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An Information Portal to 105097 Biological Macromolecular Structures

X-RAY DIFFRACTION
Materials and Methods page
1AAY
  •   Crystallization Hide
    Crystallization Experiments
    Method VAPOR DIFFUSION, HANGING DROP
    pH 8
    Details 2.5-5% PEG 400; 500-700MM NACL; 25MM BIS-TRIS PROPANE, PH 8.0, VAPOR DIFFUSION, HANGING DROP
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 45.4 α = 90
    b = 56.2 β = 90
    c = 130.8 γ = 90
     
    Space Group
    Space Group Name:    C 2 2 21
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 295
     
    Diffraction Detector
    Detector IMAGE PLATE
    Type RIGAKU RAXIS IIC
    Details YALE MIRRORS
    Collection Date 1994-08-01
     
    Diffraction Radiation
     
    Diffraction Source
    Source ROTATING ANODE
    Type RIGAKU RU200
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma (F) -2.0
    Observed Criterion Sigma(I) -2.0
    Resolution(High) 1.6
    Resolution(Low) 20
    Number Reflections(Observed) 22749
    Percent Possible(Observed) 96.6
    R Merge I(Observed) 0.062
    Redundancy 6.5
     
    High Resolution Shell Details
    Resolution(High) 1.6
    Resolution(Low) 1.66
    Percent Possible(All) 92.8
    R Merge I(Observed) 0.534
    Mean I Over Sigma(Observed) 2.0
    R-Sym I(Observed) 0.223
    Redundancy 4.0
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method MOLECULAR REPLACEMENT
    reflnsShellList 1.6
    Resolution(Low) 6.0
    Cut-off Sigma(F) 2.0
    Number of Reflections(Observed) 19207
    Number of Reflections(R-Free) 2312
    Percent Reflections(Observed) 87.0
    R-Factor(All) 0.203
    R-Factor(Observed) 0.195
    R-Work 0.195
    R-Free 0.242
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Isotropic Thermal Model RESTRAINED INDIVIDUAL
    Mean Isotropic B Value 30.0
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 1.6
    Shell Resolution(Low) 1.67
    Number of Reflections(R-Free) 242
    Number of Reflections(R-Work) 1674
    R-Factor(R-Work) 0.266
    R-Factor(R-Free) 0.286
    Percent Reflections(Observed) 70.1
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    x_scangle_it 3.3
    x_scbond_it 2.03
    x_mcangle_it 2.38
    x_mcbond_it 1.46
    x_improper_angle_d_na 0.6
    x_improper_angle_d 1.23
    x_bond_d 0.007
    x_bond_d_na 0.009
    x_angle_deg 1.29
    x_angle_deg_na 3.02
    x_dihedral_angle_d 22.8
    x_dihedral_angle_d_na 29.8
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 712
    Nucleic Acid Atoms 445
    Heterogen Atoms 3
    Solvent Atoms 148
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) DENZO
    Data Reduction (data scaling) SCALEPACK
    Structure Solution X-PLOR
    Structure Refinement X-PLOR
     
    Software
    refinement X-PLOR
    model building X-PLOR