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X-RAY DIFFRACTION
Materials and Methods page
1AM6
  •   Crystallization Hide
    Crystallization Experiments
    pH 8
    Details PROTEIN WAS CRYSTALLIZED FROM 55 - 75% AMMONIUM SULFATE, 50 MM TRIS-HCL, PH = 8.0; INHIBITOR SOAKED INTO XTAL BY GRADUALLY TRANSFERRING INTO 820 MM
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 42.7 α = 90
    b = 41.7 β = 92
    c = 73 γ = 90
     
    Space Group
    Space Group Name:    P 1 21 1
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 298
     
    Diffraction Detector
    Detector IMAGE PLATE
    Type RIGAKU RAXIS
    Details MIRRORS
    Collection Date 1995-12
     
    Diffraction Radiation
    Monochromator NI FILTER
     
    Diffraction Source
    Source ROTATING ANODE
    Type RIGAKU RUH2R
    Wavelength 1.5418
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma(I) 2.0
    Resolution(High) 2.1
    Resolution(Low) 12
    Number Reflections(Observed) 15080
    Percent Possible(Observed) 93.1
    B(Isotropic) From Wilson Plot 16.2
    Redundancy 2.4
     
    High Resolution Shell Details
    Resolution(High) 2.1
    Resolution(Low) 2.15
    Percent Possible(All) 92.0
    Mean I Over Sigma(Observed) 5.0
    R-Sym I(Observed) 0.11
    Redundancy 1.6
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method DIFFERENCE FOURIER
    reflnsShellList 2.0
    Resolution(Low) 6.0
    Cut-off Sigma(F) 2.0
    Number of Reflections(Observed) 14513
    Number of Reflections(R-Free) 1483
    Percent Reflections(Observed) 93.1
    R-Factor(Observed) 0.16
    R-Work 0.16
    R-Free 0.22
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Data Not Available
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 2.0
    Shell Resolution(Low) 2.09
    Number of Reflections(R-Free) 87
    Number of Reflections(R-Work) 933
    R-Factor(R-Work) 0.205
    R-Factor(R-Free) 0.267
    R-Free Error 0.003
    Percent Reflections(Observed) 53.8
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    x_improper_angle_d 1.4
    x_bond_d 0.008
    x_angle_deg 1.6
    x_dihedral_angle_d 25.2
     
    Coordinate Error
    Luzzati Sigma A(Observed) 0.25
    Luzzati Resolution Cutoff(Low) 12.0
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 2057
    Nucleic Acid Atoms 0
    Heterogen Atoms 7
    Solvent Atoms 113
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) MOSFLM
    Data Reduction (data scaling) CCP4
    Structure Solution X-PLOR 3.1
    Structure Refinement X-PLOR 3.1
     
    Software
    refinement X-PLOR version: 3.1
    model building X-PLOR version: 3.1
    data reduction CCP4
    data collection MOSFLM