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X-RAY DIFFRACTION
Materials and Methods page
1G9M
  •   Crystallization Hide
    Crystallization Experiments
    Method VAPOR DIFFUSION, HANGING DROP
    pH 6.4
    Temperature 293.0
    Details VAPOUR DIFFUSION CRYSTALLIZATION: 0.5 UL OF PROTEIN (~10MG/ML IN 350 MM NACL, 5 MM TRISCL PH 7.0) + 0.4 UL OF 0.1 M NACITRATE, 0.02 M NAHEPES, 10% ISOPROPANOL, 10.5% MONOMETHYL-PEG 5000, 0.0075% SEAPREP AGAROSE, PH 6.4 OVER A RESERVOIR OF 0.35 M NACL, 0.1 M NACITRATE, 0.02 M NAHEPES, 10% ISOPROPANOL, 10.5% MONOMETHYL-PEG 5000, PH 6.4, VAPOR DIFFUSION, HANGING DROP, temperature 293K
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 71.25 α = 90
    b = 88.11 β = 90
    c = 196.54 γ = 90
     
    Space Group
    Space Group Name:    P 2 2 21
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 100
     
    Diffraction Detector
    Detector IMAGE PLATE
    Type FUJI
    Collection Date 1996-05-25
     
    Diffraction Radiation
    Monochromator silicon crystal
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source SYNCHROTRON
    Type NSLS BEAMLINE X4A
    Wavelength List 0.97953
    Site NSLS
    Beamline X4A
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma (F) 0.0
    Observed Criterion Sigma(I) -0.35
    Resolution(High) 2.2
    Resolution(Low) 20
    Number Reflections(All) 138810
    Number Reflections(Observed) 56183
    Percent Possible(Observed) 87.7
    R Merge I(Observed) 0.145
    B(Isotropic) From Wilson Plot 17.5
    Redundancy 2.47
     
    High Resolution Shell Details
    Resolution(High) 2.2
    Resolution(Low) 2.28
    Percent Possible(All) 66.3
    R Merge I(Observed) 0.382
    Mean I Over Sigma(Observed) 2.1
    R-Sym I(Observed) 0.382
    Redundancy 1.6
    Number Unique Reflections(All) 4207
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method THIS DEPOSIT IS THE REFINEMENT OF THE PREVIOUSLY DETERMINED 1GC1 STRUCTURE
    reflnsShellList 2.2
    Resolution(Low) 20.0
    Cut-off Sigma(I) 0.0
    Cut-off Sigma(F) 0.0
    Number of Reflections(all) 63582
    Number of Reflections(Observed) 55781
    Number of Reflections(R-Free) 3946
    Percent Reflections(Observed) 87.7
    R-Work 0.2676
    R-Free 0.3299
    R-Free Selection Details random
     
    Temperature Factor Modeling
    Isotropic Thermal Model Isotropic
    Mean Isotropic B Value 31.5
    Anisotropic B[1][1] -8.268
    Anisotropic B[1][2] 0.0
    Anisotropic B[1][3] 0.0
    Anisotropic B[2][2] 1.01
    Anisotropic B[2][3] 0.0
    Anisotropic B[3][3] 7.258
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 2.2
    Shell Resolution(Low) 2.21
    Number of Reflections(Observed) 787
    Number of Reflections(R-Free) 54
    Number of Reflections(R-Work) 787
    R-Factor(R-Work) 0.4339
    R-Factor(R-Free) 0.4312
    R-Free Error 0.058
    Percent Reflections(Observed) 66.1
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    c_improper_angle_d 0.87
    c_dihedral_angle_d 26.2
    c_scangle_it 3.13
    c_scbond_it 2.06
    c_mcbond_it 1.7
    c_mcangle_it 2.94
    c_angle_deg 1.1889
    c_bond_d 0.0074
     
    Coordinate Error
    Luzzati ESD(Observed) 0.37
    Luzzati Sigma A(Observed) 0.57
    Luzzati Resolution Cutoff(Low) 5.0
    Luzzati ESD(R-Free Set) 0.47
    Luzzati Sigma A(R-Free Set) 0.7
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 7149
    Nucleic Acid Atoms 0
    Heterogen Atoms 220
    Solvent Atoms 953
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) DENZO
    Data Reduction (data scaling) SCALEPACK
    Structure Refinement CNS
     
    Software
    refinement CNS
    data reduction SCALEPACK
    data collection DENZO