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X-RAY DIFFRACTION
Materials and Methods page
1XE4
  •   Crystallization Hide
    Crystallization Experiments
    Method VAPOR DIFFUSION
    pH 6.5
    Temperature 295.0
    Details PEG 6000, sodium cacodylate, sodium chloride, pH 6.5, VAPOR DIFFUSION, temperature 295K
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 42.33 α = 90
    b = 101.31 β = 103.02
    c = 46.33 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
    Details mirror 1, double crystal, mirror 2
    Collection Date 2003-11-01
     
    Diffraction Radiation
    Monochromator sagitally focused Si (111)
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source SYNCHROTRON
    Type ESRF BEAMLINE BM30A
    Wavelength List 0.979577
    Site ESRF
    Beamline BM30A
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma (F) 0.0
    Observed Criterion Sigma(I) 0.0
    Resolution(High) 1.95
    Resolution(Low) 15.99
    Number Reflections(Observed) 26196
    Percent Possible(Observed) 94.5
    B(Isotropic) From Wilson Plot 10.6
    Redundancy 3.1
     
    High Resolution Shell Details
    Resolution(High) 1.95
    Resolution(Low) 2.06
    Percent Possible(All) 97.7
    Mean I Over Sigma(Observed) 3.1
    R-Sym I(Observed) 0.159
    Redundancy 3.0
    Number Unique Reflections(All) 3952
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method MOLECULAR REPLACEMENT
    reflnsShellList 1.95
    Resolution(Low) 15.99
    Cut-off Sigma(I) 0.0
    Cut-off Sigma(F) 0.0
    Number of Reflections(all) 27741
    Number of Reflections(Observed) 26184
    Number of Reflections(R-Free) 1330
    Percent Reflections(Observed) 94.4
    R-Factor(All) 0.208
    R-Factor(Observed) 0.196
    R-Work 0.196
    R-Free 0.233
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Isotropic Thermal Model RESTRAINED
    Mean Isotropic B Value 23.2
    Anisotropic B[1][1] -6.32
    Anisotropic B[1][2] 0.0
    Anisotropic B[1][3] 5.0
    Anisotropic B[2][2] -6.91
    Anisotropic B[2][3] 0.0
    Anisotropic B[3][3] 13.23
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 1.95
    Shell Resolution(Low) 2.07
    Number of Reflections(Observed) 4259
    Number of Reflections(R-Free) 225
    R-Factor(R-Work) 0.231
    R-Factor(R-Free) 0.255
    R-Free Error 0.017
    Percent Reflections(Observed) 97.4
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    c_scangle_it 2.67
    c_scbond_it 1.88
    c_mcangle_it 1.73
    c_mcbond_it 1.15
    c_improper_angle_d 0.77
    c_dihedral_angle_d 23.1
    c_angle_deg 1.2
    c_bond_d 0.006
     
    Coordinate Error
    Luzzati ESD(Observed) 0.21
    Luzzati Sigma A(Observed) 0.19
    Luzzati Resolution Cutoff(Low) 5.0
    Luzzati ESD(R-Free Set) 0.26
    Luzzati Sigma A(R-Free Set) 0.15
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 2687
    Nucleic Acid Atoms 0
    Heterogen Atoms 1
    Solvent Atoms 366
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) MOSFLM
    Data Reduction (data scaling) CCP4 (SCALA)
    Structure Solution AMORE
    Structure Refinement CNS 1.1
     
    Software
    refinement CNS version: 1.1