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X-RAY DIFFRACTION
Materials and Methods page
1HF4
  •   Crystallization Hide
    Crystallization Experiments
    pH 4.5
    Details CRYSTALS OF NITRATE-LYSOZYME WERE GROWN UNDER A MICRO GRAVITY ENVIRONMENT DURING THE USML-2 MISSION LAUNCHED ON OCTOBER 1995 (SHUTTLE COLUMBIA). THE CRYSTALLIZATION SETUP WAS THE APCF DEVELOPPED BY EUROPEAN SPACE AGENCY. PROTEIN CONCENTRATION 10 MG/ML IN 50 MM SODIUM ACETATE BUFFER AT PH 4.5. GRADIENT CONCENTRATION APPLIED FROM 0 TO FINAL 290 MM AT 293K
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 27.94 α = 90
    b = 62.73 β = 90.76
    c = 60.25 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 IMAGE PLATE
    Type MARRESEARCH
    Collection Date 1996-01-15
     
    Diffraction Radiation
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source SYNCHROTRON
    Type LURE BEAMLINE DW32
    Wavelength 0.97
    Site LURE
    Beamline DW32
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma(I) 0.0
    Resolution(High) 1.45
    Resolution(Low) 10
    Number Reflections(Observed) 35206
    Percent Possible(Observed) 95.5
    R Merge I(Observed) 0.12
    B(Isotropic) From Wilson Plot 13.7
    Redundancy 7.7
     
    High Resolution Shell Details
    Resolution(High) 1.45
    Resolution(Low) 1.49
    Percent Possible(All) 87.0
    R Merge I(Observed) 0.16
    Mean I Over Sigma(Observed) 4.5
    Redundancy 3.6
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method MOLECULAR REPLACEMENT
    reflnsShellList 1.45
    Resolution(Low) 6.0
    Cut-off Sigma(F) 0.0
    Number of Reflections(Observed) 31225
    Number of Reflections(R-Free) 3499
    Percent Reflections(Observed) 95.5
    R-Factor(Observed) 0.215
    R-Work 0.215
    R-Free 0.256
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Isotropic Thermal Model RESTRAINED
    Mean Isotropic B Value 16.4
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 1.45
    Shell Resolution(Low) 1.52
    Number of Reflections(R-Free) 403
    Number of Reflections(R-Work) 3549
    R-Factor(R-Work) 0.34
    R-Factor(R-Free) 0.39
    Percent Reflections(Observed) 87.0
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    x_scangle_it 3.7
    x_scbond_it 3.21
    x_mcangle_it 2.73
    x_mcbond_it 2.5
    x_improper_angle_d 1.14
    x_bond_d 0.006
    x_angle_deg 1.35
    x_dihedral_angle_d 23.8
     
    Coordinate Error
    Luzzati ESD(Observed) 0.19
    Luzzati Resolution Cutoff(Low) 5.0
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 2002
    Nucleic Acid Atoms 0
    Heterogen Atoms 34
    Solvent Atoms 251
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) MOSFLM
    Data Reduction (data scaling) CCP4 (AGROVATA, ROTAVATA)
    Structure Solution X-PLOR 3.853
    Structure Refinement X-PLOR 3.853
     
    Software
    refinement X-PLOR version: 3.853
    model building X-PLOR version: 3.853