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X-RAY DIFFRACTION
Materials and Methods page
1CQN
  •   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 = 82.82 α = 90
    b = 82.82 β = 90
    c = 141.58 γ = 120
     
    Space Group
    Space Group Name:    P 64 2 2
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 100
     
    Diffraction Detector
    Detector IMAGE PLATE
    Type MARRESEARCH
    Collection Date 1999-02-27
     
    Diffraction Radiation
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source ROTATING ANODE
    Type RIGAKU RU200
    Wavelength 1.5418
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma(I) -3.0
    Resolution(High) 2.1
    Resolution(Low) 20
    Number Reflections(Observed) 14676
    Percent Possible(Observed) 84.0
    R Merge I(Observed) 0.076
    B(Isotropic) From Wilson Plot 15.2
    Redundancy 1.8
     
    High Resolution Shell Details
    Resolution(High) 2.1
    Resolution(Low) 2.17
    Percent Possible(All) 83.2
    R Merge I(Observed) 0.296
    Redundancy 1.8
     
     
  •   Refinement Hide
    Refinement Statistics
    reflnsShellList 2.1
    Resolution(Low) 20.0
    Cut-off Sigma(F) 0.0
    Number of Reflections(Observed) 14661
    Number of Reflections(R-Free) 722
    Percent Reflections(Observed) 84.0
    R-Factor(Observed) 0.218
    R-Work 0.218
    R-Free 0.276
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Isotropic Thermal Model RESTRAINED
    Mean Isotropic B Value 26.9
    Anisotropic B[1][1] 1.29
    Anisotropic B[1][2] -1.29
    Anisotropic B[1][3] 0.0
    Anisotropic B[2][2] 1.29
    Anisotropic B[2][3] 0.0
    Anisotropic B[3][3] -2.58
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 2.1
    Shell Resolution(Low) 2.23
    Number of Reflections(R-Free) 110
    Number of Reflections(R-Work) 2245
    R-Factor(R-Work) 0.268
    R-Factor(R-Free) 0.382
    R-Free Error 0.036
    Percent Reflections(Observed) 83.3
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    c_scangle_it 4.97
    c_scbond_it 3.49
    c_mcangle_it 2.77
    c_mcbond_it 2.03
    c_improper_angle_d 0.67
    c_bond_d 0.005
    c_angle_deg 1.3
    c_dihedral_angle_d 23.2
     
    Coordinate Error
    Luzzati ESD(Observed) 0.25
    Luzzati Sigma A(Observed) 0.21
    Luzzati Resolution Cutoff(Low) 5.0
    Luzzati ESD(R-Free Set) 0.34
    Luzzati Sigma A(R-Free Set) 0.35
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 1638
    Nucleic Acid Atoms 0
    Heterogen Atoms 0
    Solvent Atoms 143
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) DENZO
    Data Reduction (data scaling) SCALEPACK
    Structure Solution CNS
    Structure Refinement CNS 0.5
     
    Software
    refinement CNS version: 0.5
    model building CNS