3V5O

Structural and Mechanistic Studies of Catalysis and Sulfa Drug Resistance in Dihydropteroate Synthase

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	9	291	Bis-Tris propane, Lithium Sulfate, pH 9, VAPOR DIFFUSION, HANGING DROP, temperature 291K

Crystal Properties
Matthews coefficient	Solvent content
2.79	55.84

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 98.023	α = 90
b = 98.023	β = 90
c = 264.145	γ = 120

Symmetry
Space Group	P 62 2 2

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	Si 111	2011-02-05	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 22-ID	1.0	APS	22-ID

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Sym 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	88.8	0.079	33.6	12.3	23961	23961		-3

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.5	2.59	49.8		0.195	7.2	9.2	1307

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	FOURIER SYNTHESIS	THROUGHOUT	1TWS	2.5	48.19	23860	1208	88.62	0.2357	0.2338	0.2736	RANDOM	75.2803

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]
4.4	2.2		4.4		-6.59

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.975
r_dihedral_angle_4_deg	19.459
r_dihedral_angle_3_deg	15.656
r_scangle_it	5.787
r_dihedral_angle_1_deg	4.878
r_scbond_it	4.229
r_mcangle_it	3.863
r_mcbond_it	2.085
r_angle_refined_deg	1.107
r_chiral_restr	0.076
r_bond_refined_d	0.009
r_gen_planes_refined	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4038
Nucleic Acid Atoms
Solvent Atoms	19
Heterogen Atoms	55

Software

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