Carbonic anhydrase inhibitors. Inhibition studies of a coral secretory isoform by sulfonamides.
The inhibition of a newly cloned coral carbonic anhydrase (CA, EC 4.2.1.1) has been investigated with a series of sulfonamides, including some clinically used derivatives (acetazolamide, methazolamide, ethoxzolamide, dichlorophenamide, dorzolamide, brinzolamide, benzolamide, and sulpiride, or indisulam, a compound in clinical development as antitumor drug), as well as the sulfamate antiepileptic topiramate. Some simple amino-/hydrazine-/hydroxy-substituted aromatic/heterocyclic sulfonamides have also been included in the study. All types of activity have been detected, with low potency inhibitors (K(I)s in the range of 163-770nM), or with medium potency inhibitors (K(I)s in the range of 75.1-105nM), whereas ethoxzolamide, several clinically used sulfonamides and heterocyclic compounds showed stronger potency, with K(I)s in the range of 16-48.2nM. These inhibitors may be useful to better understand the physiological role of the Stylophora pistillata CA (STPCA) in corals and its involvement in biomineralisation in this era of global warming.
Bertucci
Anthony
A
Centre Scientifique de Monaco, Avenue Saint-Martin, MC-98000 Principality of Monaco, Monaco.
Innocenti
Alessio
A
Zoccola
Didier
D
Scozzafava
Andrea
A
Tambutté
Sylvie
S
Supuran
Claudiu T
CT
D000595:Amino Acid Sequence; D000818:Animals; D037421:Anthozoa / Q000201:enzymology*; D002257:Carbonic Anhydrase Inhibitors / Q000737:chemistry / Q000494:pharmacology*; D002256:Carbonic Anhydrases / Q000235:genetics / Q000378:metabolism*; D006801:Humans; D008969:Molecular Sequence Data; D015394:Molecular Structure; D011994:Recombinant Proteins / Q000235:genetics / Q000378:metabolism; D016415:Sequence Alignment; D013449:Sulfonamides / Q000737:chemistry / Q000494:pharmacology*
D002257:Carbonic Anhydrase Inhibitors; D011994:Recombinant Proteins; D013449:Sulfonamides; D002256:Carbonic Anhydrases