POP-OUT | CLOSE
 
X-RAY DIFFRACTION
Materials and Methods page
1C1S
  •   Crystallization Hide
    Crystallization Experiments
    pH 6.1
    Details TRYPSIN-BENZAMIDINE, P3(1) 2 1 WERE GROWN BY VAPOR DIFFUSION, AS DESCRIBED FOR P2(1) 2(1) 2(1) (LARGE CELL) (MANGEL, ET AL., BIOCHEMISTRY 29, 8351-8357, 1990) THE CRYSTAL WAS SOAKED IN A SOLUTION OF 1.25 M NA2PO4 . 7 H2O, 1.75 M KH2PO4, 2.0 % DMSO, SATURATED IN BABIM OVER A PERIOD OF 5 DAYS WITH SEVERAL REPLACEMENTS OF THE SOAKING SOLUTION., pH 6.1
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 55.35 α = 90
    b = 55.35 β = 90
    c = 109.8 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 IV++
    Details MSC MIRRORS
    Collection Date 1998-12-16
     
    Diffraction Radiation
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source ROTATING ANODE
    Wavelength 1.5418
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma(I) 0.9
    Resolution(High) 1.33
    Resolution(Low) 36.6
    Number Reflections(Observed) 23706
    Percent Possible(Observed) 67.0
    R Merge I(Observed) 0.112
    Redundancy 2.4
     
    High Resolution Shell Details
    Resolution(High) 1.63
    Resolution(Low) 1.7
    Percent Possible(All) 41.8
    R Merge I(Observed) 0.282
    Mean I Over Sigma(Observed) 1.5
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method DIFFERENCE FOURIER PLUS REFINEMENT
    reflnsShellList 1.63
    Resolution(Low) 7.5
    Cut-off Sigma(F) 2.0
    Number of Reflections(Observed) 16621
    Number of Reflections(R-Free) 1657
    Percent Reflections(Observed) 67.0
    R-Factor(Observed) 0.185
    R-Work 0.185
    R-Free 0.206
     
    Temperature Factor Modeling
    Data Not Available
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 1.63
    Shell Resolution(Low) 1.7
    Number of Reflections(R-Free) 123
    Number of Reflections(R-Work) 1142
    R-Factor(R-Work) 0.367
    R-Factor(R-Free) 0.411
    Percent Reflections(Observed) 41.8
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    x_improper_angle_d 0.57
    x_bond_d 0.02
    x_angle_deg 3.9
    x_dihedral_angle_d 25.9
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 1629
    Nucleic Acid Atoms 0
    Heterogen Atoms 30
    Solvent Atoms 279
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) BIOTEX (MSC)
    Data Reduction (data scaling) BIOTEX
    Structure Solution X-PLOR, QUANTA, INSIGHTII
    Structure Refinement X-PLOR 3.1
     
    Software
    refinement X-PLOR version: 3.1
    model building INSIGHTII
    model building QUANTA
    model building X-PLOR
    data reduction BIOTEX version: (MSC)
    data collection BIOTEX version: (MSC)