4I71

Crystal structure of the Trypanosoma brucei Inosine-Adenosine-Guanosine nucleoside hydrolase in complex with a trypanocidal compound

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1KIC

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	8	292	0.1M Tris, 19% PEGMME2000, 10mM Ni2SO4, pH 8.0, VAPOR DIFFUSION, temperature 292K

Crystal Properties
Matthews coefficient	Solvent content
2.21	44.38

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 66.36	α = 90
b = 72.35	β = 90
c = 133.28	γ = 90

Symmetry
Space Group	C 2 2 21

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 315r		2010-02-08	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID29	0.976	ESRF	ID29

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	1.28	133.3	95.8	0.048	16.64	3.4	78467	78467		-3	17.811

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.28	1.32	57.8		0.264	0.353	2.84	1.6	3472

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	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	1KIC	1.28	133.3	78467	78467	3944	95.8	0.1269	0.1259	0.1467	RANDOM	14.8256

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]
			0.04		-0.04

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.482
r_dihedral_angle_3_deg	12.971
r_sphericity_free	11.817
r_dihedral_angle_4_deg	10.523
r_dihedral_angle_1_deg	6.177
r_scangle_it	5.497
r_sphericity_bonded	4.949
r_scbond_it	4.023
r_mcangle_it	3.106
r_mcbond_it	2.308
r_rigid_bond_restr	1.99
r_angle_refined_deg	1.744
r_mcbond_other	1.486
r_angle_other_deg	1.037
r_chiral_restr	0.121
r_bond_refined_d	0.019
r_gen_planes_refined	0.005
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2496
Nucleic Acid Atoms
Solvent Atoms	282
Heterogen Atoms	33

Software

Software
Software Name	Purpose
XSCALE	data scaling
MOLREP	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
DNA	data collection
XDS	data reduction