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X-RAY DIFFRACTION
Materials and Methods page
2XG1
  •   Crystallization Hide
    Crystallization Experiments
    pH 7.18
    Details AS STATED IN M.SELMER, C.M.DUNHAM,F.V.MURPHY,A.WEIXLBAUMER,S.PETRY,A.C.KELLEY,J.R .WEIR, V.RAMAKRISHNAN STRUCTURE OF THE 70S RIBOSOME COMPLEXED WITH MRNA AND TRNA (2006) SCIENCE 313: 1935, pH 7.18
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 212.04 α = 90
    b = 453.51 β = 90
    c = 616.1 γ = 90
     
    Space Group
    Space Group Name:    P 21 21 21
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 100
     
    Diffraction Detector
    Collection Date 2009-04-06
     
    Diffraction Radiation
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source SYNCHROTRON
    Type ESRF BEAMLINE ID14-4
    Wavelength 0.9395
    Site ESRF
    Beamline ID14-4
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma(I) 1.5
    Resolution(High) 3.2
    Resolution(Low) 44.53
    Number Reflections(Observed) 960332
    Percent Possible(Observed) 99.4
    R Merge I(Observed) 0.11
    B(Isotropic) From Wilson Plot 69.3
    Redundancy 4.18
     
    High Resolution Shell Details
    Resolution(High) 3.2
    Resolution(Low) 3.4
    Percent Possible(All) 99.1
    R Merge I(Observed) 0.99
    Mean I Over Sigma(Observed) 1.5
    Redundancy 4.17
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method OTHER
    reflnsShellList 3.2
    Resolution(Low) 44.53
    Cut-off Sigma(F) 0.0
    Number of Reflections(Observed) 960332
    Number of Reflections(R-Free) 44837
    Percent Reflections(Observed) 99.4
    R-Factor(Observed) 0.228
    R-Work 0.228
    R-Free 0.27
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Isotropic Thermal Model RESTRAINED
    Mean Isotropic B Value 113.2
    Anisotropic B[1][1] -9.48
    Anisotropic B[1][2] 0.0
    Anisotropic B[1][3] 0.0
    Anisotropic B[2][2] 5.85
    Anisotropic B[2][3] 0.0
    Anisotropic B[3][3] 3.64
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 3.2
    Shell Resolution(Low) 3.4
    Number of Reflections(R-Free) 7957
    Number of Reflections(R-Work) 150602
    R-Factor(R-Work) 0.322
    R-Factor(R-Free) 0.348
    R-Free Error 0.004
    Percent Reflections(Observed) 99.1
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    c_improper_angle_d 1.67
    c_bond_d 0.02
    c_angle_deg 1.2
    c_dihedral_angle_d 28.9
     
    Coordinate Error
    Luzzati ESD(Observed) 0.42
    Luzzati Sigma A(Observed) 0.62
    Luzzati Resolution Cutoff(Low) 5.0
    Luzzati ESD(R-Free Set) 0.49
    Luzzati Sigma A(R-Free Set) 0.65
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 19259
    Nucleic Acid Atoms 35866
    Heterogen Atoms 1173
    Solvent Atoms 0
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) XDS
    Data Reduction (data scaling) XSCALE
    Structure Refinement CNS 1.2
     
    Software
    refinement CNS version: 1.2