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X-RAY DIFFRACTION
Materials and Methods page
2B54
  •   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 = 72.97 α = 90
    b = 73.16 β = 90
    c = 54.26 γ = 90
     
    Space Group
    Space Group Name:    P 21 21 21
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 277
     
    Diffraction Detector
    Detector IMAGE PLATE
    Type RIGAKU RAXIS II
    Collection Date 1997-10-26
     
    Diffraction Radiation
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source ROTATING ANODE
    Type RIGAKU RU200
    Wavelength 1.5418
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma(I) 0.0
    Resolution(High) 1.84
    Resolution(Low) 37.44
    Number Reflections(Observed) 21779
    Percent Possible(Observed) 83.7
    R Merge I(Observed) 0.099
    B(Isotropic) From Wilson Plot 9.8
    Redundancy 2.2
     
    High Resolution Shell Details
    Resolution(High) 1.84
    Resolution(Low) 1.87
    Percent Possible(All) 67.3
    R Merge I(Observed) 0.457
    Mean I Over Sigma(Observed) 0.5
    Redundancy 1.6
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method MOLECULAR REPLACEMENT
    reflnsShellList 1.85
    Resolution(Low) 37.44
    Cut-off Sigma(F) 2.0
    Number of Reflections(Observed) 20039
    Number of Reflections(R-Free) 838
    Percent Reflections(Observed) 78.0
    R-Work 0.158
    R-Free 0.263
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Isotropic Thermal Model RESTRAINED
    Mean Isotropic B Value 29.0
    Anisotropic B[1][1] -1.16
    Anisotropic B[1][2] 0.0
    Anisotropic B[1][3] 0.0
    Anisotropic B[2][2] 2.65
    Anisotropic B[2][3] 0.0
    Anisotropic B[3][3] -1.49
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 1.85
    Shell Resolution(Low) 1.97
    Number of Reflections(R-Free) 22
    Number of Reflections(R-Work) 166
    R-Factor(R-Work) 0.354
    R-Factor(R-Free) 0.401
    R-Free Error 0.085
    Percent Reflections(Observed) 4.5
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    c_scangle_it 13.87
    c_scbond_it 14.0
    c_mcangle_it 3.25
    c_mcbond_it 1.89
    c_improper_angle_d 8.27
    c_bond_d 0.154
    c_angle_deg 9.5
    c_dihedral_angle_d 30.2
     
    Coordinate Error
    Luzzati ESD(Observed) 0.21
    Luzzati Sigma A(Observed) 0.4
    Luzzati Resolution Cutoff(Low) 5.0
    Luzzati ESD(R-Free Set) 0.31
    Luzzati Sigma A(R-Free Set) 0.33
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 2398
    Nucleic Acid Atoms 0
    Heterogen Atoms 30
    Solvent Atoms 106
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) PROCESS (RIGAKU)
    Data Reduction (data scaling) SCALE (RIGAKU)
    Structure Solution X-PLOR
    Structure Refinement CNX 2002
     
    Software
    refinement CNX version: 2002
    model building X-PLOR
    data reduction SCALE version: (RIGAKU)
    data collection PROCESS version: (RIGAKU)