1F76

ESCHERICHIA COLI DIHYDROOROTATE DEHYDROGENASE

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	3.5	298	3.3 to 3.7 M Na-formate, 0.1 M Na-acetate, 25 mM b-OG, 12-15 mg/ml protein, pH 3.5, VAPOR DIFFUSION, SITTING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
3.57	65.5

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 119.7	α = 90
b = 119.7	β = 90
c = 295.97	γ = 90

Symmetry
Space Group	P 41 21 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	108	IMAGE PLATE	MARRESEARCH		1999-06-25	M	MULTIPLE ANOMALOUS DIFFRACTION

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE BM30A		ESRF	BM30A

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	2.5	50	98	0.085	16.1	8.2	75583	920967			34.2

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	2.5	2.54	84.6		0.334			3137

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	2.5	20	73916	73916	7460	98.4	0.177	0.217	RANDOM	32.2

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
o_dihedral_angle_d	22.4
o_scangle_it	3.26
o_scbond_it	2.38
o_mcangle_it	2.14
o_mcbond_it	1.35
o_angle_deg	1.3
o_improper_angle_d	0.95
o_bond_d	0.006
o_bond_d_na
o_bond_d_prot
o_angle_d
o_angle_d_na
o_angle_d_prot
o_angle_deg_na
o_angle_deg_prot
o_dihedral_angle_d_na
o_dihedral_angle_d_prot
o_improper_angle_d_na
o_improper_angle_d_prot

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	10344
Nucleic Acid Atoms
Solvent Atoms	1043
Heterogen Atoms	181

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
SOLVE	phasing
CNS	refinement