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X-RAY DIFFRACTION
Materials and Methods page
2C7Q
  •   Crystallization Hide
    Crystallization Experiments
    pH 5.6
    Details 50 MM NA CITRATE PH 5.6, 1.6 M AMMONIUM SULFATE
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 95.1 α = 90
    b = 95.1 β = 90
    c = 312.18 γ = 120
     
    Space Group
    Space Group Name:    H 3 2
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 100
     
    Diffraction Detector
    Detector IMAGE PLATE
    Type MARRESEARCH
    Details MIRRORS
    Collection Date 2004-07-30
     
    Diffraction Radiation
    Monochromator SI(111)
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source SYNCHROTRON
    Type EMBL/DESY, HAMBURG BEAMLINE X13
    Wavelength 1.050
    Site EMBL/DESY, HAMBURG
    Beamline X13
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma(I) 3.7
    Resolution(High) 1.85
    Resolution(Low) 31
    Number Reflections(Observed) 45796
    Percent Possible(Observed) 98.7
    R Merge I(Observed) 0.07
    B(Isotropic) From Wilson Plot 10.6
    Redundancy 8.7
     
    High Resolution Shell Details
    Resolution(High) 1.85
    Resolution(Low) 1.96
    Percent Possible(All) 94.5
    R Merge I(Observed) 0.2
    Mean I Over Sigma(Observed) 3.7
    Redundancy 3.6
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method MOLECULAR REPLACEMENT
    reflnsShellList 1.85
    Resolution(Low) 30.98
    Cut-off Sigma(F) 0.0
    Number of Reflections(Observed) 45794
    Number of Reflections(R-Free) 4631
    Percent Reflections(Observed) 98.3
    R-Factor(Observed) 0.187
    R-Work 0.187
    R-Free 0.21
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Isotropic Thermal Model RESTRAINED
    Mean Isotropic B Value 15.9
    Anisotropic B[1][1] 1.14
    Anisotropic B[1][2] 0.77
    Anisotropic B[1][3] 0.0
    Anisotropic B[2][2] 1.14
    Anisotropic B[2][3] 0.0
    Anisotropic B[3][3] -2.28
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 1.85
    Shell Resolution(Low) 1.97
    Number of Reflections(R-Free) 720
    Number of Reflections(R-Work) 6523
    R-Factor(R-Work) 0.212
    R-Factor(R-Free) 0.235
    R-Free Error 0.009
    Percent Reflections(Observed) 94.7
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    c_scangle_it 1.15
    c_scbond_it 0.67
    c_mcangle_it 0.79
    c_mcbond_it 0.47
    c_improper_angle_d 1.11
    c_bond_d 0.006
    c_angle_deg 1.3
    c_dihedral_angle_d 22.9
     
    Coordinate Error
    Luzzati ESD(Observed) 0.19
    Luzzati Sigma A(Observed) 0.14
    Luzzati Resolution Cutoff(Low) 5.0
    Luzzati ESD(R-Free Set) 0.21
    Luzzati Sigma A(R-Free Set) 0.14
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 2574
    Nucleic Acid Atoms 512
    Heterogen Atoms 54
    Solvent Atoms 366
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) MOSFLM
    Data Reduction (data scaling) CCP4 (SCALA)
    Structure Solution AMORE
    Structure Refinement CNS 1.0
     
    Software
    refinement CNS version: 1.0
    model building AMORE