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X-RAY DIFFRACTION
Materials and Methods page
1KV3
  •   Crystallization Hide
    Crystallization Experiments
    Method VAPOR DIFFUSION, HANGING DROP
    pH 6.6
    Temperature 4.0
    Details 50 mM MES, pH 6.6, 200 mM NaCl, 50 mM MgCl2, 6-8% PEG3350 and 5 mM DTT, VAPOR DIFFUSION, HANGING DROP, temperature 4K
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 132.48 α = 90
    b = 168.8 β = 90
    c = 238.57 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
    Details mirros
    Collection Date 2000-11-29
     
    Diffraction Radiation
    Monochromator mirror
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source SYNCHROTRON
    Type APS BEAMLINE 14-BM-D
    Wavelength List 1.0
    Site APS
    Beamline 14-BM-D
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma (F) 0.0
    Observed Criterion Sigma(I) 0.0
    Resolution(High) 2.8
    Resolution(Low) 52
    Number Reflections(All) 131998
    Number Reflections(Observed) 124870
    Percent Possible(Observed) 94.6
    R Merge I(Observed) 0.085
    B(Isotropic) From Wilson Plot 64.6
    Redundancy 4.4
     
    High Resolution Shell Details
    Resolution(High) 2.8
    Resolution(Low) 2.98
    Percent Possible(All) 88.8
    R Merge I(Observed) 0.47
    R-Sym I(Observed) 0.47
    Redundancy 4.0
    Number Unique Reflections(All) 18358
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method MOLECULAR REPLACEMENT
    reflnsShellList 2.8
    Resolution(Low) 51.79
    Cut-off Sigma(I) 0.0
    Cut-off Sigma(F) 0.0
    Number of Reflections(all) 131998
    Number of Reflections(Observed) 124870
    Number of Reflections(R-Free) 6267
    Percent Reflections(Observed) 94.6
    R-Factor(All) 0.233
    R-Factor(Observed) 0.233
    R-Work 0.233
    R-Free 0.272
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Isotropic Thermal Model RESTRAINED
    Mean Isotropic B Value 57.2
    Anisotropic B[1][1] 2.53
    Anisotropic B[1][2] 0.0
    Anisotropic B[1][3] 0.0
    Anisotropic B[2][2] -11.78
    Anisotropic B[2][3] 0.0
    Anisotropic B[3][3] 9.25
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 2.8
    Shell Resolution(Low) 2.98
    Number of Reflections(R-Free) 949
    Number of Reflections(R-Work) 18358
    R-Factor(R-Work) 0.36
    R-Factor(R-Free) 0.401
    R-Free Error 0.013
    Percent Reflections(Observed) 88.8
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    c_scangle_it 8.45
    c_scbond_it 6.27
    c_mcangle_it 4.09
    c_mcbond_it 2.49
    c_improper_angle_d 1.49
    c_dihedral_angle_d 26.3
    c_angle_deg 1.7
    c_bond_d 0.013
     
    Coordinate Error
    Luzzati ESD(Observed) 0.38
    Luzzati Sigma A(Observed) 0.45
    Luzzati Resolution Cutoff(Low) 5.0
    Luzzati ESD(R-Free Set) 0.46
    Luzzati Sigma A(R-Free Set) 0.53
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 30870
    Nucleic Acid Atoms 0
    Heterogen Atoms 168
    Solvent Atoms 428
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) DENZO
    Data Reduction (data scaling) SCALEPACK
    Structure Solution MOLREP
    Structure Refinement CNS 1.0
     
    Software
    refinement CNS version: 1.0
    model building MolRep
    data reduction SCALEPACK
    data collection DENZO