4LZ7

Crystal structures of GLuR2 ligand-binding-domain in complex with glutamate and positive allosteric modulators

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP		277	1 uL 7 mg/mL protein in 10 mM (S)-Glu, 10 mM HEPES, pH 7.5, 20 mM sodium chloride, 1 mM EDTA, 150 uM ligand (from 30 mM DMSO stock) + 1 uL reservoir (10% PEG8000, 0.1 M zinc acetate, 0.1 M sodium acetate, pH 5.5), crystals appeared in 3-5 days, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.45	49.74

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 114.38	α = 90
b = 164.344	β = 90
c = 47.402	γ = 90

Symmetry
Space Group	P 21 21 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	IMAGE PLATE	RIGAKU RAXIS IV++	mirrors		M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU MICROMAX-007 HF	1.54

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (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	2.1	30	100	0.142	6.3	7.2		53393		-3

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	2.1	2.18	100		0.719		7.1	5281

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 1LBC	2.1	30	53166	2674	99.97	0.1978	0.1955	0.2396	RANDOM	17.1859

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]
0.09			0.02		-0.11

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	31.848
r_dihedral_angle_4_deg	19.424
r_dihedral_angle_3_deg	15.814
r_dihedral_angle_1_deg	6.372
r_scangle_it	3.385
r_scbond_it	2.281
r_angle_refined_deg	1.647
r_mcangle_it	1.387
r_mcbond_it	1.013
r_angle_other_deg	1.004
r_mcbond_other	0.248
r_nbd_refined	0.246
r_symmetry_vdw_refined	0.244
r_symmetry_vdw_other	0.223
r_nbd_other	0.2
r_nbtor_refined	0.18
r_symmetry_hbond_refined	0.147
r_xyhbond_nbd_refined	0.138
r_metal_ion_refined	0.112
r_chiral_restr	0.093
r_nbtor_other	0.09
r_bond_refined_d	0.018
r_gen_planes_refined	0.006
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6035
Nucleic Acid Atoms
Solvent Atoms	251
Heterogen Atoms	79

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
AMoRE	phasing