3B7D

Crystal structure of the GLUR2 ligand binding core (HS1S2J) in complex with CNQX at 2.5 A resolution

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		6.5		40 mM Sodium citrate, 10 mM Ammonium sulfate, 1% PEG 400, pH 6.5, VAPOR DIFFUSION, HANGING DROP

Crystal Properties
Matthews coefficient	Solvent content
2.73	54.96

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 66.582	α = 81.85
b = 97.631	β = 89.08
c = 100.97	γ = 77.89

Symmetry
Space Group	P 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	CCD	ADSC QUANTUM 315	KOHZU: DOUBLE CRYSTAL SI(111)	2007-07-08	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 8.3.1		ALS	8.3.1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	Net I Over Average Sigma (I)	Redundancy	Number Reflections (All)	Number Reflections (Observed)	Observed Criterion Sigma (F)	Observed Criterion Sigma (I)	B (Isotropic) From Wilson Plot
1	2.4	39.9	96.8				92349

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.4	2.49			0.426	1.87

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1FTJ	2.5	39.9	82433	4133	96.82	0.25598	0.25455	0.28313	RANDOM	17.383

Temperature Factor Modeling
Anisotropic B[1][1]	Anisotropic B[1][2]	Anisotropic B[1][3]	Anisotropic B[2][2]	Anisotropic B[2][3]	Anisotropic B[3][3]
3.15	-0.15	3.41	-1.93	0.03	-1.27

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.619
r_dihedral_angle_3_deg	13.743
r_dihedral_angle_4_deg	13.129
r_dihedral_angle_1_deg	6.094
r_angle_refined_deg	0.879
r_angle_other_deg	0.773
r_scangle_it	0.672
r_scbond_it	0.396
r_mcangle_it	0.306
r_symmetry_vdw_other	0.283
r_nbd_other	0.182
r_nbd_refined	0.173
r_mcbond_it	0.173
r_nbtor_refined	0.17
r_symmetry_vdw_refined	0.158
r_xyhbond_nbd_refined	0.128
r_symmetry_hbond_refined	0.121
r_nbtor_other	0.081
r_chiral_restr	0.049
r_mcbond_other	0.026
r_bond_refined_d	0.006
r_gen_planes_refined	0.002
r_bond_other_d	0.001
r_gen_planes_other	0.001
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	15989
Nucleic Acid Atoms
Solvent Atoms	567
Heterogen Atoms	136

Software

Software
Software Name	Purpose
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
HKL-2000	data reduction
HKL-2000	data scaling