Warning: Undefined variable $zfal in C:\Inetpub\vhosts\kidney.de\httpdocs\mlpefetch.php on line 525
Deprecated: str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in C:\Inetpub\vhosts\kidney.de\httpdocs\mlpefetch.php on line 525
Warning: Undefined variable $sterm in C:\Inetpub\vhosts\kidney.de\httpdocs\mlpefetch.php on line 530
 free
Warning: Undefined variable $sterm in C:\Inetpub\vhosts\kidney.de\httpdocs\mlpefetch.php on line 531
 free
 free
 
English Wikipedia
Nephropedia Template TP (
Twit Text
DeepDyve
Pubget Overpricing |  
lüll
Rhoptries: an arsenal of secreted virulence factors Bradley PJ; Sibley LDCurr Opin Microbiol 2007[Dec]; 10 (6): 582-7Apicomplexan parasites use actin-based motility coupled with regulated protein secretion from apical organelles to actively invade host cells. Crucial in this process are rhoptries, club-shaped secretory organelles that discharge their contents during parasite invasion into host cells. A proteomic analysis of the rhoptries in Toxoplasma gondii demonstrated that this organelle contains a number of novel rhoptry proteins (ROPs) including serine-threonine kinases and protein phosphatases. A subset of rhoptry proteins called RONs have been shown to target the moving junction, which plays a key role in invasion and parasitophorous vacuole formation. Other ROP proteins have various destinations in the host cell including the host cell nucleus and the parasitophorous vacuole, probably reflecting their distinct targets and roles. Forward genetic analysis recently revealed that secretory ROP kinases dramatically influence host gene expression and are the major parasite virulence factors. Thus, ROP proteins are functionally analogous (though not homologous) to effectors released by type III and IV secretion systems, which are factors that play an important role in bacterial virulence. Deciphering the role of ROP effectors may allow specific disruption of these factors, thus offering new options for preventing disease.|Animals[MESH]|Host-Parasite Interactions[MESH]|Humans[MESH]|Organelles/metabolism[MESH]|Protozoan Proteins/*metabolism[MESH]|Toxoplasma/genetics/metabolism/*pathogenicity[MESH]|Virulence Factors/*metabolism[MESH] |
