3EK3

Crystal structure of Nitroreductase with Bound FMN (YP_211706.1) from Bacteroides fragilis NCTC 9343 at 1.70 A resolution

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8	277	65.0000% MPD, 0.1M TRIS pH 8.0, VAPOR DIFFUSION,SITTING DROP,NANODROP, temperature 277K, VAPOR DIFFUSION, SITTING DROP

Crystal Properties
Matthews coefficient	Solvent content
2.33	47.15

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 40.61	α = 90
b = 83.73	β = 90
c = 116.51	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	MARMOSAIC 325 mm CCD	Flat collimating mirror, toroid focusing mirror	2008-08-04	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL9-2	0.91162,0.97932,0.97918	SSRL	BL9-2

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	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	1.7	29.123	96.3	0.058	0.08	10.63			21975		-3	17.497

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	1.7	1.76	94.4		0.521	0.715	1.7

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	1.7	29.123	21941	1124	98.47	0.152	0.15	0.183	RANDOM	17.359

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]
-1.39			2.35		-0.95

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.756
r_dihedral_angle_4_deg	14.226
r_dihedral_angle_3_deg	12.202
r_dihedral_angle_1_deg	5.394
r_scangle_it	5.061
r_scbond_it	3.881
r_mcangle_it	2.204
r_mcbond_it	1.803
r_angle_refined_deg	1.367
r_angle_other_deg	0.926
r_mcbond_other	0.477
r_xyhbond_nbd_refined	0.252
r_nbd_refined	0.227
r_nbd_other	0.191
r_nbtor_refined	0.185
r_symmetry_vdw_other	0.177
r_symmetry_vdw_refined	0.168
r_symmetry_hbond_refined	0.139
r_nbtor_other	0.085
r_chiral_restr	0.083
r_bond_refined_d	0.013
r_gen_planes_refined	0.007
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1437
Nucleic Acid Atoms
Solvent Atoms	205
Heterogen Atoms	63

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