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X-RAY DIFFRACTION
Materials and Methods page
1XKK
  •   Crystallization Hide
    Crystallization Experiments
    Method VAPOR DIFFUSION, HANGING DROP
    pH 9
    Temperature 293.0
    Details 100 mM CAPS, 200 mM LiSO4, 2M NaKPO4, pH 9, VAPOR DIFFUSION, HANGING DROP, temperature 293K
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 45.65 α = 90
    b = 67.14 β = 90
    c = 102.88 γ = 90
     
    Space Group
    Space Group Name:    P 21 21 21
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 93
     
    Diffraction Detector
    Detector CCD
    Type ADSC QUANTUM 4
    Collection Date 2003-07-01
     
    Diffraction Radiation
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source SYNCHROTRON
    Type APS BEAMLINE 17-ID
    Wavelength List 1.00
    Site APS
    Beamline 17-ID
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma (F) 2.0
    Observed Criterion Sigma(I) 2.0
    Resolution(High) 2.4
    Resolution(Low) 35.44
    Number Reflections(All) 13337
    Number Reflections(Observed) 12199
    Percent Possible(Observed) 94.6
    R Merge I(Observed) 0.067
    Redundancy 4.6
     
    High Resolution Shell Details
    Resolution(High) 2.4
    Resolution(Low) 2.55
    Percent Possible(All) 93.1
    R Merge I(Observed) 0.19
    Mean I Over Sigma(Observed) 6.6
    Redundancy 4.8
    Number Unique Reflections(All) 1737
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method MOLECULAR REPLACEMENT
    reflnsShellList 2.4
    Resolution(Low) 35.44
    Cut-off Sigma(I) 0.0
    Cut-off Sigma(F) 0.0
    Number of Reflections(all) 13337
    Number of Reflections(Observed) 12199
    Number of Reflections(R-Free) 1240
    Percent Reflections(Observed) 94.6
    R-Work 0.209
    R-Free 0.255
    R-Free Selection Details random
     
    Temperature Factor Modeling
    Data Not Available
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 2.4
    Shell Resolution(Low) 2.55
    Number of Reflections(Observed) 1737
    Number of Reflections(R-Free) 198
    R-Factor(R-Work) 0.24
    R-Factor(R-Free) 0.316
    R-Free Error 0.022
    Percent Reflections(Observed) 93.1
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    c_improper_angle_d 0.74
    c_dihedral_angle_d 21.9
    c_angle_d 1.4
    c_bond_d 0.008
     
    Coordinate Error
    Luzzati ESD(Observed) 0.35
    Luzzati Sigma A(Observed) 0.2
    Luzzati Resolution Cutoff(Low) 5.0
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 2249
    Nucleic Acid Atoms 0
    Heterogen Atoms 50
    Solvent Atoms 77
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) HKL-2000
    Data Reduction (data scaling) SCALEPACK
    Structure Solution CNS
    Structure Refinement CNS
     
    Software
    refinement CNS
    model building CNS
    data reduction SCALEPACK
    data collection HKL-2000