot INITIAL EULER ASSIGNMENT RELION 2.1 FINAL EULER ASSIGNMENT RELION 2.1 CLASSIFICATION RELION 2.1 RECONSTRUCTION RELION 2.1 MODEL REFINEMENT Coot MODEL REFINEMENT PHENIX
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING ONLY 281021