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X-RAY DIFFRACTION
Materials and Methods page
1HZH
  •   Crystallization Hide
    Crystallization Experiments
    Method VAPOR DIFFUSION, SITTING DROP
    pH 6.5
    Temperature 295.5
    Details NH4SO4, cacodylate, pH 6.5, VAPOR DIFFUSION, SITTING DROP, temperature 295.5K
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 271.32 α = 90
    b = 271.32 β = 90
    c = 175.18 γ = 120
     
    Space Group
    Space Group Name:    H 3 2
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 96
     
    Diffraction Detector
    Detector IMAGE PLATE
    Type MARRESEARCH
    Details 58 cm long, Pt-coated, fused silica, vertical focus
    Collection Date 1999-01-18
     
    Diffraction Radiation
    Monochromator Cyclindrically bent triangular Si(111) asymmetric cut, horizontal focus
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source SYNCHROTRON
    Type SSRL BEAMLINE BL7-1
    Wavelength 1.08
    Site SSRL
    Beamline BL7-1
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma(I) -2.0
    Resolution(High) 2.7
    Resolution(Low) 29.65
    Number Reflections(Observed) 187712
    Percent Possible(Observed) 94.4
    B(Isotropic) From Wilson Plot 65.9
    Redundancy 2.9
     
    High Resolution Shell Details
    Resolution(High) 2.7
    Resolution(Low) 2.75
    Percent Possible(All) 95.5
    Mean I Over Sigma(Observed) 2.4
    R-Sym I(Observed) 0.626
    Redundancy 2.7
    Number Unique Reflections(All) 3113
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method MOLECULAR REPLACEMENT
    reflnsShellList 2.7
    Resolution(Low) 29.65
    Cut-off Sigma(F) 0.0
    Number of Reflections(Observed) 61865
    Number of Reflections(R-Free) 6302
    Percent Reflections(Observed) 91.7
    R-Factor(Observed) 0.229
    R-Work 0.229
    R-Free 0.273
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Isotropic Thermal Model RESTRAINED
    Mean Isotropic B Value 90.1
    Anisotropic B[1][1] 1.47
    Anisotropic B[1][2] 7.87
    Anisotropic B[1][3] 0.0
    Anisotropic B[2][2] 1.47
    Anisotropic B[2][3] 0.0
    Anisotropic B[3][3] -2.94
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 2.7
    Shell Resolution(Low) 2.87
    Number of Reflections(R-Free) 1013
    Number of Reflections(R-Work) 8615
    R-Factor(R-Work) 0.352
    R-Factor(R-Free) 0.381
    R-Free Error 0.012
    Percent Reflections(Observed) 86.3
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    c_scangle_it 21.03
    c_scbond_it 15.11
    c_mcangle_it 17.19
    c_mcbond_it 11.25
    c_improper_angle_d 0.89
    c_bond_d 0.007
    c_angle_deg 1.3
    c_dihedral_angle_d 26.0
     
    Coordinate Error
    Luzzati ESD(Observed) 0.38
    Luzzati Sigma A(Observed) 0.56
    Luzzati Resolution Cutoff(Low) 5.0
    Luzzati ESD(R-Free Set) 0.45
    Luzzati Sigma A(R-Free Set) 0.61
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 10355
    Nucleic Acid Atoms 0
    Heterogen Atoms 221
    Solvent Atoms 71
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) DENZO
    Data Reduction (data scaling) SCALEPACK
    Structure Solution AMORE
    Structure Refinement CNS 0.9
     
    Software
    refinement CNS version: 0.9
    model building AMORE
    data reduction SCALEPACK
    data collection DENZO