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X-RAY DIFFRACTION
Materials and Methods page
1HWK
  •   Crystallization Hide
    Crystallization Experiments
    Method microseeding
    pH 7.5
    Temperature 294.0
    Details PEG 4000, ammonium acetate, glycerol, DTT, Hepes, Microseeding, pH 7.5 at 294 K, microseeding
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 74.6 α = 90
    b = 172.72 β = 117.73
    c = 80.01 γ = 90
     
    Space Group
    Space Group Name:    P 1 21 1
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 123
     
    Diffraction Detector
    Detector CCD
    Type ADSC QUANTUM 4
    Details mirror
    Collection Date 2000-07-01
     
    Diffraction Radiation
    Monochromator horizontally bent Si (111)
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source SYNCHROTRON
    Type CHESS BEAMLINE F1
    Wavelength List 0.942
    Site CHESS
    Beamline F1
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma(I) -3.0
    Resolution(High) 2.21
    Resolution(Low) 100
    Number Reflections(All) 87343
    Number Reflections(Observed) 87343
    Percent Possible(Observed) 98.6
    R Merge I(Observed) 0.038
    B(Isotropic) From Wilson Plot 32.8
    Redundancy 3.7
     
    High Resolution Shell Details
    Resolution(High) 2.21
    Resolution(Low) 2.25
    Percent Possible(All) 84.3
    R Merge I(Observed) 0.309
    Mean I Over Sigma(Observed) 3.3
    Redundancy 2.8
    Number Unique Reflections(All) 3712
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method difference fourier
    reflnsShellList 2.22
    Resolution(Low) 43.4
    Cut-off Sigma(I) -3.0
    Number of Reflections(all) 86963
    Number of Reflections(Observed) 86963
    Number of Reflections(R-Free) 2002
    Percent Reflections(Observed) 98.6
    R-Work 0.212
    R-Free 0.235
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Isotropic Thermal Model RESTRAINED
    Mean Isotropic B Value 52.7
    Anisotropic B[1][1] 3.91
    Anisotropic B[1][2] 0.0
    Anisotropic B[1][3] 12.64
    Anisotropic B[2][2] -5.87
    Anisotropic B[2][3] 0.0
    Anisotropic B[3][3] 1.95
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 2.22
    Shell Resolution(Low) 2.36
    Number of Reflections(R-Free) 340
    Number of Reflections(R-Work) 13565
    R-Factor(R-Work) 0.325
    R-Factor(R-Free) 0.366
    R-Free Error 0.02
    Percent Reflections(Observed) 95.0
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    c_scangle_it 2.72
    c_scbond_it 1.85
    c_mcangle_it 1.85
    c_mcbond_it 1.12
    c_improper_angle_d 1.42
    c_dihedral_angle_d 22.9
    c_angle_deg 1.4
    c_bond_d 0.011
     
    Coordinate Error
    Luzzati ESD(Observed) 0.29
    Luzzati Sigma A(Observed) 0.35
    Luzzati Resolution Cutoff(Low) 5.0
    Luzzati ESD(R-Free Set) 0.34
    Luzzati Sigma A(R-Free Set) 0.45
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 11772
    Nucleic Acid Atoms 0
    Heterogen Atoms 299
    Solvent Atoms 225
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) DENZO
    Data Reduction (data scaling) SCALEPACK
    Structure Solution CNS
    Structure Refinement CNS 1.0
     
    Software
    refinement CNS version: 1.0
    model building CNS