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X-RAY DIFFRACTION
Materials and Methods page
1CKP
  •   Crystallization Hide
    Crystallization Experiments
    pH 7.4
    Details pH 7.4
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 53.55 α = 90
    b = 71.35 β = 90
    c = 72 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 RIGAKU RAXIS II
    Details MIRROR
    Collection Date 1996-02-15
     
    Diffraction Radiation
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source ROTATING ANODE
    Type RIGAKU
    Wavelength 1.5418
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma(I) 0.0
    Resolution(High) 2.05
    Resolution(Low) 32
    Number Reflections(Observed) 17655
    Percent Possible(Observed) 98.7
    R Merge I(Observed) 0.055
    Redundancy 3.0
     
    High Resolution Shell Details
    Resolution(High) 2.05
    Resolution(Low) 2.11
    Percent Possible(All) 91.6
    R Merge I(Observed) 0.185
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method OTHER
    reflnsShellList 2.05
    Resolution(Low) 32.0
    Cut-off Sigma(F) 2.0
    Number of Reflections(Observed) 17381
    Number of Reflections(R-Free) 1418
    Percent Reflections(Observed) 97.2
    R-Factor(Observed) 0.192
    R-Work 0.192
    R-Free 0.26
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Isotropic Thermal Model RESTRAINED
    Mean Isotropic B Value 30.4
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    x_scangle_it 6.0
    x_scbond_it 3.6
    x_mcangle_it 4.0
    x_mcbond_it 2.3
    x_improper_angle_d 1.14
    x_bond_d 0.007
    x_angle_deg 1.3
    x_dihedral_angle_d 23.8
     
    Coordinate Error
    Luzzati ESD(Observed) 0.23
    Luzzati Sigma A(Observed) 0.23
    Luzzati Resolution Cutoff(Low) 5.0
    Luzzati ESD(R-Free Set) 0.31
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 2247
    Nucleic Acid Atoms 0
    Heterogen Atoms 22
    Solvent Atoms 91
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) DENZO
    Data Reduction (data scaling) SCALEPACK
    Structure Solution CCP4
    Structure Refinement X-PLOR 3.851
     
    Software
    refinement X-PLOR version: 3.851
    model building CCP4