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X-RAY DIFFRACTION
Materials and Methods page
1C3D
  •   Crystallization Hide
    Crystallization Experiments
    pH 6.5
    Details PROTEIN WAS CRYSTALLIZED FROM 12% PEG 20K, 100 MM MES BUFFER, PH 6.5, 10 MM DTT
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 60.82 α = 90
    b = 64.38 β = 90
    c = 87.16 γ = 90
     
    Space Group
    Space Group Name:    P 21 21 21
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 113
     
    Diffraction Detector
    Detector CCD
    Type PRINCETON 2K
    Details CRYSTALS
    Collection Date 1997-06
     
    Diffraction Radiation
    Monochromator SI(111)
     
    Diffraction Source
    Source SYNCHROTRON
    Type CHESS BEAMLINE F2
    Wavelength 0.993
    Site CHESS
    Beamline F2
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma(I) 2.0
    Resolution(High) 1.79
    Resolution(Low) 24.9
    Number Reflections(Observed) 29818
    Percent Possible(Observed) 80.4
    B(Isotropic) From Wilson Plot 20.3
    Redundancy 3.5
     
    High Resolution Shell Details
    Resolution(High) 1.79
    Resolution(Low) 1.83
    Percent Possible(All) 42.9
    Mean I Over Sigma(Observed) 2.7
    R-Sym I(Observed) 0.324
    Redundancy 2.0
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method MULTIWAVELENGTH ANOMALOUS DIFFRACTION
    reflnsShellList 1.8
    Resolution(Low) 5.0
    Cut-off Sigma(F) 2.0
    Number of Reflections(Observed) 24149
    Number of Reflections(R-Free) 1668
    Percent Reflections(Observed) 78.4
    R-Factor(Observed) 0.188
    R-Work 0.188
    R-Free 0.23
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Isotropic Thermal Model RESTRAINED
    Mean Isotropic B Value 29.8
    Anisotropic B[1][1] 0.85
    Anisotropic B[1][2] 0.0
    Anisotropic B[1][3] 0.0
    Anisotropic B[2][2] -4.71
    Anisotropic B[2][3] 0.0
    Anisotropic B[3][3] 3.86
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 1.8
    Shell Resolution(Low) 1.91
    Number of Reflections(R-Free) 129
    Number of Reflections(R-Work) 1829
    R-Factor(R-Work) 0.255
    R-Factor(R-Free) 0.269
    R-Free Error 0.024
    Percent Reflections(Observed) 38.7
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    x_scangle_it 18.62
    x_scbond_it 22.9
    x_mcangle_it 2.9
    x_mcbond_it 1.94
    x_improper_angle_d 1.24
    x_bond_d 0.008
    x_angle_deg 1.3
    x_dihedral_angle_d 20.8
     
    Coordinate Error
    Luzzati ESD(Observed) 0.2
    Luzzati Sigma A(Observed) 0.2
    Luzzati Resolution Cutoff(Low) 5.0
    Luzzati ESD(R-Free Set) 0.24
    Luzzati Sigma A(R-Free Set) 0.19
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 2317
    Nucleic Acid Atoms 0
    Heterogen Atoms 30
    Solvent Atoms 102
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) DENZO
    Data Reduction (data scaling) SCALEPACK
    Structure Solution PHASES, X-PLOR 3.1
    Structure Refinement X-PLOR 3.1
     
    Software
    refinement X-PLOR version: 3.1
    model building X-PLOR version: 3.1
    model building PHASES
    data reduction SCALEPACK
    data collection DENZO