ELECTRON MICROSCOPY

Sample

HCMV Trimer gHgLgO bound to human receptor PDGFRa and neutralizing fabs 13H11 and MSL-109

Specimen Preperation
Sample Aggregation State 2D ARRAY
Vitrification Instrument FEI VITROBOT MARK IV
Cryogen Name ETHANE
Sample Vitrification Details blot for 2.5 seconds before plunging
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 3560620
Reported Resolution (Å) 2.8
Resolution Method FSC 0.143 CUT-OFF
Other Details Used score threshold of 0.25 for final 3D reconstruction. Map used for model refinements is a composite map after combining 3 focussed maps with PHENIX
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
Refinement Space REAL
Refinement Protocol AB INITIO MODEL
Refinement Target ?
Overall B Value ?
Fitting Procedure ?
Details ?
Data Acquisition
Detector Type GATAN K2 SUMMIT (4k x 4k)
Electron Dose (electrons/Å2) 50
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model FEI TITAN KRIOS
Minimum Defocus (nm) ?
Maximum Defocus (nm) ?
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
PARTICLE SELECTION Gautomatch 0.56
IMAGE ACQUISITION SerialEM 3.7.11
CTF CORRECTION CTFFIND ?
MODEL FITTING UCSF Chimera 1.13.1
MODEL FITTING Coot 0.8.9
MODEL REFINEMENT PHENIX 1.19
MODEL REFINEMENT ISOLDE 1.1.0
INITIAL EULER ASSIGNMENT cisTEM 1.02
FINAL EULER ASSIGNMENT cisTEM 1.02
CLASSIFICATION RELION 3.1
RECONSTRUCTION cisTEM 1.02
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION ?