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X-RAY DIFFRACTION
Materials and Methods page
1NBM
  •   Crystallization Hide
    Crystallization Experiments
    pH 7.5
    Details 50MM TRIS-HCL, PH7.5, 200MM SODIUM CHLORIDE, 20MM MAGNESIUM SULPHATE, 1MM EDTA, 0.002% (W/V) PHENYL METHYLSULPHONYL FLUORIDE, 0.02%(W/V) SODIUM AZIDE, 10.5% (W/V) PEG MME 5000, 250UM AMP-PNP AND 5UM ADP.
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 281 α = 90
    b = 106.6 β = 90
    c = 138.8 γ = 90
     
    Space Group
    Space Group Name:    P 21 21 21
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 100
     
    Diffraction Detector
    Detector IMAGE PLATE
    Type MARRESEARCH
    Collection Date 1997-05-12
     
    Diffraction Radiation
     
    Diffraction Source
    Source SYNCHROTRON
    Type SRS BEAMLINE PX9.6
    Wavelength 0.87
    Site SRS
    Beamline PX9.6
     
     
  •   Refinement Data Hide
    Reflection Details
    Resolution(High) 3
    Resolution(Low) 20
    Number Reflections(Observed) 70240
    Percent Possible(Observed) 97.2
    R Merge I(Observed) 0.088
    B(Isotropic) From Wilson Plot 54.48
    Redundancy 2.5
     
    High Resolution Shell Details
    Resolution(High) 3.0
    Resolution(Low) 3.16
    Percent Possible(All) 98.0
    R Merge I(Observed) 0.304
    Mean I Over Sigma(Observed) 3.4
    Redundancy 2.5
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method MOLECULAR REPLACEMENT
    reflnsShellList 3.0
    Resolution(Low) 6.0
    Cut-off Sigma(F) 2.0
    Number of Reflections(Observed) 66714
    Number of Reflections(R-Free) 3434
    Percent Reflections(Observed) 90.01
    R-Factor(Observed) 0.207
    R-Work 0.207
    R-Free 0.297
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Isotropic Thermal Model INDIVIDUAL
    Mean Isotropic B Value 52.67
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 3.12
    Shell Resolution(Low) 3.0
    Number of Reflections(R-Free) 316
    Number of Reflections(R-Work) 6154
    R-Factor(R-Work) 0.293
    R-Factor(R-Free) 0.367
    Percent Reflections(Observed) 89.23
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    x_scangle_it 2.5
    x_scbond_it 2.0
    x_mcangle_it 2.0
    x_mcbond_it 1.5
    x_improper_angle_d 0.95
    x_bond_d 0.005
    x_angle_deg 0.994
    x_dihedral_angle_d 22.17
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 22732
    Nucleic Acid Atoms 0
    Heterogen Atoms 161
    Solvent Atoms 164
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) MOSFLM
    Data Reduction (data scaling) CCP4 (SCALA)
    Structure Solution CCP4
    Structure Refinement X-PLOR 3.1
     
    Software
    refinement X-PLOR version: 3.1
    model building CCP4