6HUJ

CryoEM structure of human full-length heteromeric alpha1beta3gamma2L GABA(A)R in complex with picrotoxin, GABA and megabody Mb38.


ELECTRON MICROSCOPY
Sample
Human full-length heteromeric alpha1beta3gamma2L GABA(A)R in complex with picrotoxin, GABA and megabody Mb38.
Sample Components
Gamma-aminobutyric acid receptor subunit beta-3, Gamma-aminobutyric acid receptor subunit gamma-2
megabody Mb38
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification InstrumentFEI VITROBOT MARK IV
Cryogen NameETHANE
Sample Vitrification Details
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles67604
Reported Resolution (Å)3.04
Resolution MethodFSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry TypePOINT
Point SymmetryC1
Map-Model Fitting and Refinement
Id1
Refinement Space
Refinement ProtocolFLEXIBLE FIT
Refinement Target
Overall B Value
Fitting Procedure
Details
Data Acquisition
Detector TypeFEI FALCON III (4k x 4k)
Electron Dose (electrons/Å**2)30
Imaging Experiment1
Date of Experiment
Temperature (Kelvin)
Microscope ModelFEI TITAN KRIOS
Minimum Defocus (nm)500
Maximum Defocus (nm)700
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS2.7
Imaging ModeBRIGHT FIELD
Specimen Holder ModelFEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification75000
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)300
Imaging Details
EM Software
TaskSoftware PackageVersion
PARTICLE SELECTIONRELION3.0
IMAGE ACQUISITIONEPU
CTF CORRECTIONGctf1.08
MODEL FITTINGUCSF Chimera
MODEL REFINEMENTPHENIX
INITIAL EULER ASSIGNMENTRELION3.0
FINAL EULER ASSIGNMENTRELION3.0
CLASSIFICATIONRELION3.0
RECONSTRUCTIONRELION3.0
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION292669