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X-RAY DIFFRACTION
Materials and Methods page
2GAB
  •   Crystallization Hide
    Crystallization Experiments
    Method VAPOR DIFFUSION, HANGING DROP
    pH 7
    Temperature 298.0
    Details CRYSTALLIZATION CONDITIONS: CRYSTALS OF RECOMBINANT WT TTR WERE OBTAINED FROM PROTEIN SOLUTIONS AT 5 MG/ML (IN 100 MM KCL, 100 MM PHOSPHATE [PH 7.4], 1 M AMMONIUM SULFATE) EQUILIBRATED AGAINST 2 M AMMONIUM SULFATE IN HANGING DROP EXPERIMENTS. THE TTR LIGAND COMPLEXES WERE PREPARED FROM CRYSTALS SOAKED FOR 2 WEEKS WITH A 10-FOLD MOLAR EXCESS , PH 7.00, VAPOR DIFFUSION, HANGING DROP, TEMPERATURE 298K , VAPOR DIFFUSION, HANGING DROP
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 43.46 α = 90
    b = 86.2 β = 90
    c = 65.49 γ = 90
     
    Space Group
    Space Group Name:    P 21 21 2
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 120
     
    Diffraction Detector
    Detector IMAGE PLATE
    Type MAC Science DIP-2030
    Collection Date 1999-07-14
     
    Diffraction Radiation
    Monochromator MIRRORS
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source ROTATING ANODE
    Type RIGAKU
    Wavelength 1.5418
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma (F) 0.0
    Observed Criterion Sigma(I) 0.0
    Resolution(High) 1.85
    Resolution(Low) 65.51
    Number Reflections(All) 19133
    Number Reflections(Observed) 19133
    Percent Possible(Observed) 89.2
    R Merge I(Observed) 0.03
     
    High Resolution Shell Details
    Resolution(High) 1.8
    Resolution(Low) 1.86
    Percent Possible(All) 92.35
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method MOLECULAR REPLACEMENT
    reflnsShellList 1.85
    Resolution(Low) 65.51
    Cut-off Sigma(F) 0.0
    Number of Reflections(all) 19133
    Number of Reflections(Observed) 18145
    Number of Reflections(R-Free) 988
    Percent Reflections(Observed) 88.22
    R-Factor(All) 0.21147
    R-Factor(Observed) 0.21147
    R-Work 0.21008
    R-Free 0.23769
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Mean Isotropic B Value 23.974
    Anisotropic B[1][1] 0.12
    Anisotropic B[1][2] 0.0
    Anisotropic B[1][3] 0.0
    Anisotropic B[2][2] 0.03
    Anisotropic B[2][3] 0.0
    Anisotropic B[3][3] -0.15
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 1.85
    Shell Resolution(Low) 1.898
    Number of Reflections(R-Free) 85
    Number of Reflections(R-Work) 1364
    R-Factor(R-Work) 0.259
    R-Factor(R-Free) 0.381
    Percent Reflections(Observed) 92.35
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    r_scangle_it 5.293
    r_scbond_it 3.26
    r_mcangle_it 2.105
    r_mcbond_it 1.101
    r_nbd_refined 0.194
    r_gen_planes_refined 0.065
    r_chiral_restr 0.107
    r_dihedral_angle_4_deg 26.403
    r_dihedral_angle_3_deg 14.456
    r_dihedral_angle_2_deg 33.822
    r_dihedral_angle_1_deg 5.676
    r_angle_refined_deg 2.272
    r_bond_refined_d 0.016
    r_nbtor_refined 0.311
    r_xyhbond_nbd_refined 0.109
    r_symmetry_vdw_refined 0.179
    r_symmetry_hbond_refined 0.102
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 1731
    Nucleic Acid Atoms 0
    Heterogen Atoms 34
    Solvent Atoms 75
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) HKL-2000
    Data Reduction (data scaling) SCALEPACK
    Structure Solution AMORE
    Structure Refinement REFMAC 5.2.0005
     
    Software
    refinement REFMAC version: 5.2.0005
    model building AMORE
    data reduction SCALEPACK
    data collection HKL-2000