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X-RAY DIFFRACTION
Materials and Methods page
1TTU
  •   Crystallization Hide
    Crystallization Experiments
    Method VAPOR DIFFUSION, HANGING DROP
    pH 5.5
    Temperature 277.0
    Details MES, ammonium sulfate, PEG 20K, ethylene glycol, pH 5.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 127.55 α = 90
    b = 127.55 β = 90
    c = 97.6 γ = 120
     
    Space Group
    Space Group Name:    P 61
     
     
  •   Diffraction Hide
    Diffraction Detector
    Detector CCD
    Type ADSC QUANTUM 4
    Detector CCD
    Type MARRESEARCH
     
    Diffraction Radiation
    Diffraction Protocol SINGLE WAVELENGTH
    Diffraction Protocol MAD
     
    Diffraction Source
    Source SYNCHROTRON
    Type NSLS BEAMLINE X4A
    Wavelength List 0.9792
    Site NSLS
    Beamline X4A
    Source SYNCHROTRON
    Type APS BEAMLINE 31-ID
    Wavelength List 0.9791, 0.9793, 0.9795, 0.9686
    Site APS
    Beamline 31-ID
     
     
  •   Refinement Data Hide
    Reflection Details
    Resolution(High) 2.8
    Resolution(Low) 20
    Number Reflections(All) 22264
    Number Reflections(Observed) 22264
    Percent Possible(Observed) 99.7
    R Merge I(Observed) 0.046
    B(Isotropic) From Wilson Plot 89.1
    Redundancy 7.5
     
    High Resolution Shell Details
    Resolution(High) 2.8
    Resolution(Low) 2.9
    Percent Possible(All) 100.0
    R Merge I(Observed) 0.313
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method MAD
    reflnsShellList 2.85
    Resolution(Low) 19.99
    Cut-off Sigma(F) 0.0
    Number of Reflections(Observed) 21051
    Number of Reflections(R-Free) 2085
    Percent Reflections(Observed) 99.6
    R-Factor(Observed) 0.201
    R-Work 0.201
    R-Free 0.273
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Isotropic Thermal Model RESTRAINED
    Mean Isotropic B Value 68.2
    Anisotropic B[1][1] 2.82
    Anisotropic B[1][2] 15.55
    Anisotropic B[1][3] 0.0
    Anisotropic B[2][2] 2.82
    Anisotropic B[2][3] 0.0
    Anisotropic B[3][3] -5.63
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 2.85
    Shell Resolution(Low) 3.03
    Number of Reflections(R-Free) 364
    Number of Reflections(R-Work) 3162
    R-Factor(R-Work) 0.316
    R-Factor(R-Free) 0.408
    R-Free Error 0.021
    Percent Reflections(Observed) 100.0
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    c_scangle_it 11.49
    c_scbond_it 8.83
    c_mcangle_it 8.48
    c_mcbond_it 5.76
    c_improper_angle_d 1.07
    c_dihedral_angle_d 25.0
    c_angle_deg 1.6
    c_bond_d 0.01
     
    Coordinate Error
    Luzzati ESD(Observed) 0.33
    Luzzati Sigma A(Observed) 0.37
    Luzzati Resolution Cutoff(Low) 5.0
    Luzzati ESD(R-Free Set) 0.48
    Luzzati Sigma A(R-Free Set) 0.53
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 3467
    Nucleic Acid Atoms 609
    Heterogen Atoms 36
    Solvent Atoms 46
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) DENZO
    Data Reduction (data scaling) SCALEPACK
    Structure Solution SHARP
    Structure Refinement CNS 1.1
     
    Software
    refinement CNS version: 1.1