|
KMID : 0545120030130061021
|
|
Journal of Microbiology and Biotechnology
2003 Volume.13 No. 6 p.1021 ~ p.1026
|
|
|
Evidence That Temporally Alternative Expression of the Vibrio vulnificus Elastase Prevents Proteolytic Inactivation of Hemolysin
|
|
RHEE, JEE EUN
LEE, JEONG HYUN/JEONG, HYE SOOK/PARK, URYUNG/LEE, DONG-HA/WOO, GUN-JO/MIYOSHI, SHIN-ICHI
|
|
|
Abstract
|
|
|
|
Numerous secreted and cell-associated virulence factors have been proposed to account for the fulminating and destructive nature of Vibrio vulnificus infections. Among the putative virulence factors are an elastase, elastolytic protease, and a cytolytic hemolysin. Effects of the elastase on the hemolysin were assessed by evaluating changes of hemolytic activities either in the presence or absence of the protease. Although hemolytic activity in the culture supernatant was lowered by the purified elastase added in Litro, the cellular level of hemolytic activity was unaffected by the mutation of vvpE encoding the elastase. Growth kinetic studies revealed that hemolysin reached its maximum level in the exponential phase of growth, and the elastase appeared at the onset of the stationary phase. These results have provided insight into the regulation of virulence factors: temporally coordinate regulation of virulence factors is essential for the overall success of the pathogen during pathogenesis.
|
|
|
KEYWORD
|
|
|
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
  
|
|