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X-RAY DIFFRACTION
Materials and Methods page
2QAD
  •   Crystallization Hide
    Crystallization Experiments
    Method VAPOR DIFFUSION, HANGING DROP
    pH 6.5
    Temperature 293.0
    Details 17-19% polyethylene glycol (PEG) 1500, 0.1 M Na cacodylate pH 6.5, 0.2 M Na malonate, pH 5.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 109.6 α = 90
    b = 53.02 β = 104.64
    c = 225.33 γ = 90
     
    Space Group
    Space Group Name:    P 1 21 1
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 100
     
    Diffraction Detector
    Detector CCD
    Type MARRESEARCH
    Collection Date 2004-04-20
     
    Diffraction Radiation
    Monochromator Si (220)
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source SYNCHROTRON
    Type APS BEAMLINE 22-ID
    Wavelength List 1.00
    Site APS
    Beamline 22-ID
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma(I) -3.0
    Resolution(High) 3.3
    Resolution(Low) 50
    Number Reflections(Observed) 25816
    Percent Possible(Observed) 67.8
    R Merge I(Observed) 0.133
    Redundancy 3.1
     
    High Resolution Shell Details
    Resolution(High) 3.3
    Resolution(Low) 3.42
    Percent Possible(All) 16.2
    R Merge I(Observed) 0.537
    Mean I Over Sigma(Observed) 1.3
    Redundancy 1.7
    Number Unique Reflections(All) 595
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method MOLECULAR REPLACEMENT
    reflnsShellList 3.3
    Resolution(Low) 20.0
    Cut-off Sigma(F) 0.0
    Number of Reflections(all) 38401
    Number of Reflections(Observed) 25600
    Number of Reflections(R-Free) 1329
    Percent Reflections(Observed) 66.7
    R-Work 0.202
    R-Free 0.269
    R-Free Selection Details random
     
    Temperature Factor Modeling
    Isotropic Thermal Model overall
    Mean Isotropic B Value 156.0
    Anisotropic B[1][1] -46.386
    Anisotropic B[1][2] 0.0
    Anisotropic B[1][3] -20.021
    Anisotropic B[2][2] 16.91
    Anisotropic B[2][3] 0.0
    Anisotropic B[3][3] 29.475
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    f_angle_deg 1.092
    f_bond_d 0.0054
     
    Coordinate Error
    Luzzati ESD(Observed) 0.53
    Luzzati Sigma A(Observed) 0.71
    Luzzati Resolution Cutoff(Low) 20.0
    Luzzati ESD(R-Free Set) 0.58
    Luzzati Sigma A(R-Free Set) 0.84
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 14497
    Nucleic Acid Atoms 0
    Heterogen Atoms 490
    Solvent Atoms 0
     
     
  •   Software and Computing Hide
    Computing
    Data Collection HKL-2000
    Data Reduction (intensity integration) HKL-2000
    Data Reduction (data scaling) HKL-2000
    Structure Solution AMoRE
    Structure Refinement CNS/PHENIX
     
    Software
    refinement CNS/PHENIX
    model building AMoRE
    data collection HKL-2000