2V7G

Crystal Structure of an Engineered Urocanase Tetramer

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		6.6		10% (W/V) PEG8000, 0.2 M MGAC2, 20% (V/V) GLYCERIN, 0.1 M NA CACODYLATE PH 6.9

Crystal Properties
Matthews coefficient	Solvent content
2.3	47

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 68.068	α = 90
b = 154.316	β = 90
c = 216.391	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	MARREASEARCH		2004-11-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SLS BEAMLINE X06SA		SLS	X06SA

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	2	28.8	97	0.09	14.7	6.3		149793		6.6

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	2	2.06	90		0.33	6.6	5.9

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	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1UWL	2	28.81	148293	1498	100	0.156	0.156	0.181	RANDOM	26.01

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	36.007
r_dihedral_angle_4_deg	18.109
r_dihedral_angle_3_deg	12.636
r_dihedral_angle_1_deg	5.841
r_scangle_it	2.03
r_scbond_it	1.289
r_angle_refined_deg	1.129
r_mcangle_it	0.684
r_mcbond_it	0.447
r_nbtor_refined	0.3
r_nbd_refined	0.189
r_symmetry_vdw_refined	0.142
r_symmetry_hbond_refined	0.133
r_xyhbond_nbd_refined	0.113
r_chiral_restr	0.081
r_bond_refined_d	0.008
r_gen_planes_refined	0.004
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_mcangle_other
r_scbond_other
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	16960
Nucleic Acid Atoms
Solvent Atoms	1310
Heterogen Atoms	258

Software

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