ELECTRON MICROSCOPY

Sample

Leukocyte cell-derived chemotaxin-2 protein

Specimen Preperation
Sample Aggregation State FILAMENT
Vitrification Instrument ?
Cryogen Name ETHANE
Sample Vitrification Details ?
3D Reconstruction
Reconstruction Method HELICAL
Number of Particles 36221
Reported Resolution (Å) 2.4
Resolution Method FSC 0.143 CUT-OFF
Other Details ?
Refinement Type
Symmetry Type HELICAL
Map-Model Fitting and Refinement
ID 1
Refinement Space REAL
Refinement Protocol OTHER
Refinement Target ?
Overall B Value 45
Fitting Procedure ?
Details We used ModelAngelo to obtain the initial fibril model of a single chain.
Data Acquisition
Detector Type FEI FALCON IV (4k x 4k)
Electron Dose (electrons/Å2) 40
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model TFS KRIOS
Minimum Defocus (nm) 800
Maximum Defocus (nm) 2600
Minimum Tilt Angle (degrees) ?
Maximum Tilt Angle (degrees) ?
Nominal CS ?
Imaging Mode BRIGHT FIELD
Specimen Holder Model ?
Nominal Magnification ?
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details ?
Imaging Experiment
Task Software Package Version
PARTICLE SELECTION RELION 4.0
IMAGE ACQUISITION EPU 3.5
CTF CORRECTION CTFFIND 4.1
MODEL FITTING Coot 0.9.8.1
INITIAL EULER ASSIGNMENT RELION 4.0
FINAL EULER ASSIGNMENT RELION 4.0
CLASSIFICATION RELION 4.0
RECONSTRUCTION RELION 4.0
MODEL REFINEMENT PHENIX 1.20.1_4487
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
NONE ?
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