3O2A

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

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.5	277	18% PEG 4000, 100mM Sodium Cacodylate pH 4.5, 50mM Lithium Sulphate, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.36	47.97

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 64.338	α = 90
b = 90.398	β = 90
c = 47.435	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 4		2005-09-28	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-1	0.934	ESRF	ID14-1

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	1.8	25	96.7	0.1	11.7	3.4	25412	25412	2	2	15.5

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)
	1.8	1.86	80.2		0.628	1.5	2.1	2062

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	1.9	25	20776	20776	1129	97.52	0.17127	0.17127	0.16872	0.21714	RANDOM	16.013

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]
-0.37			0.79		-0.42

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	31.889
r_dihedral_angle_4_deg	17.91
r_dihedral_angle_3_deg	16.213
r_dihedral_angle_1_deg	6.033
r_scangle_it	3.264
r_scbond_it	2.153
r_angle_refined_deg	1.675
r_mcangle_it	1.437
r_mcbond_it	0.908
r_nbtor_refined	0.319

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	31.889
r_dihedral_angle_4_deg	17.91
r_dihedral_angle_3_deg	16.213
r_dihedral_angle_1_deg	6.033
r_scangle_it	3.264
r_scbond_it	2.153
r_angle_refined_deg	1.675
r_mcangle_it	1.437
r_mcbond_it	0.908
r_nbtor_refined	0.319
r_symmetry_vdw_refined	0.271
r_nbd_refined	0.232
r_symmetry_hbond_refined	0.2
r_xyhbond_nbd_refined	0.159
r_chiral_restr	0.103
r_bond_refined_d	0.016
r_gen_planes_refined	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2037
Nucleic Acid Atoms
Solvent Atoms	331
Heterogen Atoms	65

Software

Software
Software Name	Purpose
HKL-2000	data collection
AMoRE	phasing
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.