2FTO

Y94F mutant of thymidylate synthase bound to thymidine-5'-phosphate and 10-propargyl-5,8-dideazafolid acid

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.5	298	2.5 M ammonium sulfate, 20 mM KH2PO4, 4 mM DTT, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.83	56.5

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 72.08	α = 90
b = 72.08	β = 90
c = 115.21	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	293	DIFFRACTOMETER	ENRAF-NONIUS FAST	graphite monochromator	1996-06-17	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	ENRAF-NONIUS FR571	1.5418

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	50	89	0.069			24431	24431

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Number Reflections (All)	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	Started with coordinates from isomorphous structure 1TSN	2	8.4	19384	18405	979	80.73	0.15919	0.15807	0.17917	RANDOM	24.703

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]
1.08	0.54		1.08		-1.62

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.969
r_dihedral_angle_4_deg	17.738
r_dihedral_angle_3_deg	14.871
r_dihedral_angle_1_deg	6.505
r_scangle_it	4.103
r_scbond_it	2.628
r_mcangle_it	1.63
r_angle_refined_deg	1.507
r_mcbond_it	0.98
r_nbtor_refined	0.311
r_symmetry_hbond_refined	0.222
r_nbd_refined	0.214
r_symmetry_vdw_refined	0.173
r_xyhbond_nbd_refined	0.131
r_chiral_restr	0.101
r_bond_refined_d	0.015
r_gen_planes_refined	0.007
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2152
Nucleic Acid Atoms
Solvent Atoms	98
Heterogen Atoms	66

Software

Software
Software Name	Purpose
REFMAC	refinement
MADNESS	data reduction
PROCOR	data scaling