4X48

Crystal structure of GluR2 ligand-binding core

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	4LZ5

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP		277	The protein solution contained 7 mg/ml GluR2-S1S2J, 10mM (S)-Glu, 10mM HEPES (pH 7.5), 20mM NaCl and 1mM EDTA. Compound was added to a final concentration of 150micromolar from a 30mM DMSO stock. To this solution, an equal amount of reservoir solution containing 10% PEG 8000, 0.1 M ZnAc and 0.1M NaAc, pH 5.5 was added, and 2microlitre drops of this mixture were allowed to equilibrate by vapor diffusion over a 1mL reservoir. Crystals appeared in the drops in 3-5 days.

Crystal Properties
Matthews coefficient	Solvent content
2.46	50.05

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 114.759	α = 90
b = 164.965	β = 90
c = 47.363	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	CCD	ADSC QUANTUM 315		2009-09-18	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X29A	1.075	NSLS	X29A

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Sym I (Observed)	Rrim I (All)	Rpim I (All)	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	1.886	164.965	94.8	0.074	0.088	0.035	13.7	5.4	69522	69522			31.53

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Rpim I (All)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.89	1.99	71.9		0.392	0.392	0.293	1.8	2.2	7487

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	4LZ5	1.89	27.67	69180	3546	94.8	0.1747	0.1734	0.1972	RANDOM	37.53

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]
-4.5672			-2.7214		7.2885

RMS Deviations
Key	Refinement Restraint Deviation
t_other_torsion	15.64
t_omega_torsion	3.22
t_angle_deg	1.03
t_bond_d	0.01
t_dihedral_angle_d
t_trig_c_planes
t_gen_planes
t_it
t_nbd
t_improper_torsion
t_pseud_angle
t_chiral_improper_torsion
t_sum_occupancies
t_utility_distance
t_utility_angle
t_utility_torsion
t_ideal_dist_contact

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6035
Nucleic Acid Atoms
Solvent Atoms	702
Heterogen Atoms	113

Software

Software
Software Name	Purpose
SCALA	data scaling
BUSTER-TNT	refinement
PDB_EXTRACT	data extraction
BUSTER-TNT	phasing