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X-RAY DIFFRACTION
Materials and Methods page
3MKW
  •   Crystallization Hide
    Crystallization Experiments
    Method VAPOR DIFFUSION, HANGING DROP
    pH 8
    Temperature 298.0
    Details 25.5% PEG 4000, 0.17 M lithium sulphate, 0.1 M Tris pH 8.0, 15% glycerol, VAPOR DIFFUSION, HANGING DROP, temperature 298K
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 200.46 α = 90
    b = 200.46 β = 90
    c = 200.46 γ = 90
     
    Space Group
    Space Group Name:    I 2 3
     
     
  •   Diffraction Hide
    Diffraction Detector
    Detector CCD
    Type ADSC QUANTUM 4r
    Details mirrors
    Collection Date 2008-10-12
     
    Diffraction Radiation
    Monochromator graphite
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source SYNCHROTRON
    Type ALS BEAMLINE 8.3.1
    Wavelength List 1.03
    Site ALS
    Beamline 8.3.1
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma (F) 0.0
    Observed Criterion Sigma(I) 0.0
    Resolution(High) 2.99
    Resolution(Low) 100
    Number Reflections(All) 26809
    Number Reflections(Observed) 26809
    Percent Possible(Observed) 100.0
    R Merge I(Observed) 0.05
    B(Isotropic) From Wilson Plot 0.2
    Redundancy 5.0
     
    High Resolution Shell Details
    Resolution(High) 2.99
    Resolution(Low) 3.1
    Percent Possible(All) 99.0
    R Merge I(Observed) 0.448
    Mean I Over Sigma(Observed) 2.0
    R-Sym I(Observed) 0.448
    Redundancy 4.0
    Number Unique Reflections(All) 2800
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method MOLECULAR REPLACEMENT
    reflnsShellList 2.99
    Resolution(Low) 100.23
    Cut-off Sigma(I) 0.0
    Cut-off Sigma(F) 0.0
    Number of Reflections(all) 26800
    Number of Reflections(Observed) 26808
    Number of Reflections(R-Free) 2666
    Percent Reflections(Observed) 98.5
    R-Factor(All) 0.234
    R-Factor(Observed) 0.233
    R-Work 0.233
    R-Free 0.268
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Isotropic Thermal Model RESTRAINED
    Mean Isotropic B Value 71.6
    Anisotropic B[1][1] 0.0
    Anisotropic B[1][2] 0.0
    Anisotropic B[1][3] 0.0
    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) 2.99
    Shell Resolution(Low) 3.18
    Number of Reflections(R-Free) 480
    Number of Reflections(R-Work) 3982
    R-Factor(R-Work) 0.443
    R-Factor(R-Free) 0.417
    R-Free Error 0.019
    Percent Reflections(Observed) 99.6
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    c_scangle_it 6.06
    c_scbond_it 3.92
    c_mcangle_it 3.49
    c_mcbond_it 1.99
    c_improper_angle_d 1.04
    c_dihedral_angle_d 17.4
    c_angle_deg 1.1
    c_bond_d 0.006
     
    Coordinate Error
    Luzzati ESD(Observed) 0.45
    Luzzati Sigma A(Observed) 0.49
    Luzzati Resolution Cutoff(Low) 5.0
    Luzzati ESD(R-Free Set) 0.43
    Luzzati Sigma A(R-Free Set) 0.53
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 1754
    Nucleic Acid Atoms 731
    Heterogen Atoms 45
    Solvent Atoms 0
     
     
  •   Software and Computing Hide
    Computing
    Data Collection ADSC Quantum
    Data Reduction (intensity integration) MOSFLM
    Data Reduction (data scaling) SCALA
    Structure Solution molrep
    Structure Refinement CNS 1.2
     
    Software
    refinement CNS version: 1.2
    model building molrep
    data collection ADSC version: Quantum