8OFK

Crystal structure of the cysteine-rich Gallus gallus urate oxidase in complex with the 8-azaxanthine inhibitor under reducing conditions (space group C 2 2 21)

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.8	291.15	His6-tagged GgUOX at approx. 22 mg/ml in 50 mM Tris-HCl pH 8.0, 10 mM NaCl, 1 mM TCEP-HCl was incubated with a 20-fold molar excess of AZA. Crystals were obtained by mixing the protein with 8% PGA-LM, 0.3M KBr, 0.1M Tris-HCl pH 7.8 using a 1:1 ratio

Crystal Properties
Matthews coefficient	Solvent content
2.56	52.03

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 107.195	α = 90
b = 125.475	β = 90
c = 238.581	γ = 90

Symmetry
Space Group	C 2 2 21

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		2021-07-20	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	DIAMOND BEAMLINE I24	0.97950	Diamond	I24

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rpim I (All)	CC (Half)	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	1.713	81.502	98.9	0.082	0.042	0.998	8.7	4.4		169907

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rpim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.713	1.742	98.2		1.418	0.768	0.345	0.8	4

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	1.713	81.502	168411	8247	98.014	0.182	0.1815	0.2008	35.416

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]
0.476			-0.665		0.188

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.311
r_dihedral_angle_4_deg	14.195
r_dihedral_angle_3_deg	13.472
r_dihedral_angle_1_deg	6.946
r_lrange_it	6.171
r_lrange_other	6.009
r_scangle_it	1.612
r_scangle_other	1.612
r_angle_refined_deg	1.362
r_angle_other_deg	1.319
r_mcangle_it	1.241
r_mcangle_other	1.241
r_scbond_it	1.051
r_scbond_other	1.051
r_mcbond_it	0.741
r_mcbond_other	0.741
r_nbd_refined	0.193
r_symmetry_nbd_refined	0.193
r_nbd_other	0.185
r_xyhbond_nbd_refined	0.184
r_symmetry_nbd_other	0.172
r_nbtor_refined	0.162
r_symmetry_xyhbond_nbd_refined	0.122
r_symmetry_nbtor_other	0.073
r_chiral_restr	0.069
r_ncsr_local_group_3	0.069
r_ncsr_local_group_6	0.066
r_ncsr_local_group_1	0.063
r_ncsr_local_group_2	0.061
r_ncsr_local_group_5	0.061
r_ncsr_local_group_4	0.056
r_bond_refined_d	0.008
r_gen_planes_refined	0.006
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	9613
Nucleic Acid Atoms
Solvent Atoms	933
Heterogen Atoms	172

Software

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