3BMN

Structure of Pteridine Reductase 1 (PTR1) from Trypanosoma brucei in ternary complex with cofactor (NADP+) and inhibitor (Compound AX3)

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.5	293	2-3M sodium acetate, 10-100mM sodium citrate, pH 4.5, vapor diffusion, hanging drop, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
1.99	38.25

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 73.84	α = 90
b = 87.5	β = 116.08
c = 84.23	γ = 90

Symmetry
Space Group	P 1 21 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100						SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE BM14		ESRF	BM14

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	1.98	75.59	95.8	0.073	14.12			64386		-3	26.881

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)
1	1.98	2.04	91.5		0.343	4.1

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-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1.98	75.59	64384	3209	96	0.209	0.206	0.267	RANDOM	24.048

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]
-2.63		-1.84	3.73		-2.72

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.69
r_dihedral_angle_4_deg	22.869
r_dihedral_angle_3_deg	19.078
r_dihedral_angle_1_deg	6.195
r_scangle_it	4.783
r_scbond_it	3.661
r_angle_refined_deg	2.028
r_mcangle_it	1.919
r_mcbond_it	1.54
r_angle_other_deg	1.043
r_symmetry_hbond_refined	0.25
r_mcbond_other	0.234
r_nbd_refined	0.225
r_symmetry_vdw_refined	0.222
r_xyhbond_nbd_refined	0.216
r_symmetry_vdw_other	0.216
r_nbd_other	0.193
r_nbtor_refined	0.188
r_chiral_restr	0.107
r_nbtor_other	0.092
r_bond_refined_d	0.006
r_gen_planes_refined	0.002
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	7501
Nucleic Acid Atoms
Solvent Atoms	540
Heterogen Atoms	292

Software

Software
Software Name	Purpose
XSCALE	data scaling
MOLREP	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction