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X-RAY DIFFRACTION
Materials and Methods page
4GGK
  •   Crystallization Hide
    Crystallization Experiments
    Method VAPOR DIFFUSION, HANGING DROP
    pH 6.5
    Temperature 277.0
    Details 50 mM Bis-Tris, pH 6.5, 18% PEG-3350, 2% tascimate, pH 6.0, 1:100 m/m ratio protein:chymotrypsin, VAPOR DIFFUSION, HANGING DROP, temperature 277K
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 38.86 α = 90
    b = 38.86 β = 90
    c = 213.31 γ = 90
     
    Space Group
    Space Group Name:    P 43 21 2
     
     
  •   Diffraction Hide
    Diffraction Experiment
    Diffrn ID 1
    Data Collection Temperature 100
     
    Diffraction Detector
    Detector CCD
    Type ADSC QUANTUM 315
    Collection Date 2012-04-14
     
    Diffraction Radiation
    Monochromator Cryogenically cooled double crystal monochromator with horizontal focusing sagittal bend second mono crystal with 4:1 magnification ratio and vertically focusing mirror
    Diffraction Protocol SINGLE WAVELENGTH
     
    Diffraction Source
    Source SYNCHROTRON
    Type NSLS BEAMLINE X29A
    Wavelength List 1.2716, 1.2983
    Site NSLS
    Beamline X29A
     
     
  •   Refinement Data Hide
    Reflection Details
    Observed Criterion Sigma (F) 0.0
    Observed Criterion Sigma(I) -3.0
    Resolution(High) 2.1
    Resolution(Low) 40
    Number Reflections(Observed) 10188
    Percent Possible(Observed) 99.5
    Redundancy 5.8
     
    High Resolution Shell Details
    Resolution(High) 2.1
    Resolution(Low) 2.23
    Percent Possible(All) 98.1
    Mean I Over Sigma(Observed) 5.6
    Redundancy 5.8
    Number Unique Reflections(All) 2879
     
     
  •   Refinement Hide
    Refinement Statistics
    Structure Solution Method MOLECULAR REPLACEMENT
    reflnsShellList 2.1
    Resolution(Low) 38.27
    Number of Reflections(all) 9676
    Number of Reflections(Observed) 9676
    Number of Reflections(R-Free) 514
    Percent Reflections(Observed) 99.43
    R-Factor(All) 0.21144
    R-Factor(Observed) 0.21144
    R-Work 0.20938
    R-Free 0.25123
    R-Free Selection Details RANDOM
     
    Temperature Factor Modeling
    Mean Isotropic B Value 41.182
    Anisotropic B[1][1] -0.16
    Anisotropic B[1][2] 0.0
    Anisotropic B[1][3] 0.0
    Anisotropic B[2][2] -0.16
    Anisotropic B[2][3] 0.0
    Anisotropic B[3][3] 0.31
     
    Resolution Shells
    Refinement method X-RAY DIFFRACTION
    Shell Resolution(High) 2.1
    Shell Resolution(Low) 2.157
    Number of Reflections(Observed) 642
    Number of Reflections(R-Free) 35
    Number of Reflections(R-Work) 565
    R-Factor(R-Work) 0.226
    R-Factor(R-Free) 0.294
    Percent Reflections(Observed) 93.46
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    r_scangle_it 2.779
    r_scbond_it 1.695
    r_mcangle_it 0.998
    r_mcbond_other 0.132
    r_mcbond_it 0.551
    r_gen_planes_other 0.001
    r_gen_planes_refined 0.005
    r_chiral_restr 0.076
    r_dihedral_angle_4_deg 16.486
    r_dihedral_angle_3_deg 14.372
    r_dihedral_angle_2_deg 42.316
    r_dihedral_angle_1_deg 6.462
    r_angle_other_deg 0.884
    r_angle_refined_deg 1.382
    r_bond_other_d 0.001
    r_bond_refined_d 0.013
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 1316
    Nucleic Acid Atoms 0
    Heterogen Atoms 6
    Solvent Atoms 35
     
     
  •   Software and Computing Hide
    Computing
    Data Collection CBASS
    Data Reduction (intensity integration) XDS
    Data Reduction (data scaling) SCALA
    Structure Solution Phaser
    Structure Refinement REFMAC 5.5.0072
     
    Software
    refinement REFMAC version: 5.5.0072
    model building Phaser
    data collection CBASS