6H3C

Cryo-EM structure of the BRISC complex bound to SHMT2

ELECTRON MICROSCOPY

Sample
BRISC complex bound to SHMT2 alpha
Sample Components
BRISC complex
SHMT2 alpha

Specimen Preparation
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 ...	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
Point Symmetry	C2

Map-Model Fitting and Refinement
Id	1 (6GVW, 5V7I)
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 reb ...	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/Å**2)	45

Imaging Experiment	1
Date of Experiment
Temperature (Kelvin)
Microscope Model	FEI TITAN KRIOS
Minimum Defocus (nm)
Maximum Defocus (nm)
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS
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

EM Software
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.	332598	Particles were auto-picked.

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.