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X-RAY DIFFRACTION
Materials and Methods page
1QK2
  •   Crystallization Hide
    Crystallization Experiments
    pH 6
    Details 20% PEG6000, 20MM MES BUFFER PH6.0, 10MM COCL2., pH 6.00
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 48.83 α = 90
    b = 74.7 β = 104.12
    c = 91.84 γ = 90
     
    Space Group
    Space Group Name:    P 1 21 1
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 100
     
    Diffraction Detector
    Detector IMAGE PLATE
    Type RIGAKU
    Details MIRRORS
    Collection Date 1996-06-10
     
    Diffraction Radiation
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source ROTATING ANODE
    Type RIGAKU
    Wavelength 1.5418
     
     
  •   Refinement Data Hide
    Reflection Details
    Resolution(High) 2
    Resolution(Low) 39.8
    Number Reflections(Observed) 41716
    Percent Possible(Observed) 94.9
    R Merge I(Observed) 0.069
    B(Isotropic) From Wilson Plot 17.1
    Redundancy 2.9
     
    High Resolution Shell Details
    Resolution(High) 2.0
    Resolution(Low) 2.07
    Percent Possible(All) 79.2
    R Merge I(Observed) 0.266
    Mean I Over Sigma(Observed) 3.8
    Redundancy 2.5
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method OTHER
    reflnsShellList 2.0
    Resolution(Low) 20.0
    Cut-off Sigma(F) 0.0
    Number of Reflections(Observed) 41476
    Number of Reflections(R-Free) 1278
    Percent Reflections(Observed) 95.6
    R-Factor(Observed) 0.189
    R-Work 0.189
    R-Free 0.222
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Isotropic Thermal Model RESTRAINED
    Mean Isotropic B Value 17.5
    Anisotropic B[1][1] -1.33
    Anisotropic B[1][2] 0.0
    Anisotropic B[1][3] 1.08
    Anisotropic B[2][2] -1.71
    Anisotropic B[2][3] 0.0
    Anisotropic B[3][3] 3.04
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 2.0
    Shell Resolution(Low) 2.13
    Number of Reflections(R-Free) 182
    Number of Reflections(R-Work) 6323
    R-Factor(R-Work) 0.229
    R-Factor(R-Free) 0.276
    R-Free Error 0.02
    Percent Reflections(Observed) 89.9
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    c_scangle_it 1.58
    c_scbond_it 1.06
    c_mcangle_it 1.21
    c_mcbond_it 0.73
    c_improper_angle_d 0.78
    c_bond_d 0.005
    c_angle_deg 1.3
    c_dihedral_angle_d 22.7
     
    Coordinate Error
    Luzzati ESD(Observed) 0.21
    Luzzati Sigma A(Observed) 0.16
    Luzzati Resolution Cutoff(Low) 20.0
    Luzzati ESD(R-Free Set) 0.26
    Luzzati Sigma A(R-Free Set) 0.23
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 5494
    Nucleic Acid Atoms 0
    Heterogen Atoms 302
    Solvent Atoms 545
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) DENZO
    Data Reduction (data scaling) SCALEPACK
    Structure Solution CNS 0.5
    Structure Refinement CNS 0.5
     
    Software
    refinement CNS version: 0.5
    model building CNS version: 0.5