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X-RAY DIFFRACTION
Materials and Methods page
1IBM
  •   Crystallization Hide
    Crystallization Experiments
    Method VAPOR DIFFUSION, HANGING DROP
    pH 6.5
    Temperature 277.0
    Details MPD, AMMONIUM CHLORIDE, POTASSIUM CHLORIDE, MAGNESIUM ACETATE, SODIUM CACODYLATE pH 6.5, VAPOR DIFFUSION, HANGING DROP at 277K, pH 6.50
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 401.57 α = 90
    b = 401.57 β = 90
    c = 176.11 γ = 90
     
    Space Group
    Space Group Name:    P 41 21 2
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 90
     
    Diffraction Detector
    Detector CCD
    Type CUSTOM-MADE
    Collection Date 2001-02-23
     
    Diffraction Radiation
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source SYNCHROTRON
    Type APS BEAMLINE 19-ID
    Wavelength 0.99187
    Wavelength List 0.99187
    Site APS
    Beamline 19-ID
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma(I) 0.0
    Resolution(High) 3.31
    Resolution(Low) 316.23
    Number Reflections(Observed) 206478
    Percent Possible(Observed) 97.5
    B(Isotropic) From Wilson Plot 68.8
    Redundancy 4.69
     
    High Resolution Shell Details
    Resolution(High) 3.31
    Resolution(Low) 3.43
    Percent Possible(All) 93.6
    Mean I Over Sigma(Observed) 2.6
    R-Sym I(Observed) 0.654
    Redundancy 2.53
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method DIFFERENCE FOURIER
    reflnsShellList 3.31
    Resolution(Low) 316.23
    Number of Reflections(all) 201914
    Number of Reflections(Observed) 192254
    Number of Reflections(R-Free) 9660
    Percent Reflections(Observed) 90.6
    R-Work 0.231
    R-Free 0.286
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Mean Isotropic B Value 68.92
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 3.31
    Shell Resolution(Low) 3.43
    Number of Reflections(R-Free) 816
    Number of Reflections(R-Work) 15494
    R-Factor(R-Work) 0.3208
    R-Factor(R-Free) 0.3708
    Percent Reflections(Observed) 77.6
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    c_improper_angle_d 1.5
    c_bond_d 0.007
    c_angle_deg 1.23
    c_dihedral_angle_d 28.35
     
    Coordinate Error
    Luzzati ESD(Observed) 0.4
    Luzzati Sigma A(Observed) 0.56
    Luzzati Resolution Cutoff(Low) 5.0
    Luzzati ESD(R-Free Set) 0.5
    Luzzati Sigma A(R-Free Set) 0.64
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 19220
    Nucleic Acid Atoms 32818
    Heterogen Atoms 122
    Solvent Atoms 0
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) HKL-2000
    Data Reduction (data scaling) SCALEPACK
    Structure Solution CNS
    Structure Refinement CNS
     
    Software
    refinement CNS
    model building CNS
    data reduction SCALEPACK
    data collection HKL2000