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X-RAY DIFFRACTION
Materials and Methods page
1XCK
  •   Crystallization Hide
    Crystallization Experiments
    Method VAPOR DIFFUSION, SITTING DROP
    pH 7.5
    Temperature 291.0
    Details PEG 4000, ammonium sulphate, hepes, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 291K
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 262.8 α = 90
    b = 283.6 β = 90
    c = 135.72 γ = 90
     
    Space Group
    Space Group Name:    P 21 21 21
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 90
     
    Diffraction Detector
    Detector CCD
    Type MARRESEARCH
    Collection Date 1998-07-25
     
    Diffraction Radiation
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source SYNCHROTRON
    Type MPG/DESY, HAMBURG BEAMLINE BW6
    Wavelength List 1.072
    Site MPG/DESY, HAMBURG
    Beamline BW6
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma (F) -3.0
    Observed Criterion Sigma(I) 0.0
    Resolution(High) 2.92
    Resolution(Low) 33.71
    Number Reflections(All) 374890
    Number Reflections(Observed) 184155
    Percent Possible(Observed) 83.8
    Redundancy 1.7
     
    High Resolution Shell Details
    Resolution(High) 2.92
    Resolution(Low) 3.0
    Percent Possible(All) 27.4
    Mean I Over Sigma(Observed) 1.5
    R-Sym I(Observed) 0.158
    Redundancy 0.4
    Number Unique Reflections(All) 4965
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method MOLECULAR REPLACEMENT
    reflnsShellList 2.92
    Resolution(Low) 33.71
    Cut-off Sigma(F) 0.0
    Number of Reflections(all) 184155
    Number of Reflections(Observed) 184155
    Number of Reflections(R-Free) 18290
    Percent Reflections(Observed) 83.8
    R-Factor(Observed) 0.203
    R-Work 0.203
    R-Free 0.235
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Isotropic Thermal Model Restrained
    Mean Isotropic B Value 48.9
    Anisotropic B[1][1] -15.57
    Anisotropic B[1][2] 22.43
    Anisotropic B[1][3] -6.87
    Anisotropic B[2][2] 0.0
    Anisotropic B[2][3] 0.0
    Anisotropic B[3][3] 0.0
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 2.9
    Shell Resolution(Low) 3.08
    Number of Reflections(Observed) 11885
    Number of Reflections(R-Free) 1302
    R-Factor(R-Work) 0.327
    R-Factor(R-Free) 0.354
    R-Free Error 0.01
    Percent Reflections(Observed) 35.6
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    c_improper_angle_d 0.77
    c_dihedral_angle_d 20.8
    c_angle_deg 1.3
    c_bond_d 0.008
     
    Coordinate Error
    Luzzati ESD(Observed) 0.35
    Luzzati Sigma A(Observed) 0.47
    Luzzati Resolution Cutoff(Low) 5.0
    Luzzati ESD(R-Free Set) 0.41
    Luzzati Sigma A(R-Free Set) 0.54
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 53970
    Nucleic Acid Atoms 0
    Heterogen Atoms 484
    Solvent Atoms 847
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) DENZO
    Data Reduction (data scaling) SCALEPACK
    Structure Solution AMORE
    Structure Refinement CNS 1.1
     
    Software
    refinement CNS version: 1.1
    model building AMoRE
    data reduction SCALEPACK
    data collection DENZO