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X-RAY DIFFRACTION
Materials and Methods page
106M
  •   Crystallization Hide
    Crystallization Experiments
    pH 9
    Details 3.0 M AMMONIUM SULFATE, 20 MM TRIS, 1MM EDTA, PH 9.0
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 91.51 α = 90
    b = 91.51 β = 90
    c = 45.77 γ = 120
     
    Space Group
    Space Group Name:    P 6
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 292
     
    Diffraction Detector
    Detector IMAGE PLATE
    Type RIGAKU
    Details PINHOLE COLLIMATOR
    Collection Date 1993-04
     
    Diffraction Radiation
    Monochromator GRAPHITE(002)
     
    Diffraction Source
    Type SIEMENS
    Wavelength 1.5418
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma(I) 0.0
    Resolution(High) 1.99
    Resolution(Low) 6
    Number Reflections(Observed) 14633
    Percent Possible(Observed) 96.1
    R Merge I(Observed) 0.069
    B(Isotropic) From Wilson Plot 11.5
    Redundancy 3.31
     
    High Resolution Shell Details
    Resolution(High) 1.99
    Resolution(Low) 2.0
    Percent Possible(All) 99.5
    R Merge I(Observed) 0.259
    Redundancy 3.0
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method MOLECULAR REPLACEMENT
    reflnsShellList 1.99
    Resolution(Low) 5.0
    Cut-off Sigma(F) 0.0
    Number of Reflections(Observed) 13046
    Number of Reflections(R-Free) 1285
    Percent Reflections(Observed) 92.1
    R-Factor(Observed) 0.155
    R-Work 0.155
    R-Free 0.22
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Isotropic Thermal Model RESTRAINED
    Mean Isotropic B Value 20.8
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 1.99
    Shell Resolution(Low) 2.07
    Number of Reflections(R-Free) 153
    Number of Reflections(R-Work) 1366
    R-Factor(R-Work) 0.215
    R-Factor(R-Free) 0.283
    R-Free Error 0.023
    Percent Reflections(Observed) 88.3
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    x_scangle_it 11.23
    x_scbond_it 8.19
    x_mcangle_it 2.97
    x_mcbond_it 2.44
    x_improper_angle_d 1.3
    x_bond_d 0.01
    x_angle_deg 1.4
    x_dihedral_angle_d 18.6
     
    Coordinate Error
    Luzzati ESD(Observed) 0.17
    Luzzati Sigma A(Observed) 0.17
    Luzzati Resolution Cutoff(Low) 5.0
    Luzzati ESD(R-Free Set) 0.23
    Luzzati Sigma A(R-Free Set) 0.21
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 1229
    Nucleic Acid Atoms 0
    Heterogen Atoms 52
    Solvent Atoms 143
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) XDS
    Data Reduction (data scaling) XSCALE
    Structure Solution X-PLOR 3.851
    Structure Refinement X-PLOR 3.851
     
    Software
    refinement X-PLOR version: 3.851
    model building X-PLOR version: 3.851