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X-RAY DIFFRACTION
Materials and Methods page
1Z7J
  •   Crystallization Hide
    Crystallization Experiments
    Method VAPOR DIFFUSION, HANGING DROP
    pH 5.5
    Temperature 4.0
    Details 48% ammonium sulfate, 0.l M phosphate buffer, pH 5.50, VAPOR DIFFUSION, HANGING DROP, temperature 4.0K
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 43.46 α = 90
    b = 85.86 β = 90
    c = 65.44 γ = 90
     
    Space Group
    Space Group Name:    P 21 21 2
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 293
     
    Diffraction Detector
    Detector IMAGE PLATE
    Type RIGAKU RAXIS II
    Details COLLIMATOR
    Collection Date 1999-01-22
     
    Diffraction Radiation
    Monochromator GRAPHITE
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source ROTATING ANODE
    Type RIGAKU RU200
    Wavelength List 1.5418
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma (F) 0.0
    Observed Criterion Sigma(I) 1.0
    Resolution(High) 2.2
    Resolution(Low) 43.46
    Number Reflections(Observed) 11346
    Percent Possible(Observed) 94.5
    R Merge I(Observed) 0.0587
    B(Isotropic) From Wilson Plot 23.3
    Redundancy 3.45
     
    High Resolution Shell Details
    Resolution(High) 2.2
    Resolution(Low) 2.3
    Percent Possible(All) 73.7
    R Merge I(Observed) 0.061
    Mean I Over Sigma(Observed) 2.44
    Redundancy 2.37
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method FOURIER SYNTHESIS
    reflnsShellList 2.2
    Resolution(Low) 14.87
    Cut-off Sigma(F) 2.0
    Number of Reflections(Observed) 10228
    Number of Reflections(R-Free) 953
    Percent Reflections(Observed) 78.9
    R-Factor(Observed) 0.173
    R-Work 0.173
    R-Free 0.217
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Isotropic Thermal Model RESTRAINED
    Mean Isotropic B Value 32.5
    Anisotropic B[1][1] 0.0
    Anisotropic B[1][2] 0.0
    Anisotropic B[1][3] 0.0
    Anisotropic B[2][2] 0.0
    Anisotropic B[2][3] 0.0
    Anisotropic B[3][3] 0.0
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 2.2
    Shell Resolution(Low) 2.3
    Number of Reflections(R-Free) 81
    Number of Reflections(R-Work) 832
    R-Factor(R-Work) 0.21
    R-Factor(R-Free) 0.293
    R-Free Error 0.033
    Percent Reflections(Observed) 57.6
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    c_scangle_it 6.37
    c_scbond_it 7.55
    c_mcangle_it 2.55
    c_mcbond_it 1.52
    c_improper_angle_d 0.73
    c_dihedral_angle_d 24.9
    c_angle_deg 1.2
    c_bond_d 0.007
     
    Coordinate Error
    Luzzati ESD(Observed) 0.21
    Luzzati Sigma A(Observed) 0.2
    Luzzati Resolution Cutoff(Low) 5.0
    Luzzati ESD(R-Free Set) 0.28
    Luzzati Sigma A(R-Free Set) 0.26
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 1807
    Nucleic Acid Atoms 0
    Heterogen Atoms 44
    Solvent Atoms 86
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) R-AXIS
    Data Reduction (data scaling) R-AXIS
    Structure Solution CNS 1.1
    Structure Refinement CNS 1.1
     
    Software
    refinement CNS version: 1.1
    model building CNS version: 1.1
    data reduction SCALEPACK
    data collection R-AXIS