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X-RAY DIFFRACTION
Materials and Methods page
2ITT
  •   Crystallization Hide
    Crystallization Experiments
    pH 7.5
    Details 40% PEG400, 0.15M NACL, 0.1M HEPES 8.0, pH 7.5
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 145.72 α = 90
    b = 145.72 β = 90
    c = 145.72 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 2005-08-05
     
    Diffraction Radiation
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source SYNCHROTRON
    Type NSLS BEAMLINE X25
    Wavelength 1.1
    Site NSLS
    Beamline X25
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma(I) -3.0
    Resolution(High) 2.73
    Resolution(Low) 50
    Number Reflections(Observed) 13877
    Percent Possible(Observed) 99.8
    R Merge I(Observed) 0.05
    Redundancy 6.1
     
    High Resolution Shell Details
    Resolution(High) 2.73
    Resolution(Low) 2.94
    Percent Possible(All) 99.8
    R Merge I(Observed) 0.37
    Mean I Over Sigma(Observed) 4.3
    Redundancy 4.9
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method MOLECULAR REPLACEMENT
    reflnsShellList 2.73
    Resolution(Low) 24.99
    Number of Reflections(Observed) 12783
    Number of Reflections(R-Free) 987
    Percent Reflections(Observed) 99.6
    R-Factor(Observed) 0.212
    R-Work 0.208
    R-Free 0.262
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Mean Isotropic B Value 56.8
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 2.73
    Shell Resolution(Low) 2.8
    Number of Reflections(R-Free) 74
    Number of Reflections(R-Work) 952
    R-Factor(R-Work) 0.358
    R-Factor(R-Free) 0.474
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    r_scangle_it 3.994
    r_scbond_it 2.387
    r_mcangle_it 2.094
    r_mcbond_it 1.141
    r_nbd_refined 0.244
    r_gen_planes_refined 0.006
    r_chiral_restr 0.116
    r_dihedral_angle_4_deg 17.081
    r_dihedral_angle_3_deg 19.498
    r_dihedral_angle_2_deg 41.052
    r_dihedral_angle_1_deg 6.943
    r_angle_refined_deg 1.809
    r_bond_refined_d 0.018
    r_nbtor_refined 0.327
    r_xyhbond_nbd_refined 0.211
    r_symmetry_vdw_refined 0.193
    r_symmetry_hbond_refined 0.196
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 2413
    Nucleic Acid Atoms 0
    Heterogen Atoms 33
    Solvent Atoms 74
     
     
  •   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