2OZY

Crystal structure of E.coli nrfB

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7.5	289	Purified NrfB was concentrated to 8 mg/ml before crystallization. Crystals were obtained by the vapour diffusion method under anaerobic conditions using 250 mM tri-sodium citrate, 10 mM Na2S2O4 and 20 % (v/v) isopropanol in 100 mM sodium HEPES pH 7.5, temperature 289K

Crystal Properties
Matthews coefficient	Solvent content
2.66	53.67

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 49.683	α = 90
b = 59.668	β = 90
c = 65.207	γ = 90

Symmetry
Space Group	P 21 21 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 315		2006-05-05	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID23-1		ESRF	ID23-1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym 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	1.74	44.023	97.4	0.122	0.122	4.8	2.8	19836	19836			11.2

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.74	1.83	99.3		0.451	0.451	1.6	2.7	2915

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	SAD	THROUGHOUT	1.74	44.02	19815	19815	1027	96.63	0.171	0.171	0.169	0.204	RANDOM	13.706

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]
-0.02			0.02

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.541
r_dihedral_angle_4_deg	17.239
r_dihedral_angle_3_deg	16.579
r_dihedral_angle_1_deg	5.398
r_scangle_it	3.047
r_scbond_it	1.93
r_angle_refined_deg	1.504
r_mcangle_it	1.226
r_mcbond_it	0.732
r_nbd_refined	0.345
r_nbtor_refined	0.29
r_symmetry_hbond_refined	0.229
r_symmetry_vdw_refined	0.172
r_xyhbond_nbd_refined	0.157
r_chiral_restr	0.094
r_bond_refined_d	0.013
r_gen_planes_refined	0.008

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1099
Nucleic Acid Atoms
Solvent Atoms	198
Heterogen Atoms	215

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
ADSC	data collection
MOSFLM	data reduction
SHELXS	phasing