3B6Q

Crystal Structure of the GLUR2 Ligand Binding Core (S1S2J) Mutant T686A in Complex with Glutamate at 2.0 Resolution

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	8.5	293	0.1 M Tris-HCl, 0.15-0.2 M lithium sulfate, 18-21% PEG4000, pH 8.5, VAPOR DIFFUSION, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.32	46.98

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 123.192	α = 90
b = 47.257	β = 110.62
c = 49.718	γ = 90

Symmetry
Space Group	C 1 2 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	IMAGE PLATE	RIGAKU RAXIS IV		2005-05-19	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU	1.5418

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	2	57.64		0.08		3.5		17813

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	2				0.295		3.5

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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	2	57.64	17201	954	99.27	0.18485	0.18264	0.22211	RANDOM	16.711

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]
-0.91		-1.01	-0.69		0.89

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	31.208
r_dihedral_angle_4_deg	15.588
r_dihedral_angle_3_deg	13.855
r_dihedral_angle_1_deg	6.303
r_scangle_it	3.582
r_scbond_it	2.436
r_angle_refined_deg	1.552
r_mcangle_it	1.427
r_mcbond_it	0.966
r_nbtor_refined	0.298
r_nbd_refined	0.207
r_symmetry_vdw_refined	0.207
r_symmetry_hbond_refined	0.168
r_xyhbond_nbd_refined	0.126
r_chiral_restr	0.111
r_bond_refined_d	0.017
r_gen_planes_refined	0.006
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1963
Nucleic Acid Atoms
Solvent Atoms	151
Heterogen Atoms	15

Software

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