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X-RAY DIFFRACTION
Materials and Methods page
1A01
  •   Crystallization Hide
    Crystallization Experiments
    pH 6.5
    Details 2.3 M AMMONIUM SULFATE 0.3 M AMMONIUM PHOSPHATE PH 6.5 10 MM FERROUS CITRATE
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 63.4 α = 90
    b = 83.6 β = 99.3
    c = 53.8 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 XUONG-HAMLIN MULTIWIRE
    Collection Date 1992-10-02
     
    Diffraction Radiation
    Monochromator GRAPHITE(002)
     
    Diffraction Source
    Source ROTATING ANODE
    Type RIGAKU RUH2R
    Wavelength 1.5418
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma(I) 0.0
    Resolution(High) 1.8
    Resolution(Low) 25
    Number Reflections(Observed) 49388
    Percent Possible(Observed) 96.3
    R Merge I(Observed) 0.036
    Redundancy 9.3
     
    High Resolution Shell Details
    Resolution(High) 1.8
    Resolution(Low) 1.94
    Percent Possible(All) 90.8
    R Merge I(Observed) 0.182
    Mean I Over Sigma(Observed) 3.45
    R-Sym I(Observed) 0.182
    Redundancy 5.5
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method ISOMORPHOUS WITH DEOXYHEMOGLOBIN A.
    reflnsShellList 1.8
    Resolution(Low) 8.0
    Cut-off Sigma(F) 2.0
    Number of Reflections(all) 44641
    Number of Reflections(Observed) 44030
    Number of Reflections(R-Free) 4411
    Percent Reflections(Observed) 96.3
    R-Work 0.169
    R-Free 0.223
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Mean Isotropic B Value 20.2
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    p_transverse_tor 32.7
    p_staggered_tor 20.4
    p_planar_tor 2.7
    p_xyhbond_nbd 0.158
    p_multtor_nbd 0.158
    p_bond_d 0.012
    p_angle_d 0.029
    p_planar_d 0.047
    p_mcbond_it 2.1
    p_mcangle_it 2.8
    p_scbond_it 7.6
    p_scangle_it 10.8
    p_plane_restr 0.012
    p_chiral_restr 0.135
    p_singtor_nbd 0.17
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 4368
    Nucleic Acid Atoms 0
    Heterogen Atoms 172
    Solvent Atoms 198
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) SDMS
    Data Reduction (data scaling) SDMS
    Structure Solution PROLSQ
    Structure Refinement PROLSQ
     
    Software
    refinement PROLSQ
    model building PROLSQ