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X-RAY DIFFRACTION
Materials and Methods page
1MEL
  •   Crystallization Hide
    Crystallization Experiments
    Method vapor diffusion - hanging drop
    pH 6.4
    Details HANGING DROP, pH 6.4, vapor diffusion - hanging drop
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 68.68 α = 90
    b = 69.71 β = 90
    c = 113.68 γ = 90
     
    Space Group
    Space Group Name:    P 21 21 21
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 298
     
    Diffraction Detector
    Detector AREA DETECTOR
    Type ENRAF-NONIUS FAST
    Details COLLIMATOR
    Collection Date 1996-05-02
     
    Diffraction Radiation
    Monochromator GRAPHITE(002)
     
    Diffraction Source
    Source ROTATING ANODE
    Type OTHER
    Wavelength 1.5418
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma(I) 0.0
    Resolution(High) 2.5
    Resolution(Low) 10
    Number Reflections(Observed) 17829
    Percent Possible(Observed) 93.4
    R Merge I(Observed) 0.114
    Redundancy 5.4
     
    High Resolution Shell Details
    Resolution(High) 2.5
    Resolution(Low) 2.56
    Percent Possible(All) 84.8
    R Merge I(Observed) 0.42
    Mean I Over Sigma(Observed) 1.8
    Redundancy 3.2
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method MOLECULAR REPLACEMENT
    reflnsShellList 2.5
    Resolution(Low) 10.0
    Cut-off Sigma(F) 0.0
    Number of Reflections(Observed) 17081
    Percent Reflections(Observed) 89.4
    R-Factor(Observed) 0.221
    R-Work 0.221
    R-Free 0.323
     
    Temperature Factor Modeling
    Mean Isotropic B Value 16.7
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    x_improper_angle_d 1.433
    x_bond_d 0.013
    x_angle_deg 1.8
    x_dihedral_angle_d 24.04
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 3908
    Nucleic Acid Atoms 0
    Heterogen Atoms 0
    Solvent Atoms 33
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) MADNES
    Data Reduction (data scaling) CCP4 (SCALA)
    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
    data reduction SCALA version: (CCP4)
    data collection MADNES