2FTN

E. coli thymidylate synthase Y94F mutant

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
3.08	60.03

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 131.171	α = 90
b = 131.171	β = 90
c = 131.171	γ = 90

Symmetry
Space Group	I 21 3

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 4		2002-12-05	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 14-BM-C	0.9	APS	14-BM-C

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (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	1.6	11.2	99	0.076	0.076	18.9	10	48479	48479

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.6	1.66	100		0.37	3.1	10	4865

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation 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 IAJM	THROUGHOUT	1.6	11.2	46021	46021	2458	98.16	0.18312	0.18204	0.20359	RANDOM	18.713

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
r_dihedral_angle_2_deg	34.555
r_dihedral_angle_4_deg	18.58
r_dihedral_angle_3_deg	13.823
r_dihedral_angle_1_deg	6.401
r_scangle_it	4.821
r_scbond_it	3.566
r_mcangle_it	2.518
r_mcbond_it	2.169
r_angle_refined_deg	1.518
r_angle_other_deg	0.959
r_mcbond_other	0.369
r_symmetry_vdw_other	0.24
r_nbd_refined	0.236
r_nbd_other	0.198
r_nbtor_refined	0.183
r_symmetry_hbond_refined	0.179
r_symmetry_vdw_refined	0.158
r_xyhbond_nbd_refined	0.133
r_chiral_restr	0.096
r_nbtor_other	0.084
r_bond_refined_d	0.014
r_gen_planes_refined	0.007
r_bond_other_d	0.001
r_gen_planes_other	0.001
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_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	175
Heterogen Atoms	40

Software

Software
Software Name	Purpose
REFMAC	refinement
d*TREK	data scaling