3O6G

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	277	17% PEG 4000, 100mM Sodium Cacodylate pH 4.0, 50mM Lithium Sulphate, 2.5% Glycerol, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.27	45.7

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 64.09	α = 90
b = 87.18	β = 90
c = 47.32	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++		2006-02-27	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	1.8	87.039	98	0.05	13.9	3.7	28946	24720	2	2	24.1

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	1.8	1.86	88		0.303	2.1	1.5

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	1.8	87.039	23489	23489	1231	97.67	0.19078	0.19078	0.18916	0.22273	RANDOM	17.56

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]
-1.19			1.61		-0.42

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	29.164
r_dihedral_angle_4_deg	19.299
r_dihedral_angle_3_deg	13.471
r_dihedral_angle_1_deg	5.306
r_scangle_it	2.534
r_scbond_it	1.838
r_mcangle_it	1.234
r_angle_refined_deg	1.171
r_mcbond_it	1.067
r_angle_other_deg	0.849
r_symmetry_vdw_refined	0.226
r_nbd_refined	0.2
r_nbd_other	0.185
r_symmetry_hbond_refined	0.177
r_mcbond_other	0.175
r_nbtor_refined	0.173
r_symmetry_vdw_other	0.17
r_xyhbond_nbd_refined	0.143
r_nbtor_other	0.086
r_chiral_restr	0.069
r_bond_refined_d	0.009
r_gen_planes_refined	0.004
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2043
Nucleic Acid Atoms
Solvent Atoms	391
Heterogen Atoms	75

Software

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