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X-RAY DIFFRACTION
Materials and Methods page
1IEE
  •   Crystallization Hide
    Crystallization Experiments
    Method Counter-Diffusion in modified APCF reactors
    pH 4.5
    Temperature 293.0
    Details CRYSTALLISATION TOOK PLACE IN THE EUROPEAN SPACE AGENCY (ESA) ADVANCED PROTEIN CRYSTALLISATION FACILITY (APCF) ONBOARD THE NASA SPACE SHUTTLE'S STS-95 MISSION. A NEW APCF REACTOR WITH A LONG PROTEIN CHAMBER (67 MM) WAS DESIGNED TO PERFORM CRYSTALLIZATION USING THE COUNTER-DIFFUSION METHOD UNDER MICROGRAVITY CONDITIONS. THE PROTEIN CHAMBER WAS FILLED WITH A SOLUTION OF 99 MG/ML OF HEN EGG WHITE LYSOZYME (SUPPLIED BY SEIKAGAKU, BATCH NUMBER 100940, LOT E96302) DISSOLVED IN 0.05 M ACETATE BUFFER (PH 4.5). THE SALT CHAMBER CONTAINED 20% W/V NACL AND 0.05 M ACETATE BUFFER (PH 4.5). THE ROTATORY PLUG CONNECTING THE PROTEIN AND THE SALT CHAMBERS WAS FILLED WITH 10% W/V NACL, 0.5% W/V AGAROSE GEL AND 0.05 M ACETATE BUFFER. CRYSTALLISATION TOOK PLACE IN MICROGRAVITY AT 20+/-0.1 C., Counter-Diffusion in modified APCF reactors, temperature 293K
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 77.06 α = 90
    b = 77.06 β = 90
    c = 37.22 γ = 90
     
    Space Group
    Space Group Name:    P 43 21 2
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 110
    Diffrn ID 2
    Data Collection Temperature 110
     
    Diffraction Detector
    Detector IMAGE PLATE
    Type MARRESEARCH
    Collection Date 1998-12-10
    Detector IMAGE PLATE
    Type MARRESEARCH
    Collection Date 1998-12-10
     
    Diffraction Radiation
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source SYNCHROTRON
    Type EMBL/DESY, HAMBURG BEAMLINE X11
    Wavelength List 0.9057
    Site EMBL/DESY, HAMBURG
    Beamline X11
    Source SYNCHROTRON
    Type EMBL/DESY, HAMBURG BEAMLINE BW7B
    Wavelength List 0.8337
    Site EMBL/DESY, HAMBURG
    Beamline BW7B
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma (F) 0.0
    Observed Criterion Sigma(I) -3.0
    Resolution(High) 0.94
    Resolution(Low) 31
    Number Reflections(All) 402070
    Number Reflections(Observed) 72390
    Percent Possible(Observed) 98.9
    R Merge I(Observed) 0.052
    B(Isotropic) From Wilson Plot 8.7
    Redundancy 5.5
     
    High Resolution Shell Details
    Resolution(High) 0.94
    Resolution(Low) 0.96
    Percent Possible(All) 88.6
    R Merge I(Observed) 0.329
    Mean I Over Sigma(Observed) 2.6
    Number Unique Reflections(All) 3912
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method MOLECULAR REPLACEMENT
    reflnsShellList 0.94
    Resolution(Low) 31.0
    Cut-off Sigma(I) -3.0
    Cut-off Sigma(F) 0.0
    Number of Reflections(all) 72390
    Number of Reflections(Observed) 72390
    Number of Reflections(R-Free) 3655
    Percent Reflections(Observed) 98.9
    R-Factor(All) 0.1226
    R-Factor(Observed) 0.1226
    R-Work 0.1233
    R-Free 0.1509
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Isotropic Thermal Model ANISOTROPIC
    Mean Isotropic B Value 14.4
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 0.94
    Shell Resolution(Low) 0.96
    Number of Reflections(Observed) 3912
    R-Factor(R-Work) 0.3
    Percent Reflections(Observed) 88.6
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 0.96
    Shell Resolution(Low) 0.97
    Number of Reflections(Observed) 2052
    R-Factor(R-Work) 0.222
    Percent Reflections(Observed) 100.0
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 0.97
    Shell Resolution(Low) 0.99
    Number of Reflections(Observed) 3918
    R-Factor(R-Work) 0.184
    Percent Reflections(Observed) 100.0
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 0.99
    Shell Resolution(Low) 1.01
    Number of Reflections(Observed) 3594
    R-Factor(R-Work) 0.167
    Percent Reflections(Observed) 99.9
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 1.01
    Shell Resolution(Low) 1.03
    Number of Reflections(Observed) 3332
    R-Factor(R-Work) 0.15
    Percent Reflections(Observed) 100.0
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 1.03
    Shell Resolution(Low) 31.0
    Number of Reflections(Observed) 55582
    R-Factor(R-Work) 0.118
    Percent Reflections(Observed) 99.5
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    s_approx_iso_adps 0.072
    s_similar_adp_cmpnt 0.048
    s_rigid_bond_adp_cmpnt 0.006
    s_anti_bump_dis_restr 0.067
    s_similar_dist 0.0
    s_non_zero_chiral_vol 0.115
    s_zero_chiral_vol 0.104
    s_from_restr_planes 0.031
    s_angle_d 0.037
    s_bond_d 0.016
     
    Coordinate Error
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 1001
    Nucleic Acid Atoms 0
    Heterogen Atoms 6
    Solvent Atoms 233
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) DENZO
    Data Reduction (data scaling) SCALEPACK
    Structure Solution CNS
    Structure Refinement SHELXL-97
     
    Software
    refinement SHELXL-97
    model building CNS
    data reduction SCALEPACK
    data collection DENZO