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An Information Portal to 109093 Biological Macromolecular Structures

X-RAY DIFFRACTION
Materials and Methods page
1KXK
  •   Crystallization Hide
    Crystallization Experiments
    Method VAPOR DIFFUSION, SITTING DROP
    pH 7
    Temperature 298.0
    Details HEPES-KOH, magnesium chloride, ammonium sulfate, spermine, pH 7.0, VAPOR DIFFUSION, SITTING DROP, temperature 298K
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 90.99 α = 90
    b = 90.99 β = 90
    c = 235.89 γ = 120
     
    Space Group
    Space Group Name:    P 61 2 2
     
     
  •   Diffraction Hide
    Diffraction Detector
    Detector CCD
    Type ADSC QUANTUM 4
    Collection Date 2001-04-22
    Detector CCD
    Type ADSC QUANTUM 4
    Collection Date 2001-04-22
     
    Diffraction Radiation
    Monochromator Si(111) or (220)
    Diffraction Protocol MAD
    Monochromator Si(111) or (220)
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source SYNCHROTRON
    Type NSLS BEAMLINE X25
    Wavelength List 0.92, 0.9194, 0.9273, 0.9020
    Site NSLS
    Beamline X25
    Source SYNCHROTRON
    Type NSLS BEAMLINE X25
    Wavelength List 1.1
    Site NSLS
    Beamline X25
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma (F) 2.0
    Observed Criterion Sigma(I) 2.0
    Resolution(High) 3
    Resolution(Low) 30
    Number Reflections(All) 12289
    Number Reflections(Observed) 10014
    Percent Possible(Observed) 81.5
    Redundancy 15.5
     
    High Resolution Shell Details
    Resolution(High) 3.0
    Resolution(Low) 3.11
    Percent Possible(All) 51.7
    Mean I Over Sigma(Observed) 3.0
    R-Sym I(Observed) 0.43
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method MAD
    reflnsShellList 3.0
    Resolution(Low) 30.0
    Cut-off Sigma(F) 0.0
    Number of Reflections(all) 12289
    Number of Reflections(Observed) 10014
    Number of Reflections(R-Free) 1031
    Percent Reflections(Observed) 81.5
    R-Factor(All) 0.2497
    R-Factor(Observed) 0.2497
    R-Work 0.2476
    R-Free 0.268
    R-Free Selection Details random
     
    Temperature Factor Modeling
    Data Not Available
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 3.0
    Shell Resolution(Low) 3.11
    Number of Reflections(R-Free) 46
    R-Factor(R-Work) 0.4186
    R-Factor(R-Free) 0.4421
    Percent Reflections(Observed) 51.3
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 0
    Nucleic Acid Atoms 1497
    Heterogen Atoms 2
    Solvent Atoms 0
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) DENZO
    Data Reduction (data scaling) SCALEPACK
    Structure Solution CNS
    Structure Refinement CNS
     
    Software
    refinement CNS
    model building CNS