9B37

Open state of kainate receptor GluK2 in complex with agonist glutamate and positive allosteric modulator BPAM344 bound to one concanavalin A dimer. Composite map.


ELECTRON MICROSCOPY

Refinement

RMS Deviations
KeyRefinement Restraint Deviation
f_dihedral_angle_d12.848
f_angle_d1.236
f_chiral_restr0.079
f_plane_restr0.008
f_bond_d0.007
Sample
full-length rat GluK2 tetramer in complex with one concanavalin A homodimer
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification Instrument
Cryogen NameETHANE
Sample Vitrification Details
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles77567
Reported Resolution (Å)6.66
Resolution MethodFSC 0.143 CUT-OFF
Other DetailsThis is composite map. Reference map: 6.6 A ATD: 3.5 A LBD-TMD: 3.4 A ConA: 4.07 A
Refinement Type
Symmetry TypePOINT
Map-Model Fitting and Refinement
Id1
Refinement SpaceREAL
Refinement Protocol
Refinement Target
Overall B Value
Fitting Procedure
Details
Data Acquisition
Detector TypeGATAN K3 (6k x 4k)
Electron Dose (electrons/Å**2)58
Imaging Experiment1
Date of Experiment
Temperature (Kelvin)
Microscope ModelTFS KRIOS
Minimum Defocus (nm)1000
Maximum Defocus (nm)2000
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS2.7
Imaging ModeBRIGHT FIELD
Specimen Holder Model
Nominal Magnification
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)300
Imaging Details
EM Software
TaskSoftware PackageVersion
PARTICLE SELECTIONcryoSPARC4.4.1
CTF CORRECTIONcryoSPARC4.4.1
MODEL REFINEMENTPHENIX1.18
INITIAL EULER ASSIGNMENTcryoSPARC4.4.1
FINAL EULER ASSIGNMENTcryoSPARC4.4.1
RECONSTRUCTIONcryoSPARC4.4.1
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
NONE8660229