Antibacterial activity of a virgatusin-related compound.
Biosci Biotechnol Biochem
; 71(3): 677-80, 2007 Mar.
Article
en En
| MEDLINE
| ID: mdl-17341839
The relationship between antibacterial activity of tetra-substituted tetrahydrofuran lignans (1-4) and their absolute configurations was tested. Only compound 4 among two virgatusins and two related compounds exhibited growth inhibitory activity against the Gram-positive bacteria Bacillus subtilis, Staphylococcus aureus and Listeria denitrificans. Compound 4 affected the growth of B. subtilis in a bactericidic manner, and its ability to dissipate the cytoplasmic membrane potential was investigated using the fluorescence probe 3,3'-dipropylthiadicarbocyanine iodide. These results suggested that compound 4 damages cells by causing the loss of the proton motive force and disruption of the cellular integrity of the membrane, leading to cell death. In addition, it was shown that the antibacterial activity of a lignan was closely related to its absolute configuration and functional groups.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Membrana Celular
/
Colorantes Fluorescentes
/
Furanos
/
Bacterias Grampositivas
/
Potenciales de la Membrana
/
Antibacterianos
Idioma:
En
Revista:
Biosci Biotechnol Biochem
Asunto de la revista:
BIOQUIMICA
/
BIOTECNOLOGIA
Año:
2007
Tipo del documento:
Article
País de afiliación:
Japón
Pais de publicación:
Reino Unido