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MloK1 potassium channel in lipidic bilayer of 2D crystals
Specimen Preparation
Sample Aggregation State
2D ARRAY
Vitrification Instrument
Cryogen Name
ETHANE
Sample Vitrification Details
3D Reconstruction
Reconstruction Method
SINGLE PARTICLE
Number of Particles
31649
Reported Resolution (Å)
4.5
Resolution Method
FSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry Type
POINT
Point Symmetry
C4
Map-Model Fitting and Refinement
Id
1 (6I9D)
Refinement Space
Refinement Protocol
FLEXIBLE FIT
Refinement Target
Overall B Value
Fitting Procedure
Details
The consensus model was flexibily fit in to the EM map of this class using Normal Mode Analysis with iMODFIT, and then real-space refined using PHENIX ...
The consensus model was flexibily fit in to the EM map of this class using Normal Mode Analysis with iMODFIT, and then real-space refined using PHENIX.
Data Acquisition
Detector Type
GATAN K2 SUMMIT (4k x 4k)
Electron Dose (electrons/Å**2)
45
Imaging Experiment
1
Date of Experiment
Temperature (Kelvin)
Microscope Model
FEI TITAN KRIOS
Minimum Defocus (nm)
750
Maximum Defocus (nm)
4300
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
50000
Calibrated Magnification
Source
FIELD EMISSION GUN
Acceleration Voltage (kV)
300
Imaging Details
EM Software
Task
Software Package
Version
CTF CORRECTION
CTFFIND
CTF CORRECTION
CTFTILT
MODEL FITTING
iMODFIT
1.44
MODEL REFINEMENT
PHENIX
1.13
INITIAL EULER ASSIGNMENT
FOCUS
FINAL EULER ASSIGNMENT
FREALIGN
9.11
CLASSIFICATION
FREALIGN
9.11
RECONSTRUCTION
FREALIGN
9.11
Image Processing
CTF Correction Type
CTF Correction Details
Number of Particles Selected
Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION
The defocus at the center of each particle box was estimated based on the tilt geometry.
231688
The particle positions were given by the cross-correlation profile generated by the classical unbending algorithm.