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X-RAY DIFFRACTION
Materials and Methods page
3EN2
  •   Crystallization Hide
    Crystallization Experiments
    Temperature 277.0
    Details 5.76M K-Acetate 0.1M Na3-Citrate, Under oil batch, temperature 277K
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 70.69 α = 90
    b = 70.69 β = 90
    c = 141.2 γ = 90
     
    Space Group
    Space Group Name:    I 41 2 2
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 100
     
    Diffraction Detector
    Detector CCD
    Type ADSC QUANTUM 4
    Details MIRRORS
    Collection Date 2008-09-20
     
    Diffraction Radiation
     
    Diffraction Source
    Source ROTATING ANODE
    Type RIGAKU
    Wavelength 1.5418
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma(I) -3.0
    Resolution(High) 2.3
    Resolution(Low) 20
    Number Reflections(Observed) 8234
    Percent Possible(Observed) 98.8
    R Merge I(Observed) 0.086
    B(Isotropic) From Wilson Plot 23.6
    Redundancy 14.0
     
    High Resolution Shell Details
    Resolution(High) 2.3
    Resolution(Low) 2.38
    Percent Possible(All) 92.1
    R Merge I(Observed) 0.239
    Mean I Over Sigma(Observed) 5.7
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method MOLECULAR REPLACEMENT
    reflnsShellList 2.3
    Resolution(Low) 19.59
    Cut-off Sigma(F) 1.0
    Number of Reflections(Observed) 7570
    Number of Reflections(R-Free) 418
    Percent Reflections(Observed) 91.1
    R-Factor(Observed) 0.225
    R-Work 0.225
    R-Free 0.24
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Isotropic Thermal Model RESTRAINED
    Mean Isotropic B Value 26.2
    Anisotropic B[1][1] 5.18
    Anisotropic B[1][2] 0.0
    Anisotropic B[1][3] 0.0
    Anisotropic B[2][2] 5.18
    Anisotropic B[2][3] 0.0
    Anisotropic B[3][3] -10.35
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 2.3
    Shell Resolution(Low) 2.44
    Number of Reflections(R-Free) 48
    Number of Reflections(R-Work) 981
    R-Factor(R-Work) 0.264
    R-Factor(R-Free) 0.253
    R-Free Error 0.037
    Percent Reflections(Observed) 76.3
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    c_improper_angle_d 0.64
    c_bond_d 0.006
    c_angle_deg 1.3
    c_dihedral_angle_d 25.6
     
    Coordinate Error
    Luzzati ESD(Observed) 0.28
    Luzzati Sigma A(Observed) 0.19
    Luzzati Resolution Cutoff(Low) 5.0
    Luzzati ESD(R-Free Set) 0.32
    Luzzati Sigma A(R-Free Set) 0.24
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 689
    Nucleic Acid Atoms 0
    Heterogen Atoms 2
    Solvent Atoms 77
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) DENZO
    Data Reduction (data scaling) SCALEPACK
    Structure Solution BALBES
    Structure Refinement CNS 1.2
     
    Software
    refinement CNS version: 1.2
    model building BALBES