3C0A

Lactobacillus CASEI Thymidylate Synthase Ternary Complex with DUMP and the Phtalimidic Derivative 14C in Multiple Binding Modes-Mode 2

X-RAY DIFFRACTION

Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.4	293	4mg/mL LcTS, 1mM EDTA, 40mM dUMP, 20mM TRIS HCl,100mM ammonium phosphate, 5% PEG 400 v/v, 10-12% ligand solution in DMSO, pH 7.4, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.73	54.87

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 78.518	α = 90
b = 78.518	β = 90
c = 224.377	γ = 120

Symmetry
Space Group	P 61 2 2

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	MARMOSAIC 225 mm CCD		2005-01-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID23-1	1.008	ESRF	ID23-1

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	2.4	50.32	99	0.095	0.095	5.6	10.32	16609	16609		1.4	55.434

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.4	2.53	99.1		0.528	0.528	1.4	10.69	2363

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (I)	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 ENTRY 1LCE	2.4	50.32	1.4	15087	1505	100	0.25541	0.24827	0.32615	RANDOM	48.242

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]
0.18	0.09		0.18		-0.26

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.622
r_dihedral_angle_4_deg	23.738
r_dihedral_angle_3_deg	23.055
r_dihedral_angle_1_deg	7.819
r_scangle_it	3.225
r_angle_refined_deg	2.201
r_scbond_it	2.175
r_mcangle_it	1.676
r_mcbond_it	0.959
r_nbtor_refined	0.32

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.622
r_dihedral_angle_4_deg	23.738
r_dihedral_angle_3_deg	23.055
r_dihedral_angle_1_deg	7.819
r_scangle_it	3.225
r_angle_refined_deg	2.201
r_scbond_it	2.175
r_mcangle_it	1.676
r_mcbond_it	0.959
r_nbtor_refined	0.32
r_nbd_refined	0.253
r_symmetry_vdw_refined	0.241
r_xyhbond_nbd_refined	0.204
r_chiral_restr	0.136
r_symmetry_hbond_refined	0.091
r_bond_refined_d	0.019
r_gen_planes_refined	0.007

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2383
Nucleic Acid Atoms
Solvent Atoms	78
Heterogen Atoms	39

Software

Software
Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling
MOLREP	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.