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X-RAY DIFFRACTION
Materials and Methods page
1CAH
  •   Crystallization Hide
    Crystallization Experiments
    Details CRYSTALLIZED IN 50 MM TRIS-HC1 2.4 M AMMONIUM SULFATE PH 8. 5 AND 1 MM HGC12 AT 4 DEG C (TILANDER, B., STRANDBERG, B. & FRIDBORG, K. (1965). CRYSTAL STRUCTURE ON HUMAN ERYTHROCYTIC CARBONIC ANHYDRASE C. J. MOL. BIOL. 12, 740-760). THE MERCURY IS SUBSEQUENTLY REMOVED BY MERCAPTOETHANOL AND THE ZINC ION WITH DIPICOLINATE. AFTER INSERTION OF COBALT (II), THE CRYSTALS ARE SOAKED IN 0.25 M BICARBONATE 3M AMMONIUM SULFATE 50 MM TRIS-HC1 PH 8.1 OVERNIGHT. THE PROCEDURE IS DESCRIBED IN DETAIL IN THE PAPER MENTIONED ABOVE.
     
  •   Crystal Data Hide
    Unit Cell
    Length    (Å) Angle    (°)
    a = 42.7 α = 90
    b = 41.7 β = 104.6
    c = 73 γ = 90
     
    Space Group
    Space Group Name:    P 1 21 1
     
     
  •   Diffraction Hide
     
  •   Refinement Hide
    Refinement Statistics
    reflnsShellList 1.88
    Resolution(Low) 10.0
    Cut-off Sigma(F) 0.0
    Number of Reflections(Observed) 17858
    R-Factor(Observed) 0.16
     
    Temperature Factor Modeling
    Data Not Available
     
    RMS Deviations
    Parameter Type Deviation from Ideal
    p_orthonormal_tor 30.7
    p_staggered_tor 16.4
    p_planar_tor 3.4
    p_xhyhbond_nbd 0.155
    p_multtor_nbd 0.159
    p_bond_d 0.02
    p_angle_d 0.037
    p_planar_d 0.047
    p_mcbond_it 0.96
    p_mcangle_it 1.553
    p_scbond_it 1.964
    p_scangle_it 3.053
    p_plane_restr 0.018
    p_chiral_restr 0.229
    p_singtor_nbd 0.161
     
    Number of Non-Hydrogen Atoms Used in Refinement
    Protein Atoms 2059
    Nucleic Acid Atoms 0
    Heterogen Atoms 5
    Solvent Atoms 217
     
     
  •   Software and Computing Hide
    Computing
    Structure Refinement PROFFT
     
    Software
    refinement PROFFT