3HOI

Crystal structure of FMN-dependent nitroreductase BF3017 from Bacteroides fragilis NCTC 9343 (YP_212631.1) from Bacteroides fragilis NCTC 9343 at 1.55 A resolution

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	4.2	277	0.2000M Li2SO4, 20.0000% PEG-1000, 0.1M Phosphate Citrate pH 4.2, NANODROP, VAPOR DIFFUSION, SITTING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.39	48.44

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 48.873	α = 90
b = 48.873	β = 90
c = 295.194	γ = 120

Symmetry
Space Group	P 61 2 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	CCD	MARMOSAIC 325 mm CCD	Flat collimating mirror, toroid focusing mirror	2009-03-18	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL9-2	0.91162,0.97929,0.97905	SSRL	BL9-2

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	1.55	29.514	99.5	0.08	15.72	13.59		31895		-3	20.36

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	1.55	1.61	98.6		0.016	1.6

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	MAD	THROUGHOUT	1.55	29.514	31746	1599	99.52	0.162	0.161	0.187	RANDOM	25.523

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]
1.25	0.63		1.25		-1.88

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.339
r_dihedral_angle_4_deg	16.569
r_dihedral_angle_3_deg	15.697
r_scangle_it	7.933
r_scbond_it	5.859
r_dihedral_angle_1_deg	5.761
r_mcangle_it	2.963
r_mcbond_it	2.187
r_angle_refined_deg	1.705
r_angle_other_deg	1.027
r_mcbond_other	0.494
r_nbd_refined	0.239
r_symmetry_vdw_other	0.235
r_symmetry_hbond_refined	0.208
r_nbd_other	0.204
r_symmetry_vdw_refined	0.194
r_nbtor_refined	0.18
r_xyhbond_nbd_refined	0.17
r_chiral_restr	0.105
r_nbtor_other	0.09
r_bond_refined_d	0.018
r_gen_planes_refined	0.008
r_gen_planes_other	0.003
r_bond_other_d	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1451
Nucleic Acid Atoms
Solvent Atoms	207
Heterogen Atoms	65

Software

Software
Software Name	Purpose
REFMAC	refinement
PHENIX	refinement
SHELX	phasing
MolProbity	model building
XSCALE	data scaling
PDB_EXTRACT	data extraction
XDS	data reduction
SHELXD	phasing
autoSHARP	phasing