9FAW | pdb_00009faw

CryoEM structure of human full-length beta3gamma2 GABA(A) receptor in complex with GARLH4, the TMD of Neuroligin2, HEPES and Megabody25, in a desensitised state

ELECTRON MICROSCOPY

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	7QNB

Refinement

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	8.776
f_angle_d	0.679
f_chiral_restr	0.044
f_bond_d	0.004
f_plane_restr	0.004

Sample
CryoEM structure of human full-length beta3gamma2 GABA(A) receptor in complex with GARLH4, the TMD of Neuroligin2, HEPES and Megabody25, in a desensitised state

Specimen Preparation
Sample Aggregation State	PARTICLE
Vitrification Instrument	LEICA EM GP
Cryogen Name	ETHANE
Sample Vitrification Details

3D Reconstruction
Reconstruction Method	SINGLE PARTICLE
Number of Particles	30273
Reported Resolution (Å)	2.9
Resolution Method	FSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry Type	POINT
Point Symmetry	C1

Map-Model Fitting and Refinement
Id	1 (7QNB)
Refinement Space	REAL
Refinement Protocol	OTHER
Refinement Target	FSC at 0.5
Overall B Value	20
Fitting Procedure
Details

Data Acquisition
Detector Type	TFS FALCON 4i (4k x 4k)
Electron Dose (electrons/Å**2)	45.28

Imaging Experiment	1
Date of Experiment
Temperature (Kelvin)
Microscope Model	TFS KRIOS
Minimum Defocus (nm)	800
Maximum Defocus (nm)	2000
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	165000
Source	FIELD EMISSION GUN
Acceleration Voltage (kV)	300
Imaging Details

EM Software
Task	Software Package	Version
PARTICLE SELECTION	Warp	1.0.9
IMAGE ACQUISITION	EPU
CTF CORRECTION	CTFFIND	4.1
MODEL FITTING	PHENIX	19.2
INITIAL EULER ASSIGNMENT	cryoSPARC	4.40
FINAL EULER ASSIGNMENT	cryoSPARC	4.40
CLASSIFICATION	cryoSPARC	4.4
RECONSTRUCTION	cryoSPARC	4.40
MODEL REFINEMENT	PHENIX	19.2

Image Processing
CTF Correction Type	CTF Correction Details	Number of Particles Selected	Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION		2569820