3JSO

Classic Protein With a New Twist: crystal structure of a LexA repressor DNA complex


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1hanging drop6.82920.1M Bis-tris propane, 0.05M sodium tartrate, 10% glycerol, 15% ethylene glycol, 14% (w/v) PEG3350, pH 6.8, hanging drop, temperature 292K
Crystal Properties
Matthews coefficientSolvent content
3.0659.78

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 100.975α = 90
b = 106.935β = 90
c = 65.895γ = 90
Symmetry
Space GroupP 21 21 2

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDRAYONIX MX-300mirros2008-12-05MSINGLE WAVELENGTH
21x-rayMMAD
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONAPS BEAMLINE 21-ID-F0.97872APS21-ID-F

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
1,22.295072.20.06521.45.4235702357055

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodResolution (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 DIFFRACTIONMAD, MRTHROUGHOUT2.2937.5321609108466.230.2680.2660.306RANDOM84.018
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]
-0.27-0.360.64
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg34.855
r_dihedral_angle_3_deg13.314
r_dihedral_angle_4_deg10.96
r_dihedral_angle_1_deg3.826
r_angle_refined_deg0.915
r_scangle_it0.527
r_scbond_it0.283
r_mcangle_it0.179
r_mcbond_it0.099
r_chiral_restr0.048
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg34.855
r_dihedral_angle_3_deg13.314
r_dihedral_angle_4_deg10.96
r_dihedral_angle_1_deg3.826
r_angle_refined_deg0.915
r_scangle_it0.527
r_scbond_it0.283
r_mcangle_it0.179
r_mcbond_it0.099
r_chiral_restr0.048
r_bond_refined_d0.005
r_gen_planes_refined0.003
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms2902
Nucleic Acid Atoms896
Solvent Atoms81
Heterogen Atoms

Software

Software
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
PHASERphasing
SOLVEphasing
DMphasing
REFMACrefinement
PDB_EXTRACTdata extraction
HKL-2000data collection