2BQ1

Ribonucleotide reductase class 1b holocomplex R1E,R2F from Salmonella typhimurium

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7.5		1:1 MIX OF PROTEIN SOLUTION (8 MG/ML R1E, 4 MG/ML R2F, 1.5 MM DGTP, 1.5 MM ADP, 1.5 MM MGCL2 AND 1.5 MM HYDROXYUREA) AND RESERVOIR SOLUTION CONSISTING OF 100 MM NAHEPES PH 7.5 AND 1.8 M SODIUM FORMATE.

Crystal Properties
Matthews coefficient	Solvent content
3.79	66

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 270.372	α = 90
b = 270.372	β = 90
c = 270.372	γ = 90

Symmetry
Space Group	P 41 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	ADSC CCD		2004-04-23	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-1		ESRF	ID14-1

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	4	40	99.8	0.15	13.5	15.1		29196		1

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	4	4.07	98.8		0.39	4	7.2

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	PDB ENTRY 1PEM	3.99	182.57	27672	1484	99.7	0.265	0.262	0.31	RANDOM	65.31

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]

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	5.546
r_scangle_it	1.07
r_angle_refined_deg	1.036
r_mcangle_it	0.724
r_scbond_it	0.574
r_mcbond_it	0.393
r_nbd_refined	0.216
r_symmetry_vdw_refined	0.187
r_symmetry_hbond_refined	0.176
r_xyhbond_nbd_refined	0.161
r_metal_ion_refined	0.099
r_chiral_restr	0.071
r_bond_refined_d	0.007
r_gen_planes_refined	0.003
r_bond_other_d
r_angle_other_deg
r_dihedral_angle_2_deg
r_dihedral_angle_3_deg
r_dihedral_angle_4_deg
r_gen_planes_other
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_other
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	15452
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	68

Software

Software
Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
BEAST	phasing