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X-RAY DIFFRACTION
Materials and Methods page
2ITQ
  •   Crystallization Hide
    Crystallization Experiments
    pH 7.5
    Details 1.2M KNA TARTRATE, 0.1M HEPES 7.5
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 145.29 α = 90
    b = 145.29 β = 90
    c = 145.29 γ = 90
     
    Space Group
    Space Group Name:    I 2 3
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 100
     
    Diffraction Detector
    Detector CCD (QUANTUM-4)
    Type ADSC
    Collection Date 2005-09-18
     
    Diffraction Radiation
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source SYNCHROTRON
    Type NSLS BEAMLINE X29A
    Wavelength 1.1
    Site NSLS
    Beamline X29A
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma(I) -3.0
    Resolution(High) 2.68
    Resolution(Low) 50
    Number Reflections(Observed) 14312
    Percent Possible(Observed) 98.8
    R Merge I(Observed) 0.05
    Redundancy 6.8
     
    High Resolution Shell Details
    Resolution(High) 2.68
    Resolution(Low) 2.89
    Percent Possible(All) 94.2
    R Merge I(Observed) 0.38
    Mean I Over Sigma(Observed) 2.8
    Redundancy 5.3
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method MOLECULAR REPLACEMENT
    reflnsShellList 2.68
    Resolution(Low) 24.91
    Number of Reflections(Observed) 13557
    Number of Reflections(R-Free) 719
    Percent Reflections(Observed) 98.8
    R-Factor(Observed) 0.2
    R-Work 0.197
    R-Free 0.263
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Mean Isotropic B Value 61.92
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 2.68
    Shell Resolution(Low) 2.75
    Number of Reflections(R-Free) 43
    Number of Reflections(R-Work) 869
    R-Factor(R-Work) 0.308
    R-Factor(R-Free) 0.323
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    r_scangle_it 4.238
    r_scbond_it 2.615
    r_mcangle_it 2.125
    r_mcbond_it 1.126
    r_nbd_refined 0.257
    r_gen_planes_refined 0.007
    r_chiral_restr 0.114
    r_dihedral_angle_4_deg 20.039
    r_dihedral_angle_3_deg 20.366
    r_dihedral_angle_2_deg 38.024
    r_dihedral_angle_1_deg 6.745
    r_angle_refined_deg 1.868
    r_bond_refined_d 0.019
    r_nbtor_refined 0.328
    r_xyhbond_nbd_refined 0.193
    r_symmetry_vdw_refined 0.231
    r_symmetry_hbond_refined 0.176
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 2400
    Nucleic Acid Atoms 0
    Heterogen Atoms 35
    Solvent Atoms 57
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) HKL2000
    Data Reduction (data scaling) HKL2000
    Structure Solution PHASER
    Structure Refinement REFMAC 5.2.0019
     
    Software
    refinement REFMAC version: 5.2.0019
    model building PHASER