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X-RAY DIFFRACTION
Materials and Methods page
1SMT
  •   Crystallization Hide
    Crystallization Experiments
    pH 6.1
    Temperature 296.0
    Details PROTEIN WAS CRYSTALLIZED FROM 40% SATURATED AMMONIUM SULFATE WITH 100 MM MES BUFFER, PH 6.1, AT 296 K.
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 37.6 α = 90
    b = 70.9 β = 95.7
    c = 44 γ = 90
     
    Space Group
    Space Group Name:    P 1 21 1
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 295
     
    Diffraction Detector
    Detector AREA DETECTOR
    Type SIEMENS
    Collection Date 1996-11
     
    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) -3.0
    Resolution(High) 2.2
    Resolution(Low) 38
    Number Reflections(Observed) 10563
    Percent Possible(Observed) 90.0
    B(Isotropic) From Wilson Plot 13.9
    Redundancy 1.8
     
    High Resolution Shell Details
    Resolution(High) 2.2
    Resolution(Low) 2.34
    Percent Possible(All) 69.0
    Mean I Over Sigma(Observed) 3.0
    R-Sym I(Observed) 0.15
    Redundancy 1.2
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method MULTIPLE ISOMORPHOUS REPLACEMENT
    reflnsShellList 2.2
    Resolution(Low) 100.0
    Cut-off Sigma(F) 0.0
    Number of Reflections(Observed) 10278
    Number of Reflections(R-Free) 532
    Percent Reflections(Observed) 87.6
    R-Factor(Observed) 0.217
    R-Work 0.217
    R-Free 0.25
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Isotropic Thermal Model RESTRAINED
    Mean Isotropic B Value 23.3
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 2.2
    Shell Resolution(Low) 2.34
    Number of Reflections(R-Free) 53
    Number of Reflections(R-Work) 1197
    R-Factor(R-Work) 0.283
    R-Factor(R-Free) 0.267
    R-Free Error 0.037
    Percent Reflections(Observed) 64.5
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    x_scangle_it 3.83
    x_scbond_it 2.47
    x_mcangle_it 2.23
    x_mcbond_it 1.38
    x_improper_angle_d 1.05
    x_bond_d 0.008
    x_angle_deg 1.2
    x_dihedral_angle_d 19.9
     
    Coordinate Error
    Luzzati ESD(Observed) 0.27
    Luzzati Sigma A(Observed) 0.29
    Luzzati Resolution Cutoff(Low) 5.0
    Luzzati ESD(R-Free Set) 0.32
    Luzzati Sigma A(R-Free Set) 0.24
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 1574
    Nucleic Acid Atoms 0
    Heterogen Atoms 0
    Solvent Atoms 0
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) XENGEN
    Data Reduction (data scaling) XENGEN
    Structure Solution X-PLOR 3.851
    Structure Refinement X-PLOR 3.851
     
    Software
    refinement X-PLOR version: 3.851
    model building X-PLOR version: 3.851