1O27

Crystal structure of Thymidylate Synthase Complementing Protein (TM0449) from Thermotoga maritima with FAD and BrdUMP at 2.3 A resolution

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1KQ4

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.5	295	45% PEG 200, 0.1M HEPES, pH 7.5, VAPOR DIFFUSION,HANGING DROP, temperature 295K

Crystal Properties
Matthews coefficient	Solvent content
2.06	39.74

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 54.349	α = 90
b = 116.428	β = 90
c = 140.557	γ = 90

Symmetry
Space Group	P 21 21 21

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 4r	Flat mirror,single crystal Si(311) bent monochromator	2002-03-20	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL9-1		SSRL	BL9-1

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	2.3	46.477	98	0.081	17.5	5.7	39615	39615			34.877

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)
	2.3	2.36	93.1		0.445	3.5	5.4	2762

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-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MR	THROUGHOUT	1KQ4	2.3	20	2	39539	39284	1971	97.2	0.1882	0.23	32.9

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]
-6.698			1.942		4.756

RMS Deviations
Key	Refinement Restraint Deviation
c_scangle_it	2.935
c_scbond_it	1.98
c_mcangle_it	1.865
c_angle_deg	1.22
c_mcbond_it	1.176
c_bond_d	0.007

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	7221
Nucleic Acid Atoms
Solvent Atoms	201
Heterogen Atoms	296

Software

Software
Software Name	Purpose
MOSFLM	data reduction
SCALA	data scaling
RESOLVE	model building
SOLVE	phasing
CNS	refinement
CCP4	data scaling
RESOLVE	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 R01GM157729.