PilJ localizes to cell poles and is required for type IV pilus extension in Pseudomonas aeruginosa.
Curr Microbiol
; 55(5): 389-95, 2007 Nov.
Article
en En
| MEDLINE
| ID: mdl-17713814
Twitching motility allows Pseudomonas aeruginosa to respond to stimuli by extending and retracting its type IV pili (TFP). PilJ is a protein necessary for this surface-associated twitching motility and bears high sequence identity with Escherichia coli methyl-accepting chemotaxis proteins (MCP). Here, we report that whereas wild-type P. aeruginosa PAO1 cells have extended pili at a single pole, pilJ mutant cells have shortened pili often at both poles despite normal levels of pilin accumulation, suggesting that PilJ is required for full TFP assembly/extension. Using yellow fluorescent protein fusions (pilJ-yfp), both plasmid born and in-frame chromosomal constructs, we determined that PilJ localizes to both poles of the cell. Overexpression of pilJ-yfp resulted in the protein accumulating between the poles.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Pseudomonas aeruginosa
/
Proteínas Bacterianas
/
Fimbrias Bacterianas
/
Proteínas Fimbrias
Idioma:
En
Revista:
Curr Microbiol
Año:
2007
Tipo del documento:
Article
País de afiliación:
Estados Unidos
Pais de publicación:
Estados Unidos