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X-RAY DIFFRACTION
Materials and Methods page
1SD3
  •   Crystallization Hide
    Crystallization Experiments
    Method VAPOR DIFFUSION, HANGING DROP
    pH 4.9
    Temperature 293.0
    Details 14% PEG 3350, 10mM malonate, 10mM BME, 20mM NaCl, 2mM Citrate, 1mM EDTA, 4.5mM 2S,4R-4-methylglutamate, pH 4.9, VAPOR DIFFUSION, HANGING DROP, temperature 293K
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 57.74 α = 90
    b = 91.25 β = 90
    c = 105.55 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 CCD
    Type ADSC QUANTUM 4
    Collection Date 2003-06-06
     
    Diffraction Radiation
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source SYNCHROTRON
    Type NSLS BEAMLINE X9B
    Wavelength List 0.97178
    Site NSLS
    Beamline X9B
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma (F) 1.0
    Observed Criterion Sigma(I) 1.0
    Resolution(High) 1.8
    Resolution(Low) 30
    Number Reflections(All) 50668
    Number Reflections(Observed) 50668
    Percent Possible(Observed) 99.9
    R Merge I(Observed) 0.058
    B(Isotropic) From Wilson Plot 11.4
    Redundancy 3.7
     
    High Resolution Shell Details
    Resolution(High) 1.8
    Resolution(Low) 1.86
    Percent Possible(All) 100.0
    R Merge I(Observed) 0.358
    Mean I Over Sigma(Observed) 3.86
    Redundancy 3.7
    Number Unique Reflections(All) 5148
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method FOURIER SYNTHESIS
    reflnsShellList 1.8
    Resolution(Low) 24.41
    Cut-off Sigma(F) 0.0
    Number of Reflections(all) 48357
    Number of Reflections(Observed) 48357
    Number of Reflections(R-Free) 2425
    Percent Reflections(Observed) 92.4
    R-Factor(All) 0.225
    R-Factor(Observed) 0.223
    R-Work 0.223
    R-Free 0.256
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Isotropic Thermal Model RESTRAINED
    Mean Isotropic B Value 17.5
    Anisotropic B[1][1] -4.57
    Anisotropic B[1][2] 0.0
    Anisotropic B[1][3] 0.0
    Anisotropic B[2][2] 5.86
    Anisotropic B[2][3] 0.0
    Anisotropic B[3][3] -1.29
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 1.8
    Shell Resolution(Low) 1.86
    Number of Reflections(R-Free) 195
    Number of Reflections(R-Work) 3798
    R-Factor(R-Work) 0.278
    R-Factor(R-Free) 0.303
    R-Free Error 0.022
    Percent Reflections(Observed) 77.1
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    c_improper_angle_d 0.79
    c_dihedral_angle_d 21.1
    c_angle_deg 1.2
    c_bond_d 0.005
     
    Coordinate Error
    Luzzati ESD(Observed) 0.23
    Luzzati Sigma A(Observed) 0.16
    Luzzati Resolution Cutoff(Low) 5.0
    Luzzati ESD(R-Free Set) 0.27
    Luzzati Sigma A(R-Free Set) 0.21
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 4024
    Nucleic Acid Atoms 0
    Heterogen Atoms 22
    Solvent Atoms 424
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) HKL-2000
    Data Reduction (data scaling) SCALEPACK
    Structure Solution CNS
    Structure Refinement CNS 1.1
     
    Software
    refinement CNS version: 1.1