2Z26

Thr110Ala dihydroorotase from E. coli

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.25	277	17% PEG3350, 0.1M MES, 75mM MgCl2, 0.15M KCl, pH 6.25, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.36	47.86

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 51.493	α = 90
b = 78.885	β = 90
c = 180.091	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		2006-04-22	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 23-ID-B	0.9793	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	1.29	32	91.1	0.071	20.5	6.8	166743	166743			16.1

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)
	1.29	1.32	49.8		0.363	3	3.1	6718

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1XGE	1.29	32	166743	166743	8407	91.1	0.131	0.129	0.154	RANDOM	17.902

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]
-0.17			0.15		0.02

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	31.197
r_dihedral_angle_4_deg	14.488
r_sphericity_free	12.383
r_dihedral_angle_3_deg	10.455
r_sphericity_bonded	6.448
r_dihedral_angle_1_deg	6.198
r_scangle_it	5.347
r_scbond_it	4.168
r_mcangle_it	4.087
r_mcbond_it	3.59
r_mcbond_other	3.49
r_rigid_bond_restr	2.44
r_angle_refined_deg	1.354
r_angle_other_deg	0.831
r_symmetry_vdw_other	0.243
r_nbd_refined	0.217
r_symmetry_vdw_refined	0.207
r_symmetry_hbond_refined	0.188
r_nbd_other	0.178
r_nbtor_refined	0.177
r_xyhbond_nbd_refined	0.11
r_chiral_restr	0.083
r_nbtor_other	0.082
r_metal_ion_refined	0.059
r_bond_refined_d	0.009
r_gen_planes_refined	0.007
r_bond_other_d	0.001
r_gen_planes_other	0.001
r_xyhbond_nbd_other
r_metal_ion_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	5464
Nucleic Acid Atoms
Solvent Atoms	782
Heterogen Atoms	45

Software

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