1MXF

Crystal Structure of Inhibitor Complex of Putative Pteridine Reductase 2 (PTR2) from Trypanosoma cruzi

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		6.3	293	Sodium acetate, cacodylate buffer, pH 6.30, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.3	46.7

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 74.79	α = 90
b = 74.79	β = 90
c = 180.99	γ = 120

Symmetry
Space Group	P 31

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	103	CCD	MARRESEARCH	MIRRORS	2000-12-20	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 17-ID	0.9537, 0.9791, 0.9792	APS	17-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	1.76	36	80	0.037	11.8	5.1		89619			22.6

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	2.3	19.49	1	48788	47319	2526	94.2	0.197	0.197	0.1983	0.239	0.2406	RANDOM	36.1

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]
3.28	4.53		3.28		-6.56

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	23.5
c_scangle_it	3.38
c_scbond_it	2.26
c_mcangle_it	2.11
c_angle_deg	1.3
c_mcbond_it	1.3
c_improper_angle_d	0.91
c_bond_d	0.006
c_bond_d_na
c_bond_d_prot

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	7348
Nucleic Acid Atoms
Solvent Atoms	346
Heterogen Atoms	324

Software

Software
Software Name	Purpose
HKL-2000	data collection
X-GEN	data reduction
SOLVE	phasing
CNS	refinement
HKL-2000	data reduction
X-GEN	data scaling

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.