1TWW

Dihydropteroate Synthetase, With Bound Substrate Analogue PtPP, From Bacillus anthracis

X-RAY DIFFRACTION

---

Starting Model(s)

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

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 = 98.239	α = 90
b = 98.239	β = 90
c = 262.61	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	MAR CCD 165 mm	mirrors	2004-04-13	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	100	0.059	42.7	12.9	26269	26269	-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	81.7		0.297	3.7	7.7	26269

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 1tws	2.5	50	-3	24847	24847	1311	96.67	0.21267	0.21267	0.21057	0.25355	RANDOM	21.887

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]
4.6	2.3		4.6		-6.91

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	5.825
r_scangle_it	3.774
r_angle_other_deg	3.69
r_scbond_it	2.24
r_angle_refined_deg	2.119
r_mcangle_it	1.452
r_mcbond_it	0.741
r_symmetry_vdw_refined	0.38
r_symmetry_hbond_refined	0.339
r_nbd_other	0.287
r_symmetry_vdw_other	0.275
r_nbd_refined	0.256
r_xyhbond_nbd_refined	0.198
r_nbtor_other	0.112
r_chiral_restr	0.086
r_bond_refined_d	0.02
r_gen_planes_refined	0.006
r_gen_planes_other	0.006
r_bond_other_d

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4074
Nucleic Acid Atoms
Solvent Atoms	162
Heterogen Atoms	83

Software

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