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X-RAY DIFFRACTION
Materials and Methods page
4G63
  •   Crystallization Hide
    Crystallization Experiments
    Method VAPOR DIFFUSION, HANGING DROP
    pH 6.15
    Temperature 291.0
    Details Protein solution: 10 mM Tris (pH 7.5), 100 mM sodium chloride, and 5 mM DTT. Reservoir solution: 100 mM MES (pH 6.15), 20 % (w/v) PEG400, and 100 mM KBr, VAPOR DIFFUSION, HANGING DROP, temperature 291K
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 154.09 α = 90
    b = 154.09 β = 90
    c = 191.23 γ = 90
     
    Space Group
    Space Group Name:    I 41 2 2
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 100
     
    Diffraction Detector
    Detector CCD
    Type ADSC QUANTUM 315
    Details mirrors
    Collection Date 2011-10-17
     
    Diffraction Radiation
    Monochromator Si 111 CHANNEL
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source SYNCHROTRON
    Type NSLS BEAMLINE X25
    Wavelength List 0.979
    Site NSLS
    Beamline X25
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma (F) 0.0
    Observed Criterion Sigma(I) 0.0
    Resolution(High) 2.7
    Resolution(Low) 50
    Number Reflections(All) 31858
    Number Reflections(Observed) 31731
    Percent Possible(Observed) 99.6
    R Merge I(Observed) 0.079
    B(Isotropic) From Wilson Plot 60.1
    Redundancy 11.5
     
    High Resolution Shell Details
    Resolution(High) 2.7
    Resolution(Low) 2.8
    Percent Possible(All) 100.0
    R Merge I(Observed) 0.59
    Mean I Over Sigma(Observed) 6.12
    R-Sym I(Observed) 0.493
    Redundancy 12.1
    Number Unique Reflections(All) 3130
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method MOLECULAR REPLACEMENT
    reflnsShellList 2.7
    Resolution(Low) 20.0
    Cut-off Sigma(I) 2.0
    Cut-off Sigma(F) 2.0
    Number of Reflections(all) 31772
    Number of Reflections(Observed) 29199
    Number of Reflections(R-Free) 2920
    Percent Reflections(Observed) 91.9
    R-Factor(All) 0.225
    R-Factor(Observed) 0.222
    R-Work 0.222
    R-Free 0.258
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Isotropic Thermal Model RESTRAINED
    Mean Isotropic B Value 61.7
    Anisotropic B[1][1] 6.02
    Anisotropic B[1][2] 0.0
    Anisotropic B[1][3] 0.0
    Anisotropic B[2][2] 6.02
    Anisotropic B[2][3] 0.0
    Anisotropic B[3][3] -12.04
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 2.7
    Shell Resolution(Low) 2.87
    Number of Reflections(Observed) 3735
    Number of Reflections(R-Free) 411
    Number of Reflections(R-Work) 3735
    R-Factor(R-Work) 0.282
    R-Factor(R-Free) 0.322
    R-Free Error 0.016
    Percent Reflections(Observed) 79.5
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    c_improper_angle_d 0.75
    c_bond_d 0.007
    c_angle_deg 1.4
    c_dihedral_angle_d 22.6
     
    Coordinate Error
    Luzzati ESD(Observed) 0.34
    Luzzati Sigma A(Observed) 0.33
    Luzzati Resolution Cutoff(Low) 5.0
    Luzzati ESD(R-Free Set) 0.41
    Luzzati Sigma A(R-Free Set) 0.38
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 3725
    Nucleic Acid Atoms 0
    Heterogen Atoms 10
    Solvent Atoms 89
     
     
  •   Software and Computing Hide
    Computing
    Data Collection ADSC Quantum
    Data Reduction (intensity integration) HKL-2000
    Data Reduction (data scaling) HKL-2000
    Structure Solution COMO
    Structure Refinement CNS 1.3 & XtalView
     
    Software
    refinement CNS version: 1.3 & XtalView
    model building COMO
    data collection ADSC version: Quantum