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An Information Portal to 105097 Biological Macromolecular Structures

X-RAY DIFFRACTION
Materials and Methods page
1LA1
  •   Crystallization Hide
    Crystallization Experiments
    Method VAPOR DIFFUSION, HANGING DROP
    pH 8.5
    Temperature 291.0
    Details 0.6 M NaCl, 14 % (w/v) PEG 6000, 100 mM Tris/HCl pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 291K
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 48.62 α = 90
    b = 61.95 β = 90
    c = 75.28 γ = 90
     
    Space Group
    Space Group Name:    P 21 21 21
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 100
     
    Diffraction Detector
    Detector IMAGE PLATE
    Type MARRESEARCH
    Details mirrors
    Collection Date 1999-09-09
     
    Diffraction Radiation
    Monochromator SAGITALLY FOCUSED Si(111)
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source SYNCHROTRON
    Type SRS BEAMLINE PX9.6
    Wavelength List 0.87
    Site SRS
    Beamline PX9.6
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma (F) 1.0
    Resolution(High) 2.06
    Resolution(Low) 20
    Number Reflections(All) 15933
    Number Reflections(Observed) 14319
    Percent Possible(Observed) 98.8
    B(Isotropic) From Wilson Plot 18.4
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method MOLECULAR REPLACEMENT
    reflnsShellList 2.06
    Resolution(Low) 19.5
    Cut-off Sigma(F) 1.0
    Number of Reflections(all) 15933
    Number of Reflections(Observed) 14319
    Number of Reflections(R-Free) 1401
    Percent Reflections(Observed) 98.2
    R-Work 0.197
    R-Free 0.257
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Isotropic Thermal Model RESTRAINED
    Mean Isotropic B Value 30.3
    Anisotropic B[1][1] 2.73
    Anisotropic B[1][2] 0.0
    Anisotropic B[1][3] 0.0
    Anisotropic B[2][2] 4.05
    Anisotropic B[2][3] 0.0
    Anisotropic B[3][3] -6.78
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 2.06
    Shell Resolution(Low) 2.19
    Number of Reflections(R-Free) 199
    Number of Reflections(R-Work) 2082
    R-Factor(R-Work) 0.2491
    R-Factor(R-Free) 0.2842
    R-Free Error 0.014
    Percent Reflections(Observed) 96.2
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    c_improper_angle_d 3.03
    c_dihedral_angle_d 23.9
    c_angle_d 2.4
    c_bond_d 0.011
     
    Coordinate Error
    Luzzati ESD(Observed) 0.21
    Luzzati Sigma A(Observed) 0.11
    Luzzati Resolution Cutoff(Low) 5.0
    Luzzati ESD(R-Free Set) 0.2
    Luzzati Sigma A(R-Free Set) 0.08
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 1448
    Nucleic Acid Atoms 0
    Heterogen Atoms 0
    Solvent Atoms 274
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) MAR
    Data Reduction (data scaling) SCALEPACK
    Structure Solution AMORE
    Structure Refinement CNS 1.0
     
    Software
    refinement CNS version: 1.0
    model building AMoRE
    data reduction SCALEPACK
    data collection MAR