POP-OUT | CLOSE
 
X-RAY DIFFRACTION
Materials and Methods page
1A2B
  •   Crystallization Hide
    Crystallization Experiments
    Method vapor diffusion - hanging drop
    pH 8.5
    Temperature 277.0
    Details CRYSTALS WERE OBTAINED AT 277 K BY THE HANGING-DROP VAPOR DIFFUSION METHOD FROM SOLUTIONS CONTAINING 10 MG/ML(PROTEIN,GTPGAMMAS,MG2+ MIXTURE), 10% PEG 8000,7.5% 14-DIOXANE, 50 MM TRIS-HCL PH 8.5, EQUILIBRATED AGAINST 20% PEG 8000,15% 14-DIOXANE, 100 MM TRIS-HCL PH 8.5, vapor diffusion - hanging drop
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 62.02 α = 90
    b = 74.78 β = 90
    c = 50.52 γ = 90
     
    Space Group
    Space Group Name:    P 21 21 2
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 283
     
    Diffraction Detector
    Detector IMAGE PLATE
    Type RIGAKU RAXIS IIC
    Collection Date 1997-03
     
    Diffraction Radiation
    Monochromator GRAPHITE(002)
     
    Diffraction Source
    Source ROTATING ANODE
    Type RIGAKU RUH3R
    Wavelength 1.5418
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma(I) 1.0
    Resolution(High) 2.4
    Number Reflections(Observed) 8683
    Percent Possible(Observed) 89.3
    R Merge I(Observed) 0.0875
    B(Isotropic) From Wilson Plot 31.6
     
    High Resolution Shell Details
    Resolution(High) 2.4
    Resolution(Low) 2.5
    Percent Possible(All) 74.8
    R Merge I(Observed) 0.267
    Mean I Over Sigma(Observed) 2.04
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method MOLECULAR REPLACEMENT
    reflnsShellList 2.4
    Resolution(Low) 15.0
    Cut-off Sigma(F) 1.0
    Number of Reflections(Observed) 8382
    Number of Reflections(R-Free) 893
    Percent Reflections(Observed) 86.7
    R-Factor(Observed) 0.195
    R-Work 0.195
    R-Free 0.268
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Mean Isotropic B Value 43.5
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 2.4
    Shell Resolution(Low) 2.51
    Number of Reflections(R-Free) 77
    Number of Reflections(R-Work) 717
    R-Factor(R-Work) 0.306
    R-Factor(R-Free) 0.381
    Percent Reflections(Observed) 66.4
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    x_improper_angle_d 1.099
    x_bond_d 0.01
    x_angle_deg 1.314
    x_dihedral_angle_d 22.36
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 1417
    Nucleic Acid Atoms 0
    Heterogen Atoms 33
    Solvent Atoms 38
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) PROCESS
    Data Reduction (data scaling) PROCESS
    Structure Solution X-PLOR 3.8
    Structure Refinement X-PLOR 3.8
     
    Software
    refinement X-PLOR version: 3.8
    model building X-PLOR version: 3.8
    data reduction PROCESS
    data collection PROCESS