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X-RAY DIFFRACTION
Materials and Methods page
1A1Q
  •   Crystallization Hide
    Crystallization Experiments
    pH 6.5
    Details VAPOR DIFFUSION. PROTEIN MIXED WITH WELL SOLUTION OF: 3.5M NACL, 150MM TRIS-HCL (PH 6.0), 5% PEG400., pH 6.5
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 133 α = 90
    b = 133 β = 90
    c = 223 γ = 120
     
    Space Group
    Space Group Name:    H 3 2
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 100
     
    Diffraction Detector
    Detector IMAGE PLATE
    Type MARRESEARCH
    Details MIRRORS
    Collection Date 1995-11
     
    Diffraction Radiation
     
    Diffraction Source
    Source SYNCHROTRON
    Type ESRF BEAMLINE ID14-3
    Wavelength 0.995
    Site ESRF
    Beamline ID14-3
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma(I) 0.0
    Resolution(High) 2.4
    Resolution(Low) 20
    Number Reflections(Observed) 30000
    Percent Possible(Observed) 98.0
    B(Isotropic) From Wilson Plot 20.0
    Redundancy 3.0
     
    High Resolution Shell Details
    Resolution(High) 2.4
    Resolution(Low) 2.5
    Percent Possible(All) 98.0
    Mean I Over Sigma(Observed) 4.0
    R-Sym I(Observed) 0.29
    Redundancy 3.0
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method HEAVY ATOMS: ISOMORPHOUS + ANOMALOUS SIGNALS
    reflnsShellList 2.4
    Resolution(Low) 8.0
    Cut-off Sigma(F) 2.0
    Number of Reflections(Observed) 25000
    Number of Reflections(R-Free) 2000
    Percent Reflections(Observed) 98.0
    R-Factor(Observed) 0.225
    R-Work 0.225
    R-Free 0.32
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Isotropic Thermal Model RESTRAINED
    Mean Isotropic B Value 17.0
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 2.4
    Shell Resolution(Low) 2.5
    Number of Reflections(R-Free) 200
    Number of Reflections(R-Work) 2000
    R-Factor(R-Work) 0.28
    R-Factor(R-Free) 0.38
    R-Free Error 0.04
    Percent Reflections(Observed) 98.0
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    x_scangle_it 5.0
    x_scbond_it 5.0
    x_mcangle_it 5.0
    x_mcbond_it 5.0
    x_improper_angle_d 2.0
    x_bond_d 0.02
    x_angle_deg 2.1
    x_dihedral_angle_d 28.0
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 531
    Nucleic Acid Atoms 0
    Heterogen Atoms 3
    Solvent Atoms 0
     
     
  •   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