3R5L

Structure of Ddn, the Deazaflavin-dependent nitroreductase from Mycobacterium tuberculosis involved in bioreductive activation of PA-824

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6	277	30% PEG 6000, 1M LiCl, 0.1 M MES, pH 6.0, vapor diffusion, sitting drop, temperature 277K
2	VAPOR DIFFUSION, SITTING DROP	6	277	30% PEG 6000, 0.1 M MES, pH 6.0, vapor diffusion, sitting drop, temperature 277K

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 67.167	α = 90
b = 71.045	β = 90
c = 50.528	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		2009-04-04		SINGLE WAVELENGTH
2	2	x-ray	100	CCD	ADSC QUANTUM 315r		2009-04-04		SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 5.0.2	0.979	ALS	5.0.2
2	SYNCHROTRON	ALS BEAMLINE 5.0.2	0.979	ALS	5.0.2

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
1,2	1.55	50	97.7	0.098	27.5	3.9	17466	17466

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)
1,2	1.55	1.61	99.5		0.626	2.5	3.3	1735

Refinement

Statistics
Diffraction ID	Structure Solution 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	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	SAD	1.55	35.523	0.03	16640	16624	866	92.66	0.1815	0.1799	0.2113	random	24.6062

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]
5.3241			-4.0708		-1.2532

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	20.837
f_angle_d	1.734
f_chiral_restr	0.126
f_bond_d	0.015
f_plane_restr	0.01

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	921
Nucleic Acid Atoms
Solvent Atoms	120
Heterogen Atoms	12

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
SOLVE	phasing
PHENIX	refinement
PDB_EXTRACT	data extraction
BOS	data collection
HKL-2000	data reduction
HKL-2000	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.