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X-RAY DIFFRACTION
Materials and Methods page
1PXP
  •   Crystallization Hide
    Crystallization Experiments
    Method VAPOR DIFFUSION, HANGING DROP
    pH 7.8
    Temperature 277.0
    Details PEG 6000, NA-HEPES, pH 7.8, VAPOR DIFFUSION, HANGING DROP, temperature 277K
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 53.34 α = 90
    b = 71.79 β = 90
    c = 71.41 γ = 90
     
    Space Group
    Space Group Name:    P 21 21 21
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 100
     
    Diffraction Detector
    Detector CCD
    Type ADSC QUANTUM 4
     
    Diffraction Radiation
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source SYNCHROTRON
    Type SRS BEAMLINE PX9.6
    Wavelength List 0.87
    Site SRS
    Beamline PX9.6
     
     
  •   Refinement Data Hide
    Reflection Details
    Resolution(High) 2.3
    Resolution(Low) 23
    Number Reflections(Observed) 12686
    Percent Possible(Observed) 98.7
    R Merge I(Observed) 0.5
    B(Isotropic) From Wilson Plot 30.5
    Redundancy 3.4
     
    High Resolution Shell Details
    Resolution(High) 2.3
    Resolution(Low) 2.44
    Percent Possible(All) 96.7
    R Merge I(Observed) 0.148
    Mean I Over Sigma(Observed) 4.9
    Redundancy 3.4
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method MOLECULAR REPLACEMENT
    reflnsShellList 2.3
    Resolution(Low) 23.6
    Cut-off Sigma(F) 0.0
    Number of Reflections(Observed) 12512
    Number of Reflections(R-Free) 642
    Percent Reflections(Observed) 98.7
    R-Factor(Observed) 0.23
    R-Work 0.23
    R-Free 0.273
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Isotropic Thermal Model RESTRAINED
    Mean Isotropic B Value 48.9
    Anisotropic B[1][1] -0.44
    Anisotropic B[1][2] 0.0
    Anisotropic B[1][3] 0.0
    Anisotropic B[2][2] 7.53
    Anisotropic B[2][3] 0.0
    Anisotropic B[3][3] -7.09
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 2.3
    Shell Resolution(Low) 2.44
    Number of Reflections(Observed) 1877
    Number of Reflections(R-Free) 111
    Number of Reflections(R-Work) 1877
    R-Factor(R-Work) 0.254
    R-Factor(R-Free) 0.308
    R-Free Error 0.029
    Percent Reflections(Observed) 96.7
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    c_scangle_it 3.22
    c_scbond_it 2.12
    c_mcangle_it 3.13
    c_mcbond_it 1.79
    c_improper_angle_d 0.88
    c_bond_d 0.006
    c_angle_deg 1.2
    c_dihedral_angle_d 22.6
     
    Coordinate Error
    Luzzati ESD(Observed) 0.28
    Luzzati Sigma A(Observed) 0.16
    Luzzati Resolution Cutoff(Low) 5.0
    Luzzati ESD(R-Free Set) 0.35
    Luzzati Sigma A(R-Free Set) 0.26
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 2366
    Nucleic Acid Atoms 0
    Heterogen Atoms 23
    Solvent Atoms 87
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) MOSFLM
    Data Reduction (data scaling) CCP4 (SCALA)
    Structure Solution MOLREP
    Structure Refinement CNS 1.0
     
    Software
    refinement CNS version: 1.0