4KY4

Crystal structure of non-classical TS inhibitor 2 in complex with Toxoplasma gondii TS-DHFR

X-RAY DIFFRACTION

---

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.3	293	18% PEG 3350, 0.1 M Potassium Formate, pH 7.3, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.49	50.51

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 53.539	α = 89.97
b = 145.122	β = 89.95
c = 176.159	γ = 89.89

Symmetry
Space Group	P 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray		PIXEL	PSI PILATUS 6M		2012-11-04	M	SINGLE WAVELENGTH
2	1	x-ray		M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X25	1.1	NSLS	X25

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2.79	48.28	94.34			128608	121332	2	2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 4EIL	2.79	48.28	2	128608	121332	6475	97.77	0.2222	0.2222	0.2198	0.2676	RANDOM	79.025

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]
-1.1	0.25		-3.58	-0.25	4.67

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.737
r_dihedral_angle_4_deg	20.301
r_dihedral_angle_3_deg	19.366
r_mcangle_it	7.641
r_dihedral_angle_1_deg	7.06
r_mcbond_it	5.164
r_mcbond_other	5.164
r_angle_refined_deg	1.636
r_angle_other_deg	0.961
r_chiral_restr	0.089
r_bond_refined_d	0.012
r_gen_planes_refined	0.006
r_bond_other_d	0.003
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	31444
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	976

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
HKL-2000	data collection
HKL-2000	data reduction
PHASER	phasing