3PMV

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

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3O28

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
2.27	45.91

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 64.22	α = 90
b = 87.23	β = 90
c = 47.4	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	2007-03-14	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	1.79	43.61	98.1	0.05	13.2	4.1	24891	24891		2	26.1

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)
	1.8	1.86	82.9		0.287	3.5	2.9	2050

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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	3O28	1.8	43.61	23631	23631	1259	98.1	0.1987	0.18716	0.18394	0.25232	RANDOM	18.709

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]
-0.33			1.04		-0.71

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	30.004
r_dihedral_angle_4_deg	18.652
r_dihedral_angle_3_deg	14.404
r_dihedral_angle_1_deg	5.919
r_scangle_it	4.305
r_scbond_it	3.213
r_mcangle_it	1.953
r_mcbond_it	1.724
r_angle_refined_deg	1.613
r_angle_other_deg	1.357
r_mcbond_other	0.395
r_symmetry_hbond_refined	0.273
r_symmetry_vdw_refined	0.251
r_symmetry_vdw_other	0.232
r_nbd_refined	0.205
r_nbd_other	0.197
r_xyhbond_nbd_refined	0.193
r_nbtor_refined	0.174
r_chiral_restr	0.097
r_nbtor_other	0.089
r_bond_refined_d	0.017
r_gen_planes_refined	0.007
r_gen_planes_other	0.002
r_bond_other_d	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2043
Nucleic Acid Atoms
Solvent Atoms	359
Heterogen Atoms	86

Software

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