3BMO

Structure of Pteridine Reductase 1 (PTR1) from Trypanosoma brucei in ternary complex with cofactor (NADP+) and inhibitor (Compound AX4)

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
2.07	40.47

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 74.73	α = 90
b = 90.987	β = 115.79
c = 82.818	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	SRS BEAMLINE PX14.1		SRS	PX14.1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (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	1.6	23.78	96	0.047	0.047	12.2	3.5		125691

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.6	1.69	91.4		0.3	0.3	2.4	3.3

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	1.6	22.38	119087	6280	95.68	0.11997	0.11836	0.15029	RANDOM	12.148

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]
-0.63		-0.36	0.73		-0.42

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.669
r_dihedral_angle_4_deg	17.768
r_dihedral_angle_3_deg	13.262
r_dihedral_angle_1_deg	5.795
r_scangle_it	4.118
r_scbond_it	2.745
r_mcangle_it	2.09
r_angle_refined_deg	1.644
r_mcbond_it	1.26
r_angle_other_deg	0.871
r_mcbond_other	0.359
r_symmetry_vdw_other	0.268
r_metal_ion_refined	0.261
r_symmetry_vdw_refined	0.237
r_nbd_refined	0.221
r_symmetry_hbond_refined	0.216
r_xyhbond_nbd_refined	0.194
r_nbd_other	0.182
r_nbtor_refined	0.175
r_chiral_restr	0.094
r_nbtor_other	0.085
r_bond_refined_d	0.016
r_gen_planes_refined	0.008
r_bond_other_d	0.001
r_gen_planes_other	0.001
r_xyhbond_nbd_other
r_metal_ion_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	7498
Nucleic Acid Atoms
Solvent Atoms	1211
Heterogen Atoms	367

Software

Software
Software Name	Purpose
MOSFLM	data reduction
SCALA	data scaling
MOLREP	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction