1TWS

Dihydropteroate Synthetase From Bacillus anthracis

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1AD1	PDB entry 1AD1

Crystallization

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

Crystal Properties
Matthews coefficient	Solvent content
3	58.5

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 97.441	α = 90
b = 97.441	β = 90
c = 263.615	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 225 mm CCD	mirrors	2003-06-07	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	30	100	0.079	26.1	7.6	47517	47517	-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	2.07	68.2		0.324	3.4	4	47517

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	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	PDB entry 1AD1	2	30	-3	47517	45053	2422	92.92	0.2141	0.2141	0.21202	0.25459	RANDOM	24.936

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]
3.32	1.66		3.32		-4.99

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	7.638
r_scangle_it	4.612
r_scbond_it	2.811
r_angle_refined_deg	1.685
r_mcangle_it	1.668
r_mcbond_it	0.898
r_angle_other_deg	0.891
r_symmetry_vdw_refined	0.435
r_symmetry_hbond_refined	0.351
r_nbd_other	0.246
r_symmetry_vdw_other	0.234
r_nbd_refined	0.216
r_xyhbond_nbd_refined	0.204
r_chiral_restr	0.104
r_nbtor_other	0.09
r_bond_refined_d	0.021
r_gen_planes_refined	0.007
r_gen_planes_other	0.004
r_bond_other_d	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4186
Nucleic Acid Atoms
Solvent Atoms	325
Heterogen Atoms	60

Software

Software
Software Name	Purpose
REFMAC	refinement
MAR345	data collection
SCALEPACK	data scaling
CNS	phasing