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X-RAY DIFFRACTION
Materials and Methods page
2F5B
  •   Crystallization Hide
    Crystallization Experiments
    pH 6.5
    Details 1.6M AMMONIUM SULFATE, 0.1 M CITRATE PH 5.0, pH 6.5
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 58 α = 90
    b = 65 β = 90
    c = 175.6 γ = 90
     
    Space Group
    Space Group Name:    P 21 21 21
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 100
     
    Diffraction Detector
    Detector CCD
    Type SIEMENS
    Details QUARTZ MIRROR
    Collection Date 1998-03
     
    Diffraction Radiation
    Monochromator SI (1,1,1)
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source SYNCHROTRON
    Type NSLS BEAMLINE X8C
    Wavelength 0.979
    Site NSLS
    Beamline X8C
     
     
  •   Refinement Data Hide
    Reflection Details
    Resolution(High) 2
    Resolution(Low) 12
    Number Reflections(All) 45917
    Number Reflections(Observed) 39621
    Percent Possible(Observed) 90.0
    B(Isotropic) From Wilson Plot 19.7
    Redundancy 2.8
     
    High Resolution Shell Details
    Resolution(High) 2.0
    Resolution(Low) 2.1
    Percent Possible(All) 93.0
    Mean I Over Sigma(Observed) 3.8
    R-Sym I(Observed) 0.313
    Redundancy 3.0
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method MOLECULAR REPLACEMENT
    reflnsShellList 2.0
    Resolution(Low) 20.0
    Cut-off Sigma(F) 0.0
    Number of Reflections(all) 45917
    Number of Reflections(Observed) 39621
    Number of Reflections(R-Free) 1973
    Percent Reflections(Observed) 86.7
    R-Work 0.232
    R-Free 0.258
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Isotropic Thermal Model RESTRAINED
    Mean Isotropic B Value 33.3
    Anisotropic B[1][1] -1.72
    Anisotropic B[1][2] 0.0
    Anisotropic B[1][3] 0.0
    Anisotropic B[2][2] 1.65
    Anisotropic B[2][3] 0.0
    Anisotropic B[3][3] 0.06
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 2.0
    Shell Resolution(Low) 2.13
    Number of Reflections(R-Free) 298
    Number of Reflections(R-Work) 6208
    R-Factor(R-Work) 0.242
    R-Factor(R-Free) 0.268
    R-Free Error 0.016
    Percent Reflections(Observed) 86.7
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    c_scangle_it 0.78
    c_scbond_it 0.49
    c_mcangle_it 0.87
    c_mcbond_it 0.47
    c_improper_angle_d 0.77
    c_bond_d 0.006
    c_angle_deg 1.4
    c_dihedral_angle_d 27.0
     
    Coordinate Error
    Luzzati ESD(Observed) 0.25
    Luzzati Sigma A(Observed) 0.14
    Luzzati Resolution Cutoff(Low) 5.0
    Luzzati ESD(R-Free Set) 0.29
    Luzzati Sigma A(R-Free Set) 0.16
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 3431
    Nucleic Acid Atoms 0
    Heterogen Atoms 0
    Solvent Atoms 357
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) DENZO
    Data Reduction (data scaling) SCALEPACK
    Structure Solution AMORE
    Structure Refinement CNS 0.4
     
    Software
    refinement CNS version: 0.4
    model building AMORE
    data reduction SCALEPACK
    data collection DENZO