3N38

Ribonucleotide Reductase NrdF from Escherichia coli Soaked with Ferrous Ions

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7.6		25% PEG 4000, 0.1 M HEPES pH 7.6, 0.1 M lithium sulfate

Crystal Properties
Matthews coefficient	Solvent content
3.32	62.96

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 79.137	α = 90
b = 79.137	β = 90
c = 267.981	γ = 120

Symmetry
Space Group	P 65 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	113	CCD	MARMOSAIC 225 mm CCD		2010-02-03	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 21-ID-D	1.03324	APS	21-ID-D

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	68.53

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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	MOLECULAR REPLACEMENT	THROUGHOUT	3N37	1.9	68.53	38952	1956	97.3	0.197	0.196	0.22	RANDOM	34.621

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]
0.98	0.49		0.98		-1.48

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.899
r_dihedral_angle_4_deg	20.556
r_dihedral_angle_3_deg	12.157
r_dihedral_angle_1_deg	4.618
r_scangle_it	2.998
r_scbond_it	1.723
r_angle_refined_deg	1.004
r_mcangle_it	0.911
r_mcbond_it	0.442
r_chiral_restr	0.07
r_bond_refined_d	0.009
r_gen_planes_refined	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2277
Nucleic Acid Atoms
Solvent Atoms	154
Heterogen Atoms	2

Software

Software
Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction