ELECTRON MICROSCOPY

Sample

Chikungunya NsP1 capping pore complex

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument LEICA EM CPC
Cryogen Name ETHANE-PROPANE
Sample Vitrification Details 3ul of sample was spotted onto the grid and hand blotted prior to plunge freezing.
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 94018
Reported Resolution (Å) 2.6
Resolution Method FSC 0.143 CUT-OFF
Other Details ?
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
Refinement Space REAL
Refinement Protocol AB INITIO MODEL
Refinement Target CC
Overall B Value ?
Fitting Procedure ?
Details ?
Data Acquisition
Detector Type GATAN K2 SUMMIT (4k x 4k)
Electron Dose (electrons/Å2) 38.5
Imaging Experiment
Date of Experiment ?
Temprature (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 165000
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details ?
Imaging Experiment
Task Software Package Version
IMAGE ACQUISITION EPU 1.5.0.32
CTF CORRECTION CTFFIND 4.1
MODEL FITTING Coot 0.8.9.2
MODEL REFINEMENT PHENIX 1.17.1
INITIAL EULER ASSIGNMENT RELION 3.0.8
FINAL EULER ASSIGNMENT RELION 3.0.8
CLASSIFICATION RELION 3.0.8
RECONSTRUCTION RELION 3.0.8
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION CTF was estimated from movie frames aligned without dose-weighting. Per particle CTF correction was also performed with polished particles.