3PMW

Ligand-binding domain of GluA2 (flip) ionotropic glutamate receptor in complex with an allosteric modulator

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4	277	18% PEG 4000, 50mM Lithium Sulphate, 2.5% Glycerol, 100mM Sodium Cacodylate pH 4.0, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.3	46.61

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 64.787	α = 90
b = 87.328	β = 90
c = 47.549	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	2007-09-03	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU MICROMAX-007	1.54178

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	2.2	64.79	88.3	0.08	9.6	4.6	12628	12628		2	36.7

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	2.2	2.28	87.8		0.41	2.8	4.63	1223

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	2.2	64.79	11988	11988	628	88.4	0.22893	0.22893	0.22481	0.31297	RANDOM	28.052

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]
-0.31			2.14		-1.83

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.3
r_dihedral_angle_4_deg	20.357
r_dihedral_angle_3_deg	16.782
r_dihedral_angle_1_deg	6.429
r_scangle_it	3.723
r_scbond_it	2.716
r_mcangle_it	1.755
r_angle_refined_deg	1.617
r_mcbond_it	1.472
r_angle_other_deg	0.978
r_symmetry_hbond_refined	0.274
r_mcbond_other	0.246
r_symmetry_vdw_other	0.24
r_symmetry_vdw_refined	0.204
r_nbd_refined	0.2
r_xyhbond_nbd_refined	0.199
r_nbd_other	0.194
r_nbtor_refined	0.179
r_nbtor_other	0.087
r_chiral_restr	0.086
r_bond_refined_d	0.016
r_gen_planes_refined	0.005
r_bond_other_d	0.002
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2030
Nucleic Acid Atoms
Solvent Atoms	148
Heterogen Atoms	89

Software

Software
Software Name	Purpose
CrystalClear	data collection
AMoRE	phasing
REFMAC	refinement
d*TREK	data reduction
d*TREK	data scaling