2VF0

CRYSTAL STRUCTURE OF THE THYMIDYLATE SYNTHASE K48Q COMPLEXED WITH 5NO2DUMP AND BW1843U89

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7.5		20 MM POTASSIUM PHOSPHATE BUFFER, 4 MM DTT AND INCREMENTS IN AMMONIUM SULFATE FROM 2.05 TO 2.6 M, PH 7.5 TO 8

Crystal Properties
Matthews coefficient	Solvent content
2.6	54

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 127.16	α = 90
b = 127.16	β = 90
c = 67.95	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	298	AREA DETECTOR	ENRAF-NONIUS		1999-11-22	M	SINGLE WAVELENGTH

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 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	2.7	35.58	95.1	0.17	3.7	4.7		15793

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	PDB ENTRIES 1FFL AND 1FWM	3	33.98	12094	611	95.1	0.18	0.18	0.239	RANDOM	20.1

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]
-3.18			-3.18		6.37

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	23.3
c_scangle_it	2.36
c_mcangle_it	1.73
c_scbond_it	1.45
c_angle_deg	1.4
c_mcbond_it	0.99
c_improper_angle_d	0.9
c_bond_d	0.009
c_bond_d_na
c_bond_d_prot
c_angle_d
c_angle_d_na
c_angle_d_prot
c_angle_deg_na
c_angle_deg_prot
c_dihedral_angle_d_na
c_dihedral_angle_d_prot
c_improper_angle_d_na
c_improper_angle_d_prot

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4306
Nucleic Acid Atoms
Solvent Atoms	29
Heterogen Atoms	125

Software

Software
Software Name	Purpose
CNS	refinement
MADNESS	data reduction
PROCOR	data reduction
Agrovata	data scaling
ROTAVATA	data scaling
SCALA	data scaling
TRUNCATE	data scaling
X-PLOR	phasing