ELECTRON MICROSCOPY

Sample

gp6(12) gp15(12) gp16(6) portal complex (connector) of SPP1 bacteriophage

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument FEI VITROBOT MARK IV
Cryogen Name ETHANE
Sample Vitrification Details ?
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 401807
Reported Resolution (Å) 2.7
Resolution Method FSC 0.5 CUT-OFF
Other Details Local resolution variations in the reconstruction was estimated using ResMap
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
Refinement Space REAL
Refinement Protocol FLEXIBLE FIT
Refinement Target ?
Overall B Value 90
Fitting Procedure ?
Details Manual inspection of the residues in the complete gp6, gp15 and gp16 polypeptide chains tracing was done using COOT and refined in Phenix
Data Acquisition
Detector Type FEI FALCON III (4k x 4k)
Electron Dose (electrons/Å2) 40
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model FEI TITAN KRIOS
Minimum Defocus (nm) 1200
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 120000
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details ?
Imaging Experiment
Task Software Package Version
PARTICLE SELECTION RELION 2.0
IMAGE ACQUISITION EPU ?
CTF CORRECTION CTFFIND 4
MODEL FITTING Coot 9
INITIAL EULER ASSIGNMENT cryoSPARC 2.0
FINAL EULER ASSIGNMENT cryoSPARC 2.0
CLASSIFICATION cryoSPARC 2
RECONSTRUCTION cryoSPARC 2
MODEL REFINEMENT PHENIX ?
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING ONLY ?