9B36 | pdb_00009b36

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

ELECTRON MICROSCOPY

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Refinement

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	12.141
f_angle_d	1.246
f_chiral_restr	0.069
f_plane_restr	0.008
f_bond_d	0.007

Sample
full-length rat GluK2 tetramer in complex with two concanavalin A dimers

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

3D Reconstruction
Reconstruction Method	SINGLE PARTICLE
Number of Particles	109827
Reported Resolution (Å)	4.29
Resolution Method	FSC 0.143 CUT-OFF
Other Details	This is composite map. Reference map: 4.29 A ATD: 3.5 A LBD-TMD: 3.4 A ConA: 3.58 A
Refinement Type
Symmetry Type	POINT
Point Symmetry	C2

Map-Model Fitting and Refinement
Id	1
Refinement Space	REAL
Refinement Protocol
Refinement Target
Overall B Value
Fitting Procedure
Details

Data Acquisition
Detector Type	GATAN K3 (6k x 4k)
Electron Dose (electrons/Å**2)	58

Imaging Experiment	1
Date of Experiment
Temperature (Kelvin)
Microscope Model	TFS KRIOS
Minimum Defocus (nm)	1000
Maximum Defocus (nm)	2000
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS	2.7
Imaging Mode	BRIGHT FIELD
Specimen Holder Model
Nominal Magnification
Calibrated Magnification
Source	FIELD EMISSION GUN
Acceleration Voltage (kV)	300
Imaging Details

EM Software
Task	Software Package	Version
PARTICLE SELECTION	cryoSPARC	4.4.1
CTF CORRECTION	cryoSPARC	4.4.1
MODEL REFINEMENT	PHENIX	1.18
INITIAL EULER ASSIGNMENT	cryoSPARC	4.4.1
FINAL EULER ASSIGNMENT	cryoSPARC	4.4.1
RECONSTRUCTION	cryoSPARC	4.4.1

Image Processing
CTF Correction Type	CTF Correction Details	Number of Particles Selected	Particle Selection Details
NONE		8660229