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X-RAY DIFFRACTION
Materials and Methods page
2B52
  •   Crystallization Hide
    Crystallization Experiments
    Method VAPOR DIFFUSION, SITTING DROP
    pH 7.4
    Temperature 291.0
    Details 100mM HEPES pH 7.4, 50mM Ammonium Acetate, 2mM DTT, 4-14% PEG 4000 , VAPOR DIFFUSION, SITTING DROP, temperature 291K
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 72.03 α = 90
    b = 72.01 β = 90
    c = 53.5 γ = 90
     
    Space Group
    Space Group Name:    P 21 21 21
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 100
     
    Diffraction Detector
    Detector CCD
    Type MAR CCD 165 mm
    Collection Date 2000-12-15
     
    Diffraction Radiation
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source SYNCHROTRON
    Type APS BEAMLINE 5ID-B
    Wavelength 1.0
    Site APS
    Beamline 5ID-B
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma(I) 0.0
    Resolution(High) 1.88
    Resolution(Low) 20
    Number Reflections(Observed) 23208
    Percent Possible(Observed) 100.0
    R Merge I(Observed) 0.066
    B(Isotropic) From Wilson Plot 17.4
    Redundancy 7.2
     
    High Resolution Shell Details
    Resolution(High) 1.88
    Resolution(Low) 1.95
    Percent Possible(All) 100.0
    R Merge I(Observed) 0.747
    Mean I Over Sigma(Observed) 3.0
    Redundancy 6.4
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method molecular replacement
    reflnsShellList 1.88
    Resolution(Low) 18.71
    Cut-off Sigma(F) 2.0
    Number of Reflections(Observed) 20200
    Number of Reflections(R-Free) 1603
    Percent Reflections(Observed) 86.8
    R-Work 0.219
    R-Free 0.275
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Isotropic Thermal Model RESTRAINED
    Mean Isotropic B Value 42.1
    Anisotropic B[1][1] -8.42
    Anisotropic B[1][2] 0.0
    Anisotropic B[1][3] 0.0
    Anisotropic B[2][2] 7.3
    Anisotropic B[2][3] 0.0
    Anisotropic B[3][3] 1.12
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 1.88
    Shell Resolution(Low) 2.0
    Number of Reflections(R-Free) 195
    Number of Reflections(R-Work) 2296
    R-Factor(R-Work) 0.308
    R-Factor(R-Free) 0.288
    R-Free Error 0.021
    Percent Reflections(Observed) 64.9
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    c_scangle_it 3.0
    c_scbond_it 1.84
    c_mcangle_it 2.59
    c_mcbond_it 1.47
    c_improper_angle_d 0.84
    c_bond_d 0.007
    c_angle_deg 1.7
    c_dihedral_angle_d 22.3
     
    Coordinate Error
    Luzzati ESD(Observed) 0.27
    Luzzati Sigma A(Observed) 0.29
    Luzzati Resolution Cutoff(Low) 5.0
    Luzzati ESD(R-Free Set) 0.31
    Luzzati Sigma A(R-Free Set) 0.2
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 2277
    Nucleic Acid Atoms 0
    Heterogen Atoms 31
    Solvent Atoms 60
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) DENZO
    Data Reduction (data scaling) SCALEPACK
    Structure Solution EPMR
    Structure Refinement CNX 2002
     
    Software
    refinement CNX version: 2002
    model building EPMR
    data reduction SCALEPACK
    data collection DENZO