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X-RAY DIFFRACTION
Materials and Methods page
1IEP
  •   Crystallization Hide
    Crystallization Experiments
    Method VAPOR DIFFUSION, HANGING DROP
    pH 6.5
    Temperature 277.0
    Details PEG 4000, MAGNESIUM CHLORIDE, MES, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 112.89 α = 90
    b = 147.37 β = 90
    c = 153.44 γ = 90
     
    Space Group
    Space Group Name:    F 2 2 2
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 103
     
    Diffraction Detector
    Detector CCD
    Type ADSC QUANTUM 4
    Collection Date 2001-01-30
     
    Diffraction Radiation
    Monochromator Si
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source SYNCHROTRON
    Type CHESS BEAMLINE F1
    Wavelength List 0.949
    Site CHESS
    Beamline F1
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma (F) 0.0
    Observed Criterion Sigma(I) 0.0
    Resolution(High) 2.1
    Resolution(Low) 29.14
    Number Reflections(All) 37004
    Number Reflections(Observed) 37004
    Percent Possible(Observed) 99.0
    B(Isotropic) From Wilson Plot 28.0
    Redundancy 5.3
     
    High Resolution Shell Details
    Resolution(High) 2.1
    Resolution(Low) 2.18
    Percent Possible(All) 97.1
    Mean I Over Sigma(Observed) 4.2
    R-Sym I(Observed) 0.27
    Redundancy 4.5
    Number Unique Reflections(All) 3585
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method FOURIER SYNTHESIS
    reflnsShellList 2.1
    Resolution(Low) 29.14
    Cut-off Sigma(F) 0.0
    Number of Reflections(all) 35704
    Number of Reflections(Observed) 35704
    Number of Reflections(R-Free) 2917
    Percent Reflections(Observed) 95.6
    R-Work 0.231
    R-Free 0.262
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Isotropic Thermal Model RESTRAINED
    Mean Isotropic B Value 55.1
    Anisotropic B[1][1] 20.66
    Anisotropic B[1][2] 0.0
    Anisotropic B[1][3] 0.0
    Anisotropic B[2][2] -6.98
    Anisotropic B[2][3] 0.0
    Anisotropic B[3][3] -13.67
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 2.1
    Shell Resolution(Low) 2.23
    Number of Reflections(R-Free) 452
    Number of Reflections(R-Work) 4978
    R-Factor(R-Work) 0.333
    R-Factor(R-Free) 0.393
    R-Free Error 0.018
    Percent Reflections(Observed) 88.6
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    c_scangle_it 4.69
    c_scbond_it 3.23
    c_mcangle_it 3.53
    c_mcbond_it 2.27
    c_improper_angle_d 0.69
    c_bond_d 0.005
    c_angle_deg 1.2
    c_dihedral_angle_d 21.3
     
    Coordinate Error
    Luzzati ESD(Observed) 0.3
    Luzzati Sigma A(Observed) 0.33
    Luzzati Resolution Cutoff(Low) 5.0
    Luzzati ESD(R-Free Set) 0.36
    Luzzati Sigma A(R-Free Set) 0.43
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 4458
    Nucleic Acid Atoms 0
    Heterogen Atoms 80
    Solvent Atoms 172
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) DENZO
    Data Reduction (data scaling) SCALEPACK
    Structure Solution CNS
    Structure Refinement CNS 1.0
     
    Software
    refinement CNS version: 1.0
    model building CNS
    data reduction SCALEPACK
    data collection DENZO