3I6R

Plasmodium falciparum dihydroorotate dehydrogenase bound with triazolopyrimidine-based inhibitor DSM74

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3I65	PDB ENTRY 3I65

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.6	293	0.16 M Ammonium sulfate, 0.1 M Sodium Acetate, pH 4.6, 18-20% PEG4000, 25% Glycerol, and 10 mM DTT, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
3.13	60.7

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 85.442	α = 90
b = 85.442	β = 90
c = 138.554	γ = 120

Symmetry
Space Group	P 64

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 315	high-resolution double-crystal monochromator	2009-02-22	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 19-ID	1.0	APS	19-ID

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge 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	2.5	50	99.9	0.063	32.5	7.5	20143	19853	2	2

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)
	2.5	2.75	100		0.624	3.4	7.7

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 3I65	2.5	50	19000	18778	1013	99.88	0.23849	0.23648	0.27595	RANDOM	72.691

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]
1.91	0.96		1.91		-2.87

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.476
r_dihedral_angle_4_deg	18.131
r_dihedral_angle_3_deg	14.555
r_dihedral_angle_1_deg	5.392
r_scangle_it	1.191
r_angle_refined_deg	1.072
r_mcangle_it	0.801
r_scbond_it	0.723
r_mcbond_it	0.444
r_nbtor_refined	0.303
r_symmetry_vdw_refined	0.276
r_nbd_refined	0.196
r_xyhbond_nbd_refined	0.133
r_symmetry_hbond_refined	0.094
r_chiral_restr	0.068
r_bond_refined_d	0.008
r_gen_planes_refined	0.003
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	2984
Nucleic Acid Atoms
Solvent Atoms	39
Heterogen Atoms	63

Software

Software
Software Name	Purpose
HKL-2000	data collection
PHASER	phasing
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling