3EGY

Crystal Structure of Human Thymidyalte Synthase A191K with Loop 181-197 stabilized in the inactive conformation

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8.5	291	2.0M AS, 0.1M tris pH 8.5, 20mM BME, VAPOR DIFFUSION, HANGING DROP, temperature 291K

Crystal Properties
Matthews coefficient	Solvent content
3.3	62.67

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 95.869	α = 90
b = 95.869	β = 90
c = 82.814	γ = 120

Symmetry
Space Group	P 31 2 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			2003-02-12	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 19-BM	0.9793	APS	19-BM

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	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	2.18	50	92.2	0.056	0.056	9	5.8		21473

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	2.18	2.26	95		0.444		5.7	2169

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		THROUGHOUT	1HW3	2.18	50	21473	1114	92.2	0.183	0.182	0.207	RANDOM	42.08

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]
-0.93	-0.46		-0.93		1.39

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.402
r_dihedral_angle_3_deg	17.481
r_dihedral_angle_4_deg	16.298
r_dihedral_angle_1_deg	6.418
r_scangle_it	4.463
r_scbond_it	2.939
r_angle_refined_deg	1.829
r_mcangle_it	1.788
r_mcbond_it	1.12
r_nbtor_refined	0.314
r_symmetry_vdw_refined	0.229
r_nbd_refined	0.216
r_symmetry_hbond_refined	0.158
r_xyhbond_nbd_refined	0.153
r_chiral_restr	0.137
r_bond_refined_d	0.019
r_gen_planes_refined	0.008
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1927
Nucleic Acid Atoms
Solvent Atoms	125
Heterogen Atoms	14

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
CNS	phasing