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fos-1, a putative histidine kinase as a virulence factor systemic aspergillosis

Tipo de material: TextoTextoSeries ; Medical Mycology, 40(3), p.259-262, 2002Trabajos contenidos:
  • Clemons, K. V
  • Miller, T. K
  • Selitrennikoff, C. P
  • Stevens, D. A
Recursos en línea: Resumen: In fungi, two-component histidine kinases have various functions including regulation of osmosensitivity, and of cell-wall assembly. Furthermore, one of these proteins, cos-1, has been shown to be important for virulence of Candida albicans. Recently, a putative histidine kinase, fos-1, has been isolated and partially characterized from Aspergillus fumigatus. Here we compare the virulence of a fos-1 deletion strain with that of the parental wild-type strain in a murine model of systemic aspergillosis. Our results show that the fos-1 deletion strain has significantly reduced virulence as compared with the parental wild-type strain. Thus, we propose that the fos-1 two-component histidine kinase is a virulence factor of A. fumigatus.
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In fungi, two-component histidine kinases have various functions including regulation of osmosensitivity, and of cell-wall assembly. Furthermore, one of these proteins, cos-1, has been shown to be important for virulence of Candida albicans. Recently, a putative histidine kinase, fos-1, has been isolated and partially characterized from Aspergillus fumigatus. Here we compare the virulence of a fos-1 deletion strain with that of the parental wild-type strain in a murine model of systemic aspergillosis. Our results show that the fos-1 deletion strain has significantly reduced virulence as compared with the parental wild-type strain. Thus, we propose that the fos-1 two-component histidine kinase is a virulence factor of A. fumigatus.

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