Experiment: 2ZKA

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8.5	298	10mg/ml urate oxidase, 0.2mg/ml 8-azaxanthine, 50mM Tris, 20mM NaCl, PEG 8000 4-10%, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.98	58.67

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 80.172	α = 90
b = 96.227	β = 90
c = 105.408	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	277	CCD	MARMOSAIC 225 mm CCD	mirrors	2005-11-05	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE BM14	0.97625	ESRF	BM14

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	1.61	50	99.4	0.054	12.5	4.6	53004	52656	1	1	18.39

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)
	1.61	1.67	99		0.265	3	4.1	5211

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (I)	Cut-off Sigma (F)	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	rigid body	THROUGHOUT	2IBA	1.61	14.97	1	1	49912	2676	99.02	0.17374	0.17286	0.18972	RANDOM	20.42

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]

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.033
r_dihedral_angle_3_deg	13.121
r_dihedral_angle_4_deg	8.273
r_dihedral_angle_1_deg	5.875
r_scangle_it	4.057
r_scbond_it	2.455
r_mcangle_it	1.624
r_angle_refined_deg	1.488
r_mcbond_it	0.857
r_nbtor_refined	0.309

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.033
r_dihedral_angle_3_deg	13.121
r_dihedral_angle_4_deg	8.273
r_dihedral_angle_1_deg	5.875
r_scangle_it	4.057
r_scbond_it	2.455
r_mcangle_it	1.624
r_angle_refined_deg	1.488
r_mcbond_it	0.857
r_nbtor_refined	0.309
r_nbd_refined	0.208
r_symmetry_vdw_refined	0.18
r_symmetry_hbond_refined	0.107
r_chiral_restr	0.098
r_xyhbond_nbd_refined	0.096
r_metal_ion_refined	0.091
r_bond_refined_d	0.011
r_gen_planes_refined	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2378
Nucleic Acid Atoms
Solvent Atoms	208
Heterogen Atoms	17

Software

Software
Software Name	Purpose
REFMAC	refinement
HKL-2000	data collection
HKL-2000	data reduction
SCALEPACK	data scaling
REFMAC	phasing

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.