1E7W

One active site, two modes of reduction correlate the mechanism of leishmania pteridine reductase with pterin metabolism and antifolate drug resistance in trpanosomes

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		5.4		pH 5.40

Crystal Properties
Matthews coefficient	Solvent content
2.4	48.66

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 80.312	α = 90
b = 80.8	β = 90
c = 90.747	γ = 90

Symmetry
Space Group	P 21 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					M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SRS BEAMLINE PX9.6	0.87, 0.886, 0.97950, 0.97960	SRS	PX9.6

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	1.75	30	98.2	0.45	24.6	5.7		59475			25.7

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	1.75	30	56168	3016	98.2	0.196	0.244	RANDOM	32.5

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]

RMS Deviations
Key	Refinement Restraint Deviation
p_transverse_tor	27.615
p_staggered_tor	14.776
p_scangle_it	4.375
p_mcangle_it	3.564
p_scbond_it	3.229
p_mcbond_it	2.799
p_planar_tor	2.629
p_multtor_nbd	0.28
p_chiral_restr	0.222
p_singtor_nbd	0.182
p_xyhbond_nbd	0.144
p_planar_d	0.041
p_angle_d	0.032
p_bond_d	0.015
p_plane_restr	0.003
p_angle_deg
p_hb_or_metal_coord
p_xhyhbond_nbd
p_orthonormal_tor
p_special_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3917
Nucleic Acid Atoms
Solvent Atoms	476
Heterogen Atoms	174

Software

Software
Software Name	Purpose
REFMAC	refinement