1Y13

Structural Analysis of Plasmodium falciparum 6-pyruvoyl tetrahydropterin synthase (PTPS)

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6.8	298	PEG 1000, HEPES, Ammonium Chloride - Reservoir: 2.2 M Lithium Chloride, pH 6.8, VAPOR DIFFUSION, SITTING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
3	58.1

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 103.319	α = 90
b = 103.319	β = 90
c = 131.111	γ = 90

Symmetry
Space Group	P 43 21 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	ADSC QUANTUM 315		2004-06-13	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL9-1	0.979029	SSRL	BL9-1

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	2.2	20	99.9	0.162	10.6	11.4		36614		-3	53.55

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.2	2.32	100		0.0121	2.1	11.5	5241

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 (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	SAD	THROUGHOUT	2.2	20	36614	34709	1847	99.85	0.19724	0.19724	0.19536	0.23481	RANDOM	58.965

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]
0.3			0.3		-0.6

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.361
r_dihedral_angle_4_deg	21.741
r_dihedral_angle_3_deg	15.235
r_dihedral_angle_1_deg	6.478
r_scangle_it	6.397
r_scbond_it	5.093
r_mcangle_it	3.132
r_mcbond_it	2.632
r_angle_refined_deg	1.409
r_nbtor_refined	0.304
r_symmetry_vdw_refined	0.217
r_nbd_refined	0.208
r_symmetry_hbond_refined	0.173
r_xyhbond_nbd_refined	0.162
r_chiral_restr	0.095
r_metal_ion_refined	0.071
r_bond_refined_d	0.012
r_gen_planes_refined	0.005
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_other
r_symmetry_vdw_other
r_symmetry_hbond_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	3972
Nucleic Acid Atoms
Solvent Atoms	126
Heterogen Atoms	52

Software

Software
Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
CCP4	data scaling
SOLVE	phasing