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X-RAY DIFFRACTION
Materials and Methods page
1QCP
  •   Crystallization Hide
    Crystallization Experiments
    pH 8.5
    Details VAPOR DIFFUSION, PH 8.5, 298K, AMMONIUM SULFATE, TRIS/HCL BUFFER
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 54.43 α = 90
    b = 54.43 β = 90
    c = 107.76 γ = 120
     
    Space Group
    Space Group Name:    P 31 2 1
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 100
     
    Diffraction Detector
    Detector IMAGE PLATE
    Type RIGAKU RAXIS
    Collection Date 1998-06-07
     
    Diffraction Radiation
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source ROTATING ANODE
    Type RIGAKU
    Wavelength 1.5418
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma(I) 0.0
    Resolution(High) 1.8
    Resolution(Low) 99
    Number Reflections(Observed) 17773
    Percent Possible(Observed) 99.7
    R Merge I(Observed) 0.039
    B(Isotropic) From Wilson Plot 16.3
    Redundancy 12.0
     
    High Resolution Shell Details
    Resolution(High) 1.8
    Resolution(Low) 99.0
    Percent Possible(All) 98.6
    R Merge I(Observed) 0.204
    Redundancy 12.0
     
     
  •   Refinement Hide
    Refinement Statistics
    reflnsShellList 1.8
    Resolution(Low) 8.0
    Cut-off Sigma(F) 3.0
    Number of Reflections(Observed) 16515
    Number of Reflections(R-Free) 1637
    Percent Reflections(Observed) 94.2
    R-Work 0.175
    R-Free 0.237
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Isotropic Thermal Model RESTRAINED
    Mean Isotropic B Value 21.0
    Anisotropic B[1][1] 0.45
    Anisotropic B[1][2] 0.98
    Anisotropic B[1][3] 0.0
    Anisotropic B[2][2] 0.45
    Anisotropic B[2][3] 0.0
    Anisotropic B[3][3] -0.91
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 1.8
    Shell Resolution(Low) 1.91
    Number of Reflections(R-Free) 232
    Number of Reflections(R-Work) 2162
    R-Factor(R-Work) 0.266
    R-Factor(R-Free) 0.274
    R-Free Error 0.018
    Percent Reflections(Observed) 83.8
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    c_scangle_it 3.63
    c_scbond_it 2.66
    c_mcangle_it 2.35
    c_mcbond_it 1.63
    c_improper_angle_d 0.99
    c_bond_d 0.005
    c_angle_deg 1.3
    c_dihedral_angle_d 27.6
     
    Coordinate Error
    Luzzati ESD(Observed) 0.19
    Luzzati Sigma A(Observed) 0.19
    Luzzati Resolution Cutoff(Low) 5.0
    Luzzati ESD(R-Free Set) 0.25
    Luzzati Sigma A(R-Free Set) 0.13
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 1629
    Nucleic Acid Atoms 0
    Heterogen Atoms 28
    Solvent Atoms 207
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) DENZO
    Data Reduction (data scaling) SCALEPACK
    Structure Solution X-PLOR
    Structure Refinement CNS 0.4
     
    Software
    refinement CNS version: 0.4
    model building X-PLOR
    data reduction SCALEPACK
    data collection DENZO