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X-RAY DIFFRACTION
Materials and Methods page
1QEX
  •   Crystallization Hide
    Crystallization Experiments
    pH 7.5
    Details 28% PEG-400 0.2M CACL2 HEPES-NA BUFFER, PH 7.5
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 94.33 α = 90
    b = 94.33 β = 90
    c = 440.94 γ = 120
     
    Space Group
    Space Group Name:    H 3 2
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 110
     
    Diffraction Detector
    Detector IMAGE PLATE
    Type RIGAKU
    Details MIRRORS
    Collection Date 1997-06
     
    Diffraction Radiation
    Monochromator NI FILTER
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source ROTATING ANODE
    Type RIGAKU RU200
    Wavelength 1.5418
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma(I) -2.0
    Resolution(High) 2.3
    Resolution(Low) 40
    Number Reflections(Observed) 33400
    Percent Possible(Observed) 97.5
    R Merge I(Observed) 0.071
    B(Isotropic) From Wilson Plot 31.7
    Redundancy 5.8
     
    High Resolution Shell Details
    Resolution(High) 2.3
    Resolution(Low) 2.4
    Percent Possible(All) 96.3
    R Merge I(Observed) 0.17
    Mean I Over Sigma(Observed) 5.0
    Redundancy 5.6
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method MIRAS
    reflnsShellList 2.3
    Resolution(Low) 20.0
    Cut-off Sigma(F) 2.0
    Number of Reflections(Observed) 33400
    Number of Reflections(R-Free) 1637
    Percent Reflections(Observed) 97.5
    R-Work 0.239
    R-Free 0.277
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Isotropic Thermal Model GROUP
    Mean Isotropic B Value 34.5
    Anisotropic B[1][1] 2.86
    Anisotropic B[1][2] 2.29
    Anisotropic B[1][3] 0.0
    Anisotropic B[2][2] 2.86
    Anisotropic B[2][3] 0.0
    Anisotropic B[3][3] -5.72
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 2.3
    Shell Resolution(Low) 2.4
    Number of Reflections(R-Free) 223
    Number of Reflections(R-Work) 3853
    R-Factor(R-Work) 0.28
    R-Factor(R-Free) 0.304
    R-Free Error 0.02
    Percent Reflections(Observed) 96.7
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    c_scangle_it 2.43
    c_scbond_it 1.67
    c_mcangle_it 2.22
    c_mcbond_it 1.27
    c_improper_angle_d 1.86
    c_bond_d 0.007
    c_angle_deg 1.3
    c_dihedral_angle_d 25.8
     
    Coordinate Error
    Luzzati ESD(Observed) 0.32
    Luzzati Sigma A(Observed) 0.22
    Luzzati Resolution Cutoff(Low) 20.0
    Luzzati ESD(R-Free Set) 0.38
    Luzzati Sigma A(R-Free Set) 0.25
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 4350
    Nucleic Acid Atoms 0
    Heterogen Atoms 30
    Solvent Atoms 292
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) DENZO
    Data Reduction (data scaling) SNP
    Structure Solution CCP4
    Structure Refinement CNS 0.5
     
    Software
    refinement CNS version: 0.5
    model building CCP4