Sulfonamide inhibition study of the ß-class carbonic anhydrase from the caries producing pathogen Streptococcus mutans.
Bioorg Med Chem Lett
; 25(11): 2291-7, 2015 Jun 01.
Article
em En
| MEDLINE
| ID: mdl-25913199
ABSTRACT
Streptococcus mutans, the oral pathogenic bacterium provoking dental caries formation, encodes for a ß-class carbonic anhydrase (CA, EC 4.2.1.1), SmuCA. This enzyme was cloned, characterized and investigated for its inhibition profile with the major class of CA inhibitors, the primary sulfonamides. SmuCA has a good catalytic activity for the CO2 hydration reaction, with a kcat of 4.2×10(5) s(-1) and kcat/Km of 5.8×10(7) M(-1)×s(-1), and is efficiently inhibited by most sulfonamides (KIs of 246 nM-13.5 µM). The best SmuCA inhibitors were bromosulfanilamide, deacetylated acetazolamide, 4-hydroxymethylbenzenesulfonamide, a pyrimidine-substituted sulfanilamide derivative, aminobenzolamide and compounds structurally similar to it, as well as acetazolamide, methazolamide, indisulam and valdecoxib. These compounds showed inhibition constants ranging between 246 and 468 nM. Identification of effective inhibitors of this enzyme may lead to pharmacological tools useful for understanding the role of S. mutans CAs in dental caries formation, and eventually the development of pharmacological agents with a new mechanism of antibacterial action.
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01-internacional
Base de dados:
MEDLINE
Assunto principal:
Streptococcus mutans
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Sulfonamidas
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Inibidores da Anidrase Carbônica
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Anidrases Carbônicas
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Antibacterianos
Idioma:
En
Ano de publicação:
2015
Tipo de documento:
Article