ELECTRON MICROSCOPY

Sample

BRISC complex bound to SHMT2 alpha

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument LEICA EM GP
Cryogen Name ETHANE
Sample Vitrification Details A 4 ul sample was applied to the grid and a protocol consisting of 30 s pre-blot incubation, 2 s blotting and no post-blot incubation was utilized for vitrification.
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 35595
Reported Resolution (Å) 3.9
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 FLEXIBLE FIT
Refinement Target Correlation coefficient and
Overall B Value 117
Fitting Procedure ?
Details Initial fitting with done using COOT, Rosetta was used for amino acid sequence threading and flexible fitting. COOT and ISOLDE were used for local rebuilding. Phenix was used for atom displacement parameter (ADP / B-factor) refinement.
Data Acquisition
Detector Type GATAN K2 SUMMIT (4k x 4k)
Electron Dose (electrons/Å2) 45
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 0
Imaging Mode BRIGHT FIELD
Specimen Holder Model FEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification 130000
Calibrated Magnification 58140
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details ?
Imaging Experiment
Task Software Package Version
PARTICLE SELECTION Gautomatch 0.53
IMAGE ACQUISITION EPU 1.1.0.30
CTF CORRECTION RELION 2.1
MODEL FITTING Coot 0.8.9
MODEL FITTING Rosetta 2018.09.60072
INITIAL EULER ASSIGNMENT RELION 2.1
FINAL EULER ASSIGNMENT RELION 2.1
CLASSIFICATION RELION 2.1
RECONSTRUCTION RELION 2.1
MODEL REFINEMENT Rosetta 2018.09.60072
MODEL REFINEMENT PHENIX 1.15-3459
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION CTF was determined using GCTF. CTF was corrected within RELION.