3Q1E

Crystal structure of Y116T/I16A double mutant of 5-hydroxyisourate hydrolase in complex with T4

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	7.5	278	0.1M HEPES, 20% PEG 10000, pH 7.5, VAPOR DIFFUSION, temperature 278K

Crystal Properties
Matthews coefficient	Solvent content
2.27	45.73

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 45.771	α = 90
b = 103.462	β = 109.47
c = 53.49	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	CCD	MARMOSAIC 225 mm CCD	SI(111) and Pt coated mirrors in KB geometry	2009-06-21	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID23-2	0.873	ESRF	ID23-2

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	1.95	51.73	99	0.054	9.5	2.5	33889	33889

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)
	1.95	2.06	94.3		0.458	2.1	2.3	4721

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	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	3IWU	1.95	51.73	33863	33863	1717	98.97	0.22489	0.22489	0.22227	0.27116	RANDOM	43.866

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]
4.77		2.88	-1.58		-1.26

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.252
r_dihedral_angle_4_deg	24.084
r_dihedral_angle_3_deg	15.768
r_dihedral_angle_1_deg	6.697
r_scangle_it	3.761
r_scbond_it	2.554
r_angle_refined_deg	1.907
r_mcangle_it	1.477
r_mcbond_it	0.903
r_chiral_restr	0.129
r_bond_refined_d	0.021
r_gen_planes_refined	0.009
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
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_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3579
Nucleic Acid Atoms
Solvent Atoms	55
Heterogen Atoms	10

Software

Software
Software Name	Purpose
ADSC	data collection
MLPHARE	phasing
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling