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X-RAY DIFFRACTION
Materials and Methods page
2FTM
  •   Crystallization Hide
    Crystallization Experiments
    Method VAPOR DIFFUSION, HANGING DROP
    pH 8
    Temperature 298.0
    Details 10 mM calcium chloride, 0.1 M HEPES, 2.0 M ammonium sulfate, 0.02% sodium azide; 20% ethylene glycol added upon harvesting and prior to freezing, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 74.59 α = 90
    b = 81.74 β = 90
    c = 123.6 γ = 90
     
    Space Group
    Space Group Name:    I 2 2 2
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 100
     
    Diffraction Detector
    Detector CCD
    Type NONIUS KAPPA CCD2000
    Details OSMIC CONFOCAL MAX-FLUX (GREEN)
    Collection Date 2002-08-04
     
    Diffraction Radiation
    Monochromator OSMIC CONFOCAL MAX-FLUX (GREEN)
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source ROTATING ANODE
    Type ENRAF-NONIUS FR591
    Wavelength List 1.5418
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma (F) 0.0
    Observed Criterion Sigma(I) -3.0
    Resolution(High) 1.65
    Resolution(Low) 20
    Number Reflections(All) 45596
    Number Reflections(Observed) 45459
    Percent Possible(Observed) 99.7
    R Merge I(Observed) 0.046
    B(Isotropic) From Wilson Plot 25.7
    Redundancy 10.0
     
    High Resolution Shell Details
    Resolution(High) 1.65
    Resolution(Low) 1.71
    Percent Possible(All) 97.1
    R Merge I(Observed) 0.232
    Mean I Over Sigma(Observed) 5.6
    Redundancy 4.0
    Number Unique Reflections(All) 4357
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method MOLECULAR REPLACEMENT
    reflnsShellList 1.65
    Resolution(Low) 20.0
    Cut-off Sigma(I) -3.0
    Cut-off Sigma(F) 0.0
    Number of Reflections(all) 45740
    Number of Reflections(Observed) 45459
    Number of Reflections(R-Free) 3671
    Percent Reflections(Observed) 99.4
    R-Factor(All) 0.2078
    R-Factor(Observed) 0.2078
    R-Work 0.2068
    R-Free 0.2195
    R-Free Selection Details RANDOM; SAME SET AS FOR PDB IDS 2FI3, 2FI4 AND 2FI5
     
    Temperature Factor Modeling
    Isotropic Thermal Model ISOTROPIC
    Mean Isotropic B Value 18.7
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 1.65
    Shell Resolution(Low) 1.75
    Number of Reflections(Observed) 7239
    Number of Reflections(R-Free) 582
    Number of Reflections(R-Work) 6657
    R-Factor(R-Work) 0.253
    R-Factor(R-Free) 0.287
    Percent Reflections(Observed) 96.28
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 1.75
    Shell Resolution(Low) 1.89
    Number of Reflections(Observed) 7552
    Number of Reflections(R-Free) 601
    R-Factor(R-Work) 0.232
    R-Factor(R-Free) 0.258
    Percent Reflections(Observed) 100.0
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 1.89
    Shell Resolution(Low) 2.08
    Number of Reflections(Observed) 7571
    Number of Reflections(R-Free) 586
    R-Factor(R-Work) 0.217
    R-Factor(R-Free) 0.229
    Percent Reflections(Observed) 100.0
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 2.08
    Shell Resolution(Low) 2.38
    Number of Reflections(Observed) 7569
    Number of Reflections(R-Free) 632
    R-Factor(R-Work) 0.219
    R-Factor(R-Free) 0.236
    Percent Reflections(Observed) 100.0
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 2.38
    Shell Resolution(Low) 3.0
    Number of Reflections(Observed) 7654
    Number of Reflections(R-Free) 615
    R-Factor(R-Work) 0.209
    R-Factor(R-Free) 0.227
    Percent Reflections(Observed) 99.98
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 3.0
    Shell Resolution(Low) 20.0
    Number of Reflections(Observed) 7874
    Number of Reflections(R-Free) 655
    R-Factor(R-Work) 0.185
    R-Factor(R-Free) 0.19
    Percent Reflections(Observed) 100.0
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    c_scangle_it 2.176
    c_scbond_it 1.523
    c_mcangle_it 1.518
    c_mcbond_it 1.001
    c_improper_angle_d 0.0
    c_bond_d 0.005
    c_angle_deg 1.3
    c_dihedral_angle_d 25.5
     
    Coordinate Error
    Luzzati ESD(Observed) 0.2
    Luzzati Sigma A(Observed) 0.14
    Luzzati Resolution Cutoff(Low) 5.0
    Luzzati ESD(R-Free Set) 0.22
    Luzzati Sigma A(R-Free Set) 0.17
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 2076
    Nucleic Acid Atoms 0
    Heterogen Atoms 64
    Solvent Atoms 238
     
     
  •   Software and Computing Hide
    Computing
    Data Reduction (intensity integration) HKL-2000
    Data Reduction (data scaling) SCALEPACK
    Structure Solution CNS
    Structure Refinement CNS 1.1
     
    Software
    refinement CNS version: 1.1
    model building CNS
    data reduction SCALEPACK
    data collection HKL-2000