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An Information Portal to 105339 Biological Macromolecular Structures

X-RAY DIFFRACTION
Materials and Methods page
1KE7
  •   Crystallization Hide
    Crystallization Experiments
    Method VAPOR DIFFUSION, HANGING DROP
    pH 7.5
    Temperature 22.0
    Details 10% PEG3340, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 22K
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 72.76 α = 90
    b = 73.78 β = 90
    c = 54 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 RIGAKU RAXIS II
    Details mirrors
    Collection Date 1998-02-20
     
    Diffraction Radiation
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source ROTATING ANODE
    Type RIGAKU RU300
    Wavelength 1.5418
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma (F) 2.0
    Observed Criterion Sigma(I) 2.0
    Resolution(High) 2
    Resolution(Low) 18
    Number Reflections(All) 20251
    Number Reflections(Observed) 19360
    Percent Possible(Observed) 95.6
    R Merge I(Observed) 0.042
    Redundancy 5.0
     
    High Resolution Shell Details
    Resolution(High) 2.0
    Resolution(Low) 2.1
    Percent Possible(All) 90.8
    R Merge I(Observed) 0.22
    Mean I Over Sigma(Observed) 3.5
    Redundancy 4.5
    Number Unique Reflections(All) 2449
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method MOLECULAR REPLACEMENT
    reflnsShellList 2.0
    Resolution(Low) 18.0
    Cut-off Sigma(I) 2.0
    Cut-off Sigma(F) 2.0
    Number of Reflections(all) 20251
    Number of Reflections(Observed) 19360
    Number of Reflections(R-Free) 1928
    Percent Reflections(Observed) 95.6
    R-Work 0.191
    R-Free 0.235
    R-Free Selection Details random
     
    Temperature Factor Modeling
    Data Not Available
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 2.0
    Shell Resolution(Low) 2.1
    Number of Reflections(Observed) 2722
    Number of Reflections(R-Free) 306
    R-Factor(R-Work) 0.235
    R-Factor(R-Free) 0.268
    R-Free Error 0.015
    Percent Reflections(Observed) 90.8
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    c_improper_angle_d 1.12
    c_dihedral_angle_d 22.3
    c_angle_d 1.3
    c_bond_d 0.009
     
    Coordinate Error
    Luzzati ESD(Observed) 0.22
    Luzzati Sigma A(Observed) 0.19
    Luzzati Resolution Cutoff(Low) 5.0
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 2253
    Nucleic Acid Atoms 0
    Heterogen Atoms 28
    Solvent Atoms 107
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) DENZO
    Data Reduction (data scaling) SCALEPACK
    Structure Solution X-PLOR
    Structure Refinement X-PLOR 3.1
     
    Software
    refinement X-PLOR version: 3.1
    model building X-PLOR