2XAY

Ribonucleotide reductase Y730NO2Y and C439A modified R1 subunit of E. coli

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2X0X	PDB ENTRY 2X0X

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		6		LITHIUM SULPHATE 1.5M, SODIUM CHLORIDE BUFFER PH 6.

Crystal Properties
Matthews coefficient	Solvent content
3.15	54

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 224.498	α = 90
b = 224.498	β = 90
c = 337.839	γ = 120

Symmetry
Space Group	H 3 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	MARRESEARCH		2009-03-14	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID23-2		ESRF	ID23-2

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	2.65	84.21	98.8	0.11	10.46	3.24		93277		-3.7

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	2.65	2.67	100		0.56	1.88	3.21

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	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	PDB ENTRY 2X0X	2.65	169.031	2	93276	4668	98.52	0.185	0.1823	0.2353	RANDOM	40.635

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]
0.143	0.071		0.143		-0.214

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.991
r_dihedral_angle_3_deg	17.847
r_dihedral_angle_4_deg	17.238
r_dihedral_angle_1_deg	5.689
r_scangle_it	2.134
r_scbond_it	1.238
r_angle_refined_deg	1.203
r_mcangle_it	1.016
r_mcbond_it	0.557
r_nbtor_refined	0.305
r_nbd_refined	0.208
r_symmetry_hbond_refined	0.195
r_symmetry_vdw_refined	0.174
r_xyhbond_nbd_refined	0.167
r_chiral_restr	0.087
r_bond_refined_d	0.009
r_gen_planes_refined	0.003
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_mcangle_other
r_scbond_other
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	17792
Nucleic Acid Atoms
Solvent Atoms	787
Heterogen Atoms

Software

Software
Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling