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X-RAY DIFFRACTION
Materials and Methods page
1QAB
  •   Crystallization Hide
    Crystallization Experiments
    Method VAPOR DIFFUSION, HANGING DROP
    pH 7.4
    Temperature 293.0
    Details pH 7.4, VAPOR DIFFUSION, HANGING DROP, temperature 293K
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 140.23 α = 90
    b = 140.23 β = 90
    c = 124.08 γ = 90
     
    Space Group
    Space Group Name:    P 41 21 2
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 100
     
    Diffraction Detector
    Detector CCD
    Type ADSC
    Collection Date 1996-05-15
     
    Diffraction Radiation
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source SYNCHROTRON
    Type CHESS BEAMLINE A1
    Wavelength 0.914
    Site CHESS
    Beamline A1
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma(I) 4.4
    Resolution(High) 3.2
    Number Reflections(Observed) 26640
    Percent Possible(Observed) 99.9
    R Merge I(Observed) 0.117
    B(Isotropic) From Wilson Plot 51.4
    Redundancy 12.4
     
     
  •   Refinement Hide
    Refinement Statistics
    reflnsShellList 3.2
    Resolution(Low) 6.2
    Cut-off Sigma(I) 2.0
    Number of Reflections(Observed) 11303
    Number of Reflections(R-Free) 508
    R-Work 0.278
    R-Free 0.403
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Isotropic Thermal Model OVERALL
    Mean Isotropic B Value 51.4
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 3.2
    Shell Resolution(Low) 3.32
    Number of Reflections(R-Free) 67
    Number of Reflections(R-Work) 1368
    R-Factor(R-Work) 0.325
    R-Factor(R-Free) 0.423
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    x_improper_angle_d 0.91
    x_bond_d 0.011
    x_angle_deg 1.8
    x_dihedral_angle_d 28.4
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 6412
    Nucleic Acid Atoms 0
    Heterogen Atoms 42
    Solvent Atoms 0
     
     
  •   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