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X-RAY DIFFRACTION
Materials and Methods page
2FTL
  •   Crystallization Hide
    Crystallization Experiments
    Method VAPOR DIFFUSION, HANGING DROP
    pH 7.5
    Temperature 298.0
    Details 10 mM calcium chloride, 0.1 M HEPES, 1.8 M ammonium sulfate, 0.02% sodium azide; 20% ethylene glycol added upon harvesting and prior to freezing, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 74.73 α = 90
    b = 81.91 β = 90
    c = 124.26 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 2002-08-20
     
    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) 1.6
    Resolution(Low) 20
    Number Reflections(All) 50718
    Number Reflections(Observed) 50681
    Percent Possible(Observed) 99.9
    R Merge I(Observed) 0.05
    B(Isotropic) From Wilson Plot 22.4
    Redundancy 10.3
     
    High Resolution Shell Details
    Resolution(High) 1.6
    Resolution(Low) 1.66
    Percent Possible(All) 99.3
    R Merge I(Observed) 0.241
    Mean I Over Sigma(Observed) 4.63
    Redundancy 4.5
    Number Unique Reflections(All) 4959
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method MOLECULAR REPLACEMENT
    reflnsShellList 1.62
    Resolution(Low) 20.0
    Cut-off Sigma(I) -3.0
    Cut-off Sigma(F) 0.0
    Number of Reflections(all) 48724
    Number of Reflections(Observed) 48719
    Number of Reflections(R-Free) 3953
    Percent Reflections(Observed) 100.0
    R-Factor(All) 0.2149
    R-Factor(Observed) 0.2149
    R-Work 0.2138
    R-Free 0.2273
    R-Free Selection Details RANDOM, SAME TEST SET AS FOR PDB ID 2FI3, 2FI4, AND 2FI5
     
    Temperature Factor Modeling
    Isotropic Thermal Model ISOTROPIC
    Mean Isotropic B Value 17.3
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 1.62
    Shell Resolution(Low) 1.72
    Number of Reflections(Observed) 8008
    Number of Reflections(R-Free) 667
    Number of Reflections(R-Work) 7341
    R-Factor(R-Work) 0.251
    R-Factor(R-Free) 0.274
    Percent Reflections(Observed) 99.93
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 1.72
    Shell Resolution(Low) 1.85
    Number of Reflections(Observed) 8057
    Number of Reflections(R-Free) 648
    R-Factor(R-Work) 0.255
    R-Factor(R-Free) 0.293
    Percent Reflections(Observed) 100.0
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 1.85
    Shell Resolution(Low) 2.04
    Number of Reflections(Observed) 8042
    Number of Reflections(R-Free) 625
    R-Factor(R-Work) 0.238
    R-Factor(R-Free) 0.266
    Percent Reflections(Observed) 100.0
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 2.04
    Shell Resolution(Low) 2.34
    Number of Reflections(Observed) 8102
    Number of Reflections(R-Free) 654
    R-Factor(R-Work) 0.227
    R-Factor(R-Free) 0.244
    Percent Reflections(Observed) 100.0
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 2.34
    Shell Resolution(Low) 2.94
    Number of Reflections(Observed) 8126
    Number of Reflections(R-Free) 657
    R-Factor(R-Work) 0.215
    R-Factor(R-Free) 0.241
    Percent Reflections(Observed) 100.0
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 2.94
    Shell Resolution(Low) 20.0
    Number of Reflections(Observed) 8384
    Number of Reflections(R-Free) 702
    R-Factor(R-Work) 0.184
    R-Factor(R-Free) 0.182
    Percent Reflections(Observed) 99.99
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    c_scangle_it 2.167
    c_scbond_it 1.521
    c_mcangle_it 1.493
    c_mcbond_it 0.979
    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) 0.21
    Luzzati Sigma A(Observed) 0.16
    Luzzati Resolution Cutoff(Low) 5.0
    Luzzati ESD(R-Free Set) 0.23
    Luzzati Sigma A(R-Free Set) 0.19
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 2071
    Nucleic Acid Atoms 0
    Heterogen Atoms 67
    Solvent Atoms 260
     
     
  •   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