3PMX

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	46.44

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 64.24	α = 90
b = 88.17	β = 90
c = 47.345	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	2008-09-30	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 Sym 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	1.87	26.73	92.9	0.051	17.3	4.4	21208	21208		2	31.2

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)
	1.87	1.92	86.5		0.661	1.9	4	1442

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	1.87	26.73	20080	20080	1089	100	0.22086	0.22086	0.21754	0.28142	RANDOM	21.358

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]
-2.95			3.07		-0.12

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	30.736
r_dihedral_angle_4_deg	21.885
r_dihedral_angle_3_deg	15.804
r_dihedral_angle_1_deg	5.999
r_scangle_it	3.277
r_scbond_it	2.545
r_mcangle_it	1.599
r_mcbond_it	1.492
r_angle_refined_deg	1.442
r_angle_other_deg	0.976
r_symmetry_vdw_other	0.28
r_mcbond_other	0.258
r_symmetry_hbond_refined	0.247
r_nbd_other	0.207
r_nbd_refined	0.199
r_xyhbond_nbd_refined	0.172
r_nbtor_refined	0.17
r_symmetry_vdw_refined	0.159
r_nbtor_other	0.087
r_chiral_restr	0.078
r_bond_refined_d	0.014
r_bond_other_d	0.006
r_gen_planes_refined	0.005
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2043
Nucleic Acid Atoms
Solvent Atoms	311
Heterogen Atoms	92

Software

Software
Software Name	Purpose
CrystalClear	data collection
AMoRE	phasing
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling