4D19

Crystal structure of cofactor-free urate oxidase in complex with its 5-peroxoisourate intermediate (X-ray dose, 1.75 MGy)

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		8		20MG/ML UOX IN 50 MM TRIS-ACETATE PH 8.0 SATURATED WITH 9-METHYL URIC ACID UNDER ANAEROBIC CONDITIONS RESERVOIR: 8% PEG 8000, 50 MM TRIS-ACETATE PH 8.0 CRYSTALLIZATION WAS CARRIED OUT ANAEROBICALLY. CRYSTALS WERE INCUBATED WITH A RESERVOIR SOLUTION ENRICHED BY 10 MM H2O2 AND 20% GLYCEROL TO GENERATE THE PEROXIDE

Crystal Properties
Matthews coefficient	Solvent content
2.9	57.4

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 79.94	α = 90
b = 95.13	β = 90
c = 104.11	γ = 90

Symmetry
Space Group	I 2 2 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	PIXEL	DECTRIS PILATUS 6M		2013-12-08	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	DIAMOND BEAMLINE I02		Diamond	I02

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	1.35	52.06	99.7	0.1	10.3	6.6		86674		-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	1.35	1.39	99		0.65	2.5	6.7

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	OTHER	THROUGHOUT	NONE	1.35	52.06	82329	4345	99.6	0.10752	0.10634	0.12973	RANDOM	13.75

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]
0.74			-0.31		-0.44

RMS Deviations
Key	Refinement Restraint Deviation
r_sphericity_free	39.581
r_sphericity_bonded	9.556
r_rigid_bond_restr	1.523
r_scbond_it	1.518
r_mcangle_it	1.418
r_angle_refined_deg	1.371
r_mcbond_it	1.091
r_mcbond_other	1.091
r_angle_other_deg	0.747
r_chiral_restr	0.082
r_bond_refined_d	0.008
r_gen_planes_refined	0.008
r_gen_planes_other	0.002
r_bond_other_d	0.001
r_dihedral_angle_1_deg
r_dihedral_angle_2_deg
r_dihedral_angle_3_deg
r_dihedral_angle_4_deg
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcangle_other
r_scbond_other
r_scangle_it
r_scangle_other
r_long_range_B_refined
r_long_range_B_other

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2360
Nucleic Acid Atoms
Solvent Atoms	591
Heterogen Atoms	36

Software

Software
Software Name	Purpose
REFMAC	refinement
XDS	data reduction
Aimless	data scaling