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X-RAY DIFFRACTION
Materials and Methods page
1QA0
  •   Crystallization Hide
    Crystallization Experiments
    Method VAPOR DIFFUSION, HANGING DROP
    pH 7.4
    Temperature 298.0
    Details MICROCRYSTALS WERE INITIALLY GROWN USING THE HANGING DROP METHOD IN LINBRO CULTURE PLATES. CRYSTALLIZATION RESERVOIRS CONTAIN 1.8 - 2.0 M AMMONIUM SULFATE, 50 MM TRIS HCL, 10 MM CACL2, PH 7.4. SIX UL OF 15 MG/ML BOVINE TRYPSIN IN 20 MM 2-AMINOBENZIMIDAZOLE WAS ADDED TO 6 UL OF RESERVOIR. MACROSEEDING WAS USED TO GROW LARGE CRYSTALS (REF 2). SINGLE CRYSTALS WERE WASHED IN 0.8 M AMMONIUM SULFATE, 50 MM TRIS HCL, 10 MM CACL2, PH 7.4. THE WASHED CRYSTALS WERE PLACED IN A 18 HOUR OLD HANGING., VAPOR DIFFUSION, HANGING DROP, temperature 298K
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 55.02 α = 90
    b = 55.02 β = 90
    c = 109.14 γ = 120
     
    Space Group
    Space Group Name:    P 31 2 1
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 298
     
    Diffraction Detector
    Detector IMAGE PLATE
    Type RIGAKU RAXIS II
    Collection Date 1994-10-10
     
    Diffraction Radiation
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source ROTATING ANODE
    Type RIGAKU RU300
    Wavelength 1.5418
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma (F) 0.0
    Observed Criterion Sigma(I) 0.0
    Resolution(High) 1.8
    Resolution(Low) 10
    Number Reflections(All) 16893
    Number Reflections(Observed) 16893
    Percent Possible(Observed) 91.1
    R Merge I(Observed) 0.095
    Redundancy 6.3
     
    High Resolution Shell Details
    Resolution(High) 1.8
    Resolution(Low) 1.9
    Percent Possible(All) 78.5
    R Merge I(Observed) 0.022
    Redundancy 4.0
     
     
  •   Refinement Hide
    Refinement Statistics
    reflnsShellList 1.8
    Resolution(Low) 10.0
    Cut-off Sigma(F) 2.0
    Number of Reflections(Observed) 16656
    R-Factor(Observed) 0.172
    R-Work 0.172
     
    Temperature Factor Modeling
    Data Not Available
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    p_transverse_tor 18.3
    p_staggered_tor 17.5
    p_planar_tor 2.6
    p_xyhbond_nbd 0.203
    p_multtor_nbd 0.185
    p_bond_d 0.017
    p_angle_d 0.033
    p_planar_d 0.046
    p_mcbond_it 2.008
    p_mcangle_it 2.568
    p_scbond_it 3.605
    p_scangle_it 4.669
    p_plane_restr 0.016
    p_chiral_restr 0.167
    p_singtor_nbd 0.167
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 1626
    Nucleic Acid Atoms 0
    Heterogen Atoms 11
    Solvent Atoms 125
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) R-AXIS
    Data Reduction (data scaling) SCALEPACK
    Structure Solution XTALVIEW
    Structure Refinement PROFFT
     
    Software
    refinement PROFFT
    model building XTALVIEW
    data reduction SCALEPACK
    data collection R-AXIS