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ELECTRON CRYSTALLOGRAPHY
Materials and Methods page
1JFF
  •   Crystallization Hide
    Crystallization Experiments
    Method aberrant polymerization of tubulin
    pH 5.8
    Temperature 305.0
    Details Zn++, pH 5.8, aberrant polymerization of tubulin, temperature 305K
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 81.2 α = 90
    b = 93.5 β = 90
    c = 90 γ = 90
     
    Space Group
    Space Group Name:    P 1 21 1
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 93
     
    Diffraction Detector
    Detector CCD
    Type GATAN
    Detector FILM
    Type KODAK
    Collection Date 1994-01-01
     
    Diffraction Radiation
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source ELECTRON MICROSCOPE
    Type JEOL 4000 electron microscope
    Wavelength List 0.0194
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma (F) 0.0
    Observed Criterion Sigma(I) 0.0
    Resolution(High) 3.5
    Resolution(Low) 20
    Number Reflections(All) 12422
    Number Reflections(Observed) 12422
    Percent Possible(Observed) 73.0
    R Merge I(Observed) 0.25
    B(Isotropic) From Wilson Plot 40.0
    Redundancy 6.0
     
    High Resolution Shell Details
    Resolution(High) 3.5
    Resolution(Low) 3.7
    Percent Possible(All) 73.0
    Mean I Over Sigma(Observed) 2.3
    Number Unique Reflections(All) 1080
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method MOLECULAR REPLACEMENT
    reflnsShellList 3.5
    Resolution(Low) 20.0
    Cut-off Sigma(I) 0.0
    Cut-off Sigma(F) 0.0
    Number of Reflections(all) 12422
    Number of Reflections(Observed) 12422
    Number of Reflections(R-Free) 623
    R-Work 0.2315
    R-Free 0.2966
    R-Free Selection Details random
     
    Resolution Shells
    Refinement method ELECTRON CRYSTALLOGRAPHY
    Shell Resolution(High) 3.5
    Shell Resolution(Low) 3.66
    Number of Reflections(Observed) 1080
    Number of Reflections(R-Free) 58
    R-Factor(R-Work) 0.2315
    R-Factor(R-Free) 0.3834
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    c_angle_d 1.561
    c_bond_d 0.01
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 6578
    Nucleic Acid Atoms 0
    Heterogen Atoms 124
    Solvent Atoms 0
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (data scaling) MRC IMAGE PROCESSING PROGRAMS
    Structure Solution CCP4
    Structure Refinement CNS 0.9
     
    Software
    refinement CNS version: 0.9
    model building CCP4