3FAS

X-ray structure of iGluR4 flip ligand-binding core (S1S2) in complex with (S)-glutamate at 1.40A resolution

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1FTJ	1FTJ (poly-Ala)

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.5	280	PEG4000, Acetate, (NH4)2SO4, pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 280K

Crystal Properties
Matthews coefficient	Solvent content
2.84	56.66

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 47.425	α = 90
b = 105.231	β = 97.24
c = 66.538	γ = 90

Symmetry
Space Group	P 1 21 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	110	CCD	MAR CCD 165 mm		2007-06-12	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	MAX II BEAMLINE I911-2	1.0412	MAX II	I911-2

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (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	1.4	27.778	98.1	0.092	0.092	11.3	3.6		124382			14.1

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.4	1.48	100		0.405	0.405	2.3	3.2	18513

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-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1FTJ (poly-Ala)	1.4	26.6	124314	123064	1250	98.04	0.167	0.167	0.183	RANDOM	16.681

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]
-0.28		0.23	0.22		0.11

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	31.432
r_dihedral_angle_4_deg	14.843
r_dihedral_angle_3_deg	11.597
r_dihedral_angle_1_deg	5.625
r_sphericity_free	3.534
r_scangle_it	2.799
r_scbond_it	2.049
r_sphericity_bonded	1.756
r_mcangle_it	1.301
r_angle_refined_deg	1.226
r_rigid_bond_restr	1.195
r_mcbond_it	1.123
r_angle_other_deg	0.845
r_mcbond_other	0.308
r_symmetry_vdw_refined	0.246
r_nbd_refined	0.207
r_nbd_other	0.18
r_nbtor_refined	0.176
r_symmetry_vdw_other	0.167
r_symmetry_hbond_refined	0.108
r_xyhbond_nbd_refined	0.107
r_nbtor_other	0.084
r_chiral_restr	0.077
r_bond_refined_d	0.009
r_gen_planes_refined	0.005
r_gen_planes_other	0.002
r_bond_other_d	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4068
Nucleic Acid Atoms
Solvent Atoms	888
Heterogen Atoms	114

Software

Software
Software Name	Purpose
SCALA	data scaling
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
MAR345dtb	data collection
MOSFLM	data reduction