5X4X

Mutant human thymidylate synthase A191K crystallized in a sulfate-containing condition

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1HW3

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		298	100mM Tris, pH 8.5, 0.2M lithium sulfate, 1.26M ammonium sulfate

Crystal Properties
Matthews coefficient	Solvent content
3.26	62.3

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 95.46	α = 90
b = 95.46	β = 90
c = 81.181	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	ADSC QUANTUM 210r		2014-06-07	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	AUSTRALIAN SYNCHROTRON BEAMLINE MX1	0.9537	Australian Synchrotron	MX1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Sym I (Observed)	Rrim I (All)	Rpim 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	2.314	82.671	100	0.07	0.073	0.022	22.1	10.6	19057	19057

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Rrim I (All)	Rpim I (All)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.31	2.44	100		0.29	0.29	0.305	0.095	2.7	10.2	2759

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	MOLECULAR REPLACEMENT	THROUGHOUT	1HW3	2.31	82.67	18074	939	99.92	0.1753	0.1726	0.2267	RANDOM	39.021

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]
-1.76	-0.88		-1.76		5.72

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.923
r_dihedral_angle_4_deg	17.375
r_dihedral_angle_3_deg	15.764
r_dihedral_angle_1_deg	7.176
r_angle_refined_deg	1.85
r_angle_other_deg	1.04
r_chiral_restr	0.121
r_bond_refined_d	0.018
r_gen_planes_refined	0.01
r_bond_other_d	0.002

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.923
r_dihedral_angle_4_deg	17.375
r_dihedral_angle_3_deg	15.764
r_dihedral_angle_1_deg	7.176
r_angle_refined_deg	1.85
r_angle_other_deg	1.04
r_chiral_restr	0.121
r_bond_refined_d	0.018
r_gen_planes_refined	0.01
r_bond_other_d	0.002
r_gen_planes_other	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2208
Nucleic Acid Atoms
Solvent Atoms	75
Heterogen Atoms	10

Software

Software
Software Name	Purpose
REFMAC	refinement
SCALA	data scaling
PDB_EXTRACT	data extraction
MOSFLM	data processing
PHASER	phasing

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.