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X-RAY DIFFRACTION
Materials and Methods page
1XEK
  •   Crystallization Hide
    Crystallization Experiments
    pH 4.6
    Details pH 4.6
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 25.32 α = 90
    b = 54.73 β = 111.15
    c = 30.68 γ = 90
     
    Space Group
    Space Group Name:    P 1 21 1
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 293
     
    Diffraction Detector
    Detector AREA DETECTOR
    Type SIEMENS
    Collection Date 1993-12-03
     
    Diffraction Radiation
     
    Diffraction Source
    Wavelength 1.5418
     
     
  •   Refinement Data Hide
    Reflection Details
    Resolution(High) 2.3
    Resolution(Low) 10
    Number Reflections(Observed) 3175
    Percent Possible(Observed) 86.02
    R Merge I(Observed) 0.041
    Redundancy 1.87
     
    High Resolution Shell Details
    Resolution(High) 2.265
    Resolution(Low) 2.362
    Percent Possible(All) 32.4
    R Merge I(Observed) 0.247
    Mean I Over Sigma(Observed) 3.146
    Redundancy 1.13
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method MOLECULAR REPLACEMENT
    reflnsShellList 2.3
    Resolution(Low) 10.0
    Cut-off Sigma(F) 4.0
    Number of Reflections(Observed) 2705
    Percent Reflections(Observed) 73.29
    R-Work 0.197
    R-Free 0.304
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Mean Isotropic B Value 29.12
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    p_transverse_tor 28.1
    p_staggered_tor 26.3
    p_planar_tor 2.5
    p_xyhbond_nbd 0.287
    p_multtor_nbd 0.37
    p_bond_d 0.012
    p_angle_d 0.047
    p_planar_d 0.048
    p_mcbond_it 1.103
    p_mcangle_it 1.91
    p_scbond_it 3.9
    p_scangle_it 4.7
    p_plane_restr 0.012
    p_chiral_restr 0.125
    p_singtor_nbd 0.239
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 1001
    Nucleic Acid Atoms 0
    Heterogen Atoms 0
    Solvent Atoms 46
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) XENGEN
    Data Reduction (data scaling) XENGEN
    Structure Solution X-PLOR
    Structure Refinement PROLSQ, X-PLOR
     
    Software
    refinement X-PLOR
    refinement PROLSQ
    model building X-PLOR
    data reduction XENGEN
    data collection XENGEN