1TLS

THYMIDYLATE SYNTHASE TERNARY COMPLEX WITH FDUMP AND METHYLENETETRAHYDROFOLATE

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	Other		TS.FDUMP.CB3717

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	7.5		CRYSTALLIZED BY VAPOR DIFFUSION FROM A SOLUTION OF 8MG/ML PROTEIN, 2MM FDUMP, 10MM CH2THF, 20MM PHOSPHATE PH 7.5, 4MM DTT, AND 1.05M AMMONIUM SULFATE; EQUILIBRATED AGAINST A SOLUTION OF 2.10M AMMONIUM SULFATE, 20MM PHOSPHATE PH 7.5, AND 4MM DTT., vapor diffusion

Crystal Properties
Matthews coefficient	Solvent content
2.57	52.12

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 126.78	α = 90
b = 126.78	β = 90
c = 67.71	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	DIFFRACTOMETER	ENRAF-NONIUS FAST		1996-05-25	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	2.6	14.8	99.5	0.101	5.6	3.3		18880

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	2.6	2.77	99.5		0.434	1	2.8

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	TS.FDUMP.CB3717	2.6	14.8	18880	18880		99.5	0.18		18

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
p_transverse_tor	29.7
p_staggered_tor	19.8
p_scangle_it	3.291
p_planar_tor	3
p_mcangle_it	2.705
p_scbond_it	1.994
p_mcbond_it	1.68
p_multtor_nbd	0.216
p_chiral_restr	0.209
p_singtor_nbd	0.207
p_planar_d	0.065
p_angle_d	0.044
p_bond_d	0.017
p_plane_restr	0.014
p_angle_deg
p_hb_or_metal_coord
p_xhyhbond_nbd
p_xyhbond_nbd
p_orthonormal_tor
p_special_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4306
Nucleic Acid Atoms
Solvent Atoms	194
Heterogen Atoms	108

Software

Software
Software Name	Purpose
GPRLSA	refinement
MADNES	data reduction
PROCOR	data reduction
Agrovata	data scaling