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X-RAY DIFFRACTION
Materials and Methods page
1G2F
  •   Crystallization Hide
    Crystallization Experiments
    Method VAPOR DIFFUSION, HANGING DROP
    pH 8
    Temperature 298.0
    Details PEG 400; NaCl; Bis-Tris Propane; CoCl2, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 104.8 α = 90
    b = 104.8 β = 90
    c = 104.2 γ = 120
     
    Space Group
    Space Group Name:    P 64
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 140
     
    Diffraction Detector
    Detector CCD
    Type ADSC QUANTUM 4
    Details KOHZU double crystal monochromator
    Collection Date 2000-03-15
     
    Diffraction Radiation
    Monochromator KOHZU double crystal monochormator
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source SYNCHROTRON
    Type NSLS BEAMLINE X4A
    Wavelength List 1.5418
    Site NSLS
    Beamline X4A
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma (F) 0.0
    Observed Criterion Sigma(I) 0.0
    Resolution(High) 2
    Resolution(Low) 20
    Number Reflections(All) 43331
    Number Reflections(Observed) 43331
    Percent Possible(Observed) 99.5
    B(Isotropic) From Wilson Plot 27.1
    Redundancy 11.46
     
    High Resolution Shell Details
    Resolution(High) 2.0
    Resolution(Low) 2.07
    Percent Possible(All) 96.2
    Mean I Over Sigma(Observed) 6.58
    R-Sym I(Observed) 56.7
    Redundancy 2.14
    Number Unique Reflections(All) 3595
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method MIR
    reflnsShellList 2.0
    Resolution(Low) 20.0
    Cut-off Sigma(I) 0.0
    Cut-off Sigma(F) 2.0
    Number of Reflections(all) 43331
    Number of Reflections(Observed) 40380
    Number of Reflections(R-Free) 4029
    Percent Reflections(Observed) 92.2
    R-Work 0.233
    R-Free 0.263
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Isotropic Thermal Model RESTRAINED
    Mean Isotropic B Value 41.6
    Anisotropic B[1][1] 0.0
    Anisotropic B[1][2] 0.0
    Anisotropic B[1][3] 0.0
    Anisotropic B[2][2] 0.0
    Anisotropic B[2][3] 0.0
    Anisotropic B[3][3] 0.0
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 2.0
    Shell Resolution(Low) 2.13
    Number of Reflections(R-Free) 585
    Number of Reflections(R-Work) 5087
    R-Factor(R-Work) 0.365
    R-Factor(R-Free) 0.376
    R-Free Error 0.016
    Percent Reflections(Observed) 78.3
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    x_scangle_it 5.72
    x_scbond_it 3.57
    x_mcangle_it 3.47
    x_mcbond_it 2.08
    x_improper_angle_d 1.23
    x_dihedral_angle_d 20.5
    x_angle_deg 1.1
    x_bond_d 0.006
     
    Coordinate Error
    Luzzati ESD(Observed) 0.34
    Luzzati Sigma A(Observed) 0.41
    Luzzati Resolution Cutoff(Low) 5.0
    Luzzati ESD(R-Free Set) 0.37
    Luzzati Sigma A(R-Free Set) 0.4
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 1447
    Nucleic Acid Atoms 1300
    Heterogen Atoms 6
    Solvent Atoms 227
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) IN-HOUSE SOFTWARE AT NSLS
    Data Reduction (data scaling) SCALEPACK
    Structure Solution MLPHARE
    Structure Refinement X-PLOR 3.851
     
    Software
    refinement X-PLOR(ONLINE) version: 3.851
    model building MLPHARE