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X-RAY DIFFRACTION
Materials and Methods page
4MEG
  •   Crystallization Hide
    Crystallization Experiments
    Method VAPOR DIFFUSION, HANGING DROP
    pH 6.5
    Temperature 294.0
    Details 5% PEG 8000, 0.5M lithium chloride, 25mM magnesium acetate, 25mM magnesium chloride, 0.5mM spermine, 25mM cacodylate, 25mM HEPES, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 294K
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 166.9 α = 90
    b = 40.4 β = 90
    c = 73.6 γ = 90
     
    Space Group
    Space Group Name:    P 21 21 2
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 100
     
    Diffraction Detector
    Detector CCD
    Type ADSC QUANTUM 315r
    Collection Date 2011-11-28
     
    Diffraction Radiation
    Monochromator double crystal si
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source SYNCHROTRON
    Type ALS BEAMLINE 5.0.2
    Wavelength List 0.9774
    Site ALS
    Beamline 5.0.2
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma (F) 0.0
    Observed Criterion Sigma(I) 3.0
    Resolution(High) 3.1
    Resolution(Low) 30
    Number Reflections(All) 9402
    Percent Possible(Observed) 98.2
    R Merge I(Observed) 0.9
    Redundancy 8.0
     
    High Resolution Shell Details
    Resolution(High) 3.1
    Resolution(Low) 3.15
    Percent Possible(All) 85.0
    R Merge I(Observed) 0.732
    Mean I Over Sigma(Observed) 3.0
    Redundancy 6.5
    Number Unique Reflections(All) 314
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method MOLECULAR REPLACEMENT
    reflnsShellList 3.1
    Resolution(Low) 29.88
    Cut-off Sigma(F) 0.0
    Number of Reflections(all) 8775
    Number of Reflections(Observed) 8775
    Number of Reflections(R-Free) 918
    Percent Reflections(Observed) 91.6
    R-Factor(All) 0.197
    R-Factor(Observed) 0.197
    R-Work 0.197
    R-Free 0.252
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Isotropic Thermal Model RESTRAINED
    Mean Isotropic B Value 79.1
    Anisotropic B[1][1] -19.3
    Anisotropic B[1][2] 0.0
    Anisotropic B[1][3] 0.0
    Anisotropic B[2][2] -2.58
    Anisotropic B[2][3] 0.0
    Anisotropic B[3][3] 21.88
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 3.1
    Shell Resolution(Low) 3.29
    Number of Reflections(R-Free) 119
    Number of Reflections(R-Work) 1039
    R-Factor(R-Work) 0.282
    R-Factor(R-Free) 0.319
    R-Free Error 0.029
    Percent Reflections(Observed) 75.8
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    c_improper_angle_d 1.68
    c_bond_d 0.005
    c_angle_deg 1.2
    c_dihedral_angle_d 17.3
     
    Coordinate Error
    Luzzati ESD(Observed) 0.34
    Luzzati Sigma A(Observed) 0.45
    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 0
    Nucleic Acid Atoms 2943
    Heterogen Atoms 16
    Solvent Atoms 1
     
     
  •   Software and Computing Hide
    Computing
    Data Collection HKL-2000
    Data Reduction (intensity integration) HKL-2000
    Data Reduction (data scaling) HKL-2000
    Structure Solution Phaser
    Structure Refinement CNS 1.2
     
    Software
    refinement CNS version: 1.2
    model building Phaser
    data collection HKL-2000