Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 1 de 1
Filtrar
Mais filtros










Base de dados
Intervalo de ano de publicação
1.
J Med Chem ; 66(1): 553-576, 2023 01 12.
Artigo em Inglês | MEDLINE | ID: mdl-36548006

RESUMO

Rising infection rates with multidrug-resistant pathogens calls for antibiotics with novel modes of action. Herein, we identify the inner membrane protein TonB, a motor of active uptake in Gram-negative bacteria, as a novel target in antimicrobial therapy. The interaction of the TonB box of outer membrane transporters with TonB is crucial for the internalization of essential metabolites. We designed TonB box peptides and coupled them with synthetic siderophores in order to facilitate their uptake into bacteria in up to 32 synthetic steps. Three conjugates repressed the growth of Pseudomonas aeruginosa cells unable to produce their own siderophores, with minimal inhibitory concentrations between 0.1 and 0.5 µM. The transporters mediating uptake of these compounds were identified as PfeA and PirA. The study illustrates a variant of cellular suicide where a transporter imports its own inhibitor and demonstrates that artificial siderophores can import cargo with molecular weights up to 4 kDa.


Assuntos
Antibacterianos , Sideróforos , Sideróforos/química , Antibacterianos/farmacologia , Antibacterianos/metabolismo , Pseudomonas aeruginosa/metabolismo , Proteínas de Membrana/metabolismo , Transporte Biológico , Proteínas de Membrana Transportadoras/metabolismo
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...