1XJN

Structural mechanism of allosteric substrate specificity in a ribonucleotide reductase: dATP-CDP complex


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1XJEPDB entry 1XJE

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP4.5293PEG8000, sodium acetate, sodium chloride, dithiotreithol, pH 4.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Crystal Properties
Matthews coefficientSolvent content
2.5551.68

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 105.97α = 90
b = 123.83β = 104.02
c = 117.41γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDMARRESEARCH2003-01-24MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONEMBL/DESY, HAMBURG BEAMLINE X110.8126EMBL/DESY, HAMBURGX11

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Sym I (Observed)Net I Over Average Sigma (I)RedundancyNumber Reflections (All)Number Reflections (Observed)Observed Criterion Sigma (F)Observed Criterion Sigma (I)B (Isotropic) From Wilson Plot
12.252099.30.09783139338138333
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R-Sym I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
2.252.599.70.3683.23

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUTPDB entry 1XJE2.2519.54131406692799.490.193030.189830.25391RANDOM29.101
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]
-0.741.48-1.082.54
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg37.226
r_dihedral_angle_4_deg19.986
r_dihedral_angle_3_deg19.284
r_dihedral_angle_1_deg7.466
r_scangle_it4.088
r_scbond_it2.654
r_angle_refined_deg1.915
r_mcangle_it1.767
r_mcbond_it1.06
r_nbtor_refined0.309
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg37.226
r_dihedral_angle_4_deg19.986
r_dihedral_angle_3_deg19.284
r_dihedral_angle_1_deg7.466
r_scangle_it4.088
r_scbond_it2.654
r_angle_refined_deg1.915
r_mcangle_it1.767
r_mcbond_it1.06
r_nbtor_refined0.309
r_nbd_refined0.222
r_symmetry_vdw_refined0.193
r_xyhbond_nbd_refined0.171
r_symmetry_hbond_refined0.156
r_chiral_restr0.133
r_bond_refined_d0.02
r_gen_planes_refined0.007
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_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms19664
Nucleic Acid Atoms
Solvent Atoms649
Heterogen Atoms221

Software

Software
Software NamePurpose
REFMACrefinement
MAR345data collection
XDSdata scaling
CNSphasing