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X-RAY DIFFRACTION
Materials and Methods page
1CQM
  •   Crystallization Hide
    Crystallization Experiments
    Method VAPOR DIFFUSION, SITTING DROP
    pH 8.5
    Temperature 20.0
    Details PEG 400, SODIUM CITRATE, pH 8.5, VAPOR DIFFUSION, SITTING DROP, temperature 20K
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 51.08 α = 90
    b = 105.55 β = 90
    c = 80.84 γ = 90
     
    Space Group
    Space Group Name:    C 2 2 21
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 100
     
    Diffraction Detector
    Detector IMAGE PLATE
    Type MARRESEARCH
    Collection Date 1999-05-06
     
    Diffraction Radiation
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source SYNCHROTRON
    Type MAX II BEAMLINE I711
    Wavelength 1.0158
    Site MAX II
    Beamline I711
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma (F) 3.0
    Observed Criterion Sigma(I) 3.0
    Resolution(High) 1.65
    Resolution(Low) 20
    Number Reflections(All) 25338
    Number Reflections(Observed) 24926
    Percent Possible(Observed) 94.6
    R Merge I(Observed) 0.056
    B(Isotropic) From Wilson Plot 18.7
    Redundancy 3.0
     
    High Resolution Shell Details
    Resolution(High) 1.65
    Resolution(Low) 1.74
    Percent Possible(All) 94.6
    R Merge I(Observed) 0.243
    Redundancy 3.1
     
     
  •   Refinement Hide
    Refinement Statistics
    reflnsShellList 1.65
    Resolution(Low) 20.0
    Cut-off Sigma(F) 0.0
    Number of Reflections(Observed) 24922
    Number of Reflections(R-Free) 896
    Percent Reflections(Observed) 93.4
    R-Factor(Observed) 0.247
    R-Work 0.247
    R-Free 0.253
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Isotropic Thermal Model RESTRAINED
    Mean Isotropic B Value 16.6
    Anisotropic B[1][1] 1.1
    Anisotropic B[1][2] 0.0
    Anisotropic B[1][3] 0.0
    Anisotropic B[2][2] -1.09
    Anisotropic B[2][3] 0.0
    Anisotropic B[3][3] 0.0
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 1.65
    Shell Resolution(Low) 1.75
    Number of Reflections(R-Free) 150
    Number of Reflections(R-Work) 3859
    R-Factor(R-Work) 0.296
    R-Factor(R-Free) 0.304
    R-Free Error 0.025
    Percent Reflections(Observed) 91.5
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    c_scangle_it 1.12
    c_scbond_it 0.69
    c_mcangle_it 0.72
    c_mcbond_it 0.4
    c_improper_angle_d 0.75
    c_bond_d 0.005
    c_angle_deg 1.3
    c_dihedral_angle_d 23.3
     
    Coordinate Error
    Luzzati ESD(Observed) 0.23
    Luzzati Sigma A(Observed) 0.16
    Luzzati Resolution Cutoff(Low) 5.0
    Luzzati ESD(R-Free Set) 0.24
    Luzzati Sigma A(R-Free Set) 0.18
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 1638
    Nucleic Acid Atoms 0
    Heterogen Atoms 0
    Solvent Atoms 156
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) MOSFLM
    Data Reduction (data scaling) CCP4 (SCALA)
    Structure Solution CNS
    Structure Refinement CNS 0.5
     
    Software
    refinement CNS version: 0.5
    model building CNS