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X-RAY DIFFRACTION
Materials and Methods page
2TRH
  •   Crystallization Hide
    Crystallization Experiments
    pH 6.5
    Details PURIFIED PROTEIN (20MG/ML IN 100MM TRIS BUFFER, PH 7.5) WAS CRYSTALLIZED FROM\\ 2.25M AMMONIUM SULFATE, 100MM CITRATE BUFFER, PH 5.5 AT ROOM TEMPERATURE.\\, pH 6.5
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 43.38 α = 90
    b = 86.34 β = 90
    c = 65.58 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 RAXIS IIC
    Details COLLIMATOR
    Collection Date 1995-06
     
    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) 52.22
    Number Reflections(Observed) 20855
    Percent Possible(Observed) 88.6
    R Merge I(Observed) 0.109
    B(Isotropic) From Wilson Plot 11.6
    Redundancy 4.3
     
    High Resolution Shell Details
    Resolution(High) 1.8
    Resolution(Low) 1.86
    Percent Possible(All) 74.7
    R Merge I(Observed) 0.27
    Mean I Over Sigma(Observed) 1.9
    R-Sym I(Observed) 0.22
    Redundancy 2.0
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method MOLECULAR REPLACEMENT
    reflnsShellList 1.9
    Resolution(Low) 5.0
    Cut-off Sigma(F) 2.0
    Number of Reflections(Observed) 16842
    Number of Reflections(R-Free) 1009
    Percent Reflections(Observed) 89.3
    R-Factor(Observed) 0.219
    R-Work 0.219
    R-Free 0.299
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Mean Isotropic B Value 22.6
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 1.9
    Shell Resolution(Low) 1.98
    Number of Reflections(R-Free) 96
    Number of Reflections(R-Work) 1827
    R-Factor(R-Work) 0.351
    R-Factor(R-Free) 0.395
    R-Free Error 0.04
    Percent Reflections(Observed) 78.08
     
    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 1.57
    x_bond_d 0.011
    x_angle_deg 1.87
    x_dihedral_angle_d 25.9
     
    Coordinate Error
    Luzzati ESD(Observed) 0.25
    Luzzati Sigma A(Observed) 0.34
    Luzzati Resolution Cutoff(Low) 5.0
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 1954
    Nucleic Acid Atoms 0
    Heterogen Atoms 0
    Solvent Atoms 71
     
     
  •   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