It has recently been shown that aliphatic sulphonamides are good inhibitors of carbonic anhydrase (CA) provided that the pK of the sulphonamide is low. We have determined the structure of the complex between CAII and CF3SO2NH2 by X-ray crystallographic methods ...
It has recently been shown that aliphatic sulphonamides are good inhibitors of carbonic anhydrase (CA) provided that the pK of the sulphonamide is low. We have determined the structure of the complex between CAII and CF3SO2NH2 by X-ray crystallographic methods. The nitrogen of the sulphonamide is bound to the zinc ion of the enzyme in the usual manner. The other parts of the inhibitor show a different mode of binding from aromatic sulphonamides since the trifluoromethyl group is bound at the hydrophobic part of the active site instead of pointing out from the active site. It should be possible to design new inhibitors specific for the different isoenzymes, starting from the present structure.
Related Citations:
Refined Structure of the Aminobenzolamide Complex of Human Carbonic Anhydrase II at 1.9 Angstroms Vidgren, J., Svensson, A., Liljas, A. (1993) Int J Biol Macromol 15: 97
Structure of Native and Apo Carbonic Anhydrase II and Structure of Some of its Anion-Ligand Complexes Hakansson, K., Carlsson, M., Svensson, L.A., Liljas, A. (1992) J Mol Biol 227: 1192
Structure of Cobalt Carbonic Anhydrase Complexed with Bicarbonate Hakansson, K., Wehnert, A. (1992) J Mol Biol 228: 1212
Refined Structure of the Acetazolamide Complex of Human Carbonic Anhydrase II at 1.9 Angstroms Vidgren, J., Liljas, A., Walker, N.P.C. (1990) Int J Biol Macromol 12: 342
Organizational Affiliation:
Department of Molecular Biophysics, University of Lund, Sweden.
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