2QNK

Crystal structure of human 3-hydroxyanthranilate 3,4-dioxygenase

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP		277	Protein solution (10 mg/ml Protein, 0.050 M Sodium chloride, 0.0031 M Sodium azide, 0.0003 M TCEP, 0.005 M Bis-Tris pH 7.0) mixed in a 1:1 ratio with the well solution (50% v/v 2-Methyl-2,4-pentanediol (MPD), 0.1 M PIPES pH 6.5) and cryoprotected with well solution, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.6	52.2

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 50.498	α = 90
b = 78.227	β = 90
c = 85.08	γ = 90

Symmetry
Space Group	P 21 21 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	CCD	MARMOSAIC 300 mm CCD	Adjustable focus K-B pair Si plus Pt, Rh coatings	2007-07-06	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 23-ID-B	0.97943, 0.96420	APS	23-ID-B

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	1.6	37.4	99.7	0.074	15.276	13.7		45122

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	1.6	1.64	96.2		0.377	4.1037	9.3	2860

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	1.6	30.92	45034	2268	99.476	0.158	0.157	0.176	RANDOM	18.034

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]
-0.02			1.025		-1.004

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.039
r_dihedral_angle_4_deg	15.842
r_dihedral_angle_3_deg	11.889
r_dihedral_angle_1_deg	6.412
r_scangle_it	5.116
r_scbond_it	3.583
r_mcangle_it	2.219
r_angle_refined_deg	1.487
r_mcbond_it	1.378
r_nbtor_refined	0.308
r_nbd_refined	0.199
r_symmetry_vdw_refined	0.146
r_xyhbond_nbd_refined	0.133
r_symmetry_hbond_refined	0.124
r_chiral_restr	0.113
r_bond_refined_d	0.013
r_gen_planes_refined	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2291
Nucleic Acid Atoms
Solvent Atoms	413
Heterogen Atoms	6

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
SHARP	phasing
DM	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
MAR345	data collection
HKL-2000	data reduction