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X-RAY DIFFRACTION
Materials and Methods page
4ABI
  •   Crystallization Hide
    Crystallization Experiments
    Details 1.85 M (NH4)2SO4,50 MM TRIS PH 8.5 WITH 60 MG/ML TRYPSIN (SIGMA T1246) IN 0.3 M (NH4)2SO4, 6 MM CACL2, 0.1 M TRIS PH 8.15, 60 MM BENZAMIDINE. TO 10 UL PROTEIN SOL 0.5 UL DIMETHYLFORMAMID WAS ADDED PRIOR CRYSTAL SET UP. CRYSTALS WERE SOAKED WITH PTA-SFTI (ADDED IN LYOPHYLIZED FORM TO THE CRYSTALLIZATION DROP AFTER 2 WEEKS CRYSTAL GROWTH). TOTAL SOAKING TIME 8 DAYS.
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 61.1 α = 90
    b = 63.2 β = 90
    c = 69.9 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 (SATURN 944PLUS)
    Type RIGAKU
    Details MIRRORS
    Collection Date 2011-11-11
     
    Diffraction Radiation
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source ROTATING ANODE
    Type MICROMAX 7HF
    Wavelength 1.5418
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma(I) 2.0
    Resolution(High) 1.55
    Resolution(Low) 46.9
    Number Reflections(Observed) 38509
    Percent Possible(Observed) 96.3
    R Merge I(Observed) 0.1
    Redundancy 3.8
     
    High Resolution Shell Details
    Resolution(High) 1.55
    Resolution(Low) 1.61
    Percent Possible(All) 90.4
    R Merge I(Observed) 0.39
    Mean I Over Sigma(Observed) 2.1
    Redundancy 2.2
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method MOLECULAR REPLACEMENT
    reflnsShellList 1.55
    Resolution(Low) 46.9
    Cut-off Sigma(F) 2.0
    Number of Reflections(Observed) 36482
    Number of Reflections(R-Free) 1931
    Percent Reflections(Observed) 90.4
    R-Factor(Observed) 0.19157
    R-Work 0.19004
    R-Free 0.21964
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Mean Isotropic B Value 20.706
    Anisotropic B[1][1] 1.59
    Anisotropic B[1][2] 0.0
    Anisotropic B[1][3] 0.0
    Anisotropic B[2][2] -0.38
    Anisotropic B[2][3] 0.0
    Anisotropic B[3][3] -0.38
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 1.55
    Shell Resolution(Low) 1.591
    Number of Reflections(R-Free) 123
    Number of Reflections(R-Work) 2296
    R-Factor(R-Work) 0.273
    R-Factor(R-Free) 0.269
    Percent Reflections(Observed) 87.27
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    r_gen_planes_refined 0.005
    r_chiral_restr 0.078
    r_dihedral_angle_4_deg 9.616
    r_dihedral_angle_3_deg 11.651
    r_dihedral_angle_2_deg 38.924
    r_dihedral_angle_1_deg 6.229
    r_angle_refined_deg 1.188
    r_bond_refined_d 0.007
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 1719
    Nucleic Acid Atoms 0
    Heterogen Atoms 68
    Solvent Atoms 250
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) HKL2000
    Data Reduction (data scaling) DENZO
    Structure Solution PHASER
    Structure Refinement REFMAC 5.6.0117
     
    Software
    refinement REFMAC version: 5.6.0117
    model building PHASER