6S3Q

Structure of human excitatory amino acid transporter 3 (EAAT3) in complex with TFB-TBOA

ELECTRON MICROSCOPY

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	6GCT

Refinement

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	6.858
f_angle_d	0.957
f_chiral_restr	0.06
f_bond_d	0.011
f_plane_restr	0.007

Sample
EXCITATORY AMINO ACID TRANSPORTER 3 TRIMER

Specimen Preparation
Sample Aggregation State	PARTICLE
Vitrification Instrument	FEI VITROBOT MARK IV
Cryogen Name	ETHANE
Sample Vitrification Details	blot for 4.5s

3D Reconstruction
Reconstruction Method	SINGLE PARTICLE
Number of Particles	113258
Reported Resolution (Å)	3.34
Resolution Method	FSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry Type	POINT
Point Symmetry	C3

Map-Model Fitting and Refinement
Id	1 (6GCT)
Refinement Space	REAL
Refinement Protocol	AB INITIO MODEL
Refinement Target	Cross-correlation coefficient
Overall B Value	111
Fitting Procedure
Details	Model refined using NCS constraints and rotamer, cbeta restraints only against RELION post-processed b-factor sharpened (-111A**2), 3.34A filtered map ...	Model refined using NCS constraints and rotamer, cbeta restraints only against RELION post-processed b-factor sharpened (-111A**2), 3.34A filtered map

Data Acquisition
Detector Type	GATAN K2 SUMMIT (4k x 4k)
Electron Dose (electrons/Å**2)	40.7

Imaging Experiment	1
Date of Experiment
Temperature (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
Calibrated Magnification
Source	FIELD EMISSION GUN
Acceleration Voltage (kV)	300
Imaging Details

EM Software
Task	Software Package	Version
IMAGE ACQUISITION	SerialEM
CTF CORRECTION	CTFFIND	4.1.10
MODEL FITTING	UCSF Chimera	1.11
MODEL FITTING	Coot	0.8.9.1
INITIAL EULER ASSIGNMENT	RELION	3.0
FINAL EULER ASSIGNMENT	RELION	3.0
CLASSIFICATION	RELION	3.0
RECONSTRUCTION	RELION	3.0
MODEL REFINEMENT	PHENIX	1.14

Image Processing
CTF Correction Type	CTF Correction Details	Number of Particles Selected	Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION		281809	Particles were picked based on 2D templates arising from classification of particles picked from a subset of images using gautomatch in non-template mode.

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 R01GM157729.