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X-RAY DIFFRACTION
Materials and Methods page
2TRY
  •   Crystallization Hide
    Crystallization Experiments
    pH 6.5
    Details PURIFIED PROTEIN (25MG/ML IN 100MM TRIS BUFFER, PH 7.5) WAS CRYSTALLIZED FROM 1.5M AMMONIUM SULFATE, 100MM CITRATE BUFFER, PH 5.5, AT ROOM TEMPERATURE., pH 6.5
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 43.67 α = 90
    b = 86.37 β = 90
    c = 64.94 γ = 90
     
    Space Group
    Space Group Name:    P 21 21 2
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 296
     
    Diffraction Detector
    Detector IMAGE PLATE
    Type RIGAKU
    Details COLLIMATOR
    Collection Date 1995-12
     
    Diffraction Radiation
    Monochromator GRAPHITE(002)
     
    Diffraction Source
    Source ROTATING ANODE
    Type RIGAKU RUH2R
    Wavelength 1.5418
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma(I) 1.0
    Resolution(High) 1.8
    Resolution(Low) 64.9
    Number Reflections(Observed) 17581
    Percent Possible(Observed) 74.9
    R Merge I(Observed) 0.107
    B(Isotropic) From Wilson Plot 11.1
    Redundancy 2.2
     
    High Resolution Shell Details
    Resolution(High) 1.8
    Resolution(Low) 2.0
    Percent Possible(All) 56.0
    R Merge I(Observed) 0.27
    Mean I Over Sigma(Observed) 1.8
    R-Sym I(Observed) 0.22
    Redundancy 1.5
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method MOLECULAR REPLACEMENT
    reflnsShellList 2.0
    Resolution(Low) 5.0
    Cut-off Sigma(F) 2.0
    Number of Reflections(Observed) 12667
    Number of Reflections(R-Free) 846
    Percent Reflections(Observed) 79.1
    R-Factor(Observed) 0.213
    R-Work 0.213
    R-Free 0.31
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Mean Isotropic B Value 19.8
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 2.0
    Shell Resolution(Low) 2.08
    Number of Reflections(R-Free) 58
    Number of Reflections(R-Work) 1202
    R-Factor(R-Work) 0.31
    R-Factor(R-Free) 0.365
    R-Free Error 0.048
    Percent Reflections(Observed) 63.83
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    x_scangle_it 1.58
    x_scbond_it 1.41
    x_mcangle_it 1.41
    x_mcbond_it 1.22
    x_improper_angle_d 1.6
    x_bond_d 0.012
    x_angle_deg 1.9
    x_dihedral_angle_d 25.7
     
    Coordinate Error
    Luzzati ESD(Observed) 0.27
    Luzzati Sigma A(Observed) 0.39
    Luzzati Resolution Cutoff(Low) 5.0
    Luzzati ESD(R-Free Set) 0.36
    Luzzati Sigma A(R-Free Set) 0.4
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 1956
    Nucleic Acid Atoms 0
    Heterogen Atoms 0
    Solvent Atoms 52
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) BIOTEX
    Data Reduction (data scaling) BIOTEX
    Structure Solution X-PLOR 3.1
    Structure Refinement X-PLOR 3.1
     
    Software
    refinement X-PLOR version: 3.1
    model building X-PLOR version: 3.1