کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4361544 | 1301397 | 2008 | 9 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Delivery of a Salmonella Typhi Exotoxin from a Host Intracellular Compartment Delivery of a Salmonella Typhi Exotoxin from a Host Intracellular Compartment](/preview/png/4361544.png)
SummarySalmonella Typhi, an exclusive human pathogen and the cause of typhoid fever, expresses a functional cytolethal distending toxin for which only the active subunit, CdtB, has been identified. Here, we show that PltA and PltB, which are encoded in the same pathogenicity islet as cdtB, associate with CdtB to form a multipartite toxin. PltA and PltB are homologs of components of the pertussis toxin, including its ADP-ribosyl transferase subunit. We also show that PltA and PltB are required for the delivery of CdtB from an intracellular compartment to target cells via autocrine and paracrine pathways. We hypothesize that this toxin, which we have named “typhoid toxin,” and its delivery mechanism may contribute to S. Typhi's unique virulence properties.
Journal: - Volume 3, Issue 1, 17 January 2008, Pages 30–38