Functional quorum sensing systems affect biofilm formation and protein expression in Yersinia pestis.
Adv Exp Med Biol
; 603: 178-91, 2007.
Article
en En
| MEDLINE
| ID: mdl-17966414
ABSTRACT
Gram-negative bacteria predominantly use two types of quorum sensing (QS) systems--LuxI-LuxR, responsible for synthesis of N-acylhomoserine lactones (AHL or AI-1 signal molecule), and LuxS, which makes furanones (AI-2 signal molecule). We showed that LuxS and two LuxI-LuxR (YtbIR and YpsIR) systems are functional in Y. pestis. Four different AHL molecules were detected in Y. pestis extracts using TLC bioassays. Our data suggest that YtbIR is responsible for the production of long chain AHLs. Confocal laser scanning microscopy showed that biofilm formation is decreased in an ytbIR ypsIR luxS mutant. Two-dimensional gel electrophoresis revealed altered levels of protein expression in a Y. pestis triple QS mutant at 26 degrees C and 37 degrees C.
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Base de datos:
MEDLINE
Asunto principal:
Yersinia pestis
/
Percepción de Quorum
Idioma:
En
Revista:
Adv Exp Med Biol
Año:
2007
Tipo del documento:
Article
País de afiliación:
Estados Unidos