Experiment: 1TT1

CRYSTAL STRUCTURE OF THE GLUR6 LIGAND BINDING CORE IN COMPLEX WITH KAINATE 1.93 A RESOLUTION

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1S7Y	PDB ENTRY 1S7Y

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	streak seeding	4	297	18% PEG 3350, 25 mM Citrate, 2 mM Malonate, 20 mM NaCl, 1 mM EDTA, 10 mM BME, pH 4.0, streak seeding, temperature 297K

Crystal Properties
Matthews coefficient	Solvent content
2.4	48.1

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 46.682	α = 90
b = 106.228	β = 101.38
c = 57.665	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	100	IMAGE PLATE	MARRESEARCH	mirrors	2004-06-14	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU MICROMAX-002	1.5418

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	1.93	24.95	99.3	0.074	10.6	3.8	41434	41047	2	1	16.6

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)
	1.93	2	92.8		0.349	4.07	3.5	3835

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 (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1S7Y	1.93	24.95	41047	41047	2054	99.2	0.1907	0.189	0.189	0.1875	0.216	RANDOM	18.7

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]
6.12		-0.68	-3.23		-2.88

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	21.4
c_angle_deg	1.3
c_improper_angle_d	0.91
c_bond_d	0.007

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4026
Nucleic Acid Atoms
Solvent Atoms	420
Heterogen Atoms	30

Software

Software
Software Name	Purpose
CNS	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
AMoRE	phasing