Experiment: 3N3Y

Crystal structure of Thymidylate Synthase X (ThyX) from Helicobacter pylori with FAD and dUMP at 2.31A resolution

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6	293	0.2M Sodium chloride, 0.1M MES pH 6.0, 20%(w/v) PEG 2000 MME, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.47	50.24

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 65.525	α = 90
b = 79.956	β = 103.14
c = 96.405	γ = 90

Symmetry
Space Group	P 1 21 1

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			M	SINGLE WAVELENGTH
2	1	x-ray	100	CCD	MARMOSAIC 225 mm CCD			M	MAD
1,2	1

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRF BEAMLINE BL17U	0.9794	SSRF	BL17U
2	SYNCHROTRON	SSRF BEAMLINE BL17U	0.9794, 0.9796, 0.9719	SSRF	BL17U

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	2.307	50	99.6	0.063	14.3	3.7		42568

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	2.307	2.39	98.4		0.318		3.2	4166

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	Mean Isotropic B
X-RAY DIFFRACTION	SAD	2.307	37.687	1.34	42533	2144	99.32	0.176	0.174	0.1708	0.223	0.2202	43.844

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]
8.737		7.878	1.231		-9.968

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	19.767
f_angle_d	1.111
f_chiral_restr	0.072
f_bond_d	0.007
f_plane_restr	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6793
Nucleic Acid Atoms
Solvent Atoms	147
Heterogen Atoms	312

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
PHENIX	refinement
PDB_EXTRACT	data extraction
HKL-2000	data collection
HKL-2000	data reduction
PHENIX	phasing