3OF4

Crystal structure of a FMN/FAD- and NAD(P)H-dependent nitroreductase (nfnB, IL2077) from Idiomarina loihiensis L2TR at 1.90 A resolution

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	4.6	293	1.60M ammonium sulfate, 20.00% Glycerol, 0.1M sodium acetate pH 4.6, NANODROP, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.42	49.21

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 154.702	α = 90
b = 74.051	β = 112.49
c = 64.565	γ = 90

Symmetry
Space Group	C 1 2 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	CCD	MARMOSAIC 325 mm CCD	Flat mirror (vertical focusing)	2010-06-10	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL11-1	0.91837,0.97920,0.97889	SSRL	BL11-1

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	1.9	29.197	91.7	0.04	11.76			52053		-3	24.96

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	1.9	1.97	87.9		0.354	1.8

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	1.9	29.197	52053	2638	98.09	0.1592	0.1574	0.1937	RANDOM	36.2008

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]
-0.55		-0.03	-0.1		0.63

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.423
r_dihedral_angle_4_deg	18.732
r_dihedral_angle_3_deg	13.192
r_dihedral_angle_1_deg	4.951
r_scangle_it	3.599
r_scbond_it	2.409
r_angle_refined_deg	1.525
r_mcangle_it	1.328
r_angle_other_deg	0.899
r_mcbond_it	0.764

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.423
r_dihedral_angle_4_deg	18.732
r_dihedral_angle_3_deg	13.192
r_dihedral_angle_1_deg	4.951
r_scangle_it	3.599
r_scbond_it	2.409
r_angle_refined_deg	1.525
r_mcangle_it	1.328
r_angle_other_deg	0.899
r_mcbond_it	0.764
r_mcbond_other	0.232
r_chiral_restr	0.084
r_bond_refined_d	0.016
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	4907
Nucleic Acid Atoms
Solvent Atoms	384
Heterogen Atoms	315

Software

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

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 R01GM133198.