1AIQ

CRYSTAL STRUCTURE OF THYMIDYLATE SYNTHASE R126E MUTANT

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		8		2.4M AMMONIUM SULFATE, 20MM, pH 8.0

Crystal Properties
Matthews coefficient	Solvent content
2.55	52

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 126.61	α = 90
b = 126.61	β = 90
c = 67.3	γ = 120

Symmetry
Space Group	P 63

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	295	DIFFRACTOMETER	ENRAF-NONIUS FAST		1995-12-28	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	ENRAF-NONIUS FR571

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	2.2	20	92	0.052		3.5		33337		2

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	2.5	75		0.22	2.2

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-Work (Depositor)	R-Free (Depositor)	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR	2.2	20	2	29307		90	0.163

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]

RMS Deviations
Key	Refinement Restraint Deviation
t_dihedral_angle_d	18.785
t_angle_deg	1.009
t_nbd	0.022
t_gen_planes	0.013
t_bond_d	0.009
t_trig_c_planes	0.006
t_incorr_chiral_ct
t_pseud_angle
t_it

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4302
Nucleic Acid Atoms
Solvent Atoms	176
Heterogen Atoms	110

Software

Software
Software Name	Purpose
AMoRE	phasing
TNT	refinement
PROCOR	data reduction
FBSCALE	data scaling

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 R01GM157729.