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X-RAY DIFFRACTION
Materials and Methods page
1G1X
  •   Crystallization Hide
    Crystallization Experiments
    Method VAPOR DIFFUSION, SITTING DROP
    pH 7
    Temperature 293.0
    Details 1.8 M (NH4)2SO4, 20 mM MgCl2, 50 mM Potassium Cacodylate, pH 7.0, VAPOR DIFFUSION, SITTING DROP, temperature 293K
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 169.5 α = 90
    b = 169.5 β = 90
    c = 113.8 γ = 120
     
    Space Group
    Space Group Name:    P 65
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 100
     
    Diffraction Detector
    Detector IMAGE PLATE
    Type MARRESEARCH
    Collection Date 1999-04-26
     
    Diffraction Radiation
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source SYNCHROTRON
    Type SSRL BEAMLINE BL9-1
    Wavelength 0.9800
    Site SSRL
    Beamline BL9-1
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma(I) 0.0
    Resolution(High) 2.6
    Resolution(Low) 50
    Number Reflections(Observed) 57348
    Percent Possible(Observed) 99.9
    R Merge I(Observed) 0.051
    B(Isotropic) From Wilson Plot 71.4
    Redundancy 3.8
     
    High Resolution Shell Details
    Resolution(High) 2.6
    Resolution(Low) 2.69
    Percent Possible(All) 99.9
    R Merge I(Observed) 0.41
    Mean I Over Sigma(Observed) 1.7
    R-Sym I(Observed) 0.279
    Redundancy 3.8
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method MIR
    reflnsShellList 2.6
    Resolution(Low) 50.0
    Cut-off Sigma(F) 0.0
    Number of Reflections(Observed) 57348
    Number of Reflections(R-Free) 1289
    Percent Reflections(Observed) 99.9
    R-Work 0.266
    R-Free 0.298
    R-Free Selection Details random
     
    Temperature Factor Modeling
    Mean Isotropic B Value 44.48
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 2.6
    Shell Resolution(Low) 2.72
    Number of Reflections(R-Free) 60
    Number of Reflections(R-Work) 7071
    R-Factor(R-Work) 0.42
    R-Factor(R-Free) 0.48
    Percent Reflections(Observed) 99.9
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    x_scangle_it 7.75
    x_scbond_it 5.58
    x_mcangle_it 6.35
    x_mcbond_it 4.34
    x_improper_angle_d 1.81
    x_dihedral_angle_d 19.45
    x_angle_deg 2.22
    x_bond_d 0.023
     
    Coordinate Error
    Luzzati ESD(Observed) 0.58
    Luzzati Sigma A(Observed) 0.73
    Luzzati Resolution Cutoff(Low) 5.0
    Luzzati ESD(R-Free Set) 0.68
    Luzzati Sigma A(R-Free Set) 0.65
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 3897
    Nucleic Acid Atoms 3646
    Heterogen Atoms 0
    Solvent Atoms 0
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) MOSFLM
    Data Reduction (data scaling) CCP4 (TRUNCATE)
    Structure Solution MLPHARE
    Structure Refinement X-PLOR
     
    Software
    refinement X-PLOR
    model building MLPHARE