Kate E. Unsworth
Imperial College London
9 Papers
9 Citations
Kate E. Unsworth is an academic researcher from Imperial College London. The author has contributed to research in topics: Type three secretion system & Virulence. The author has an hindex of 9, co-authored 9 publications.
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Papers
pH Sensing by Intracellular Salmonella Induces Effector Translocation
TL;DR: neutral pH is identified as a physiological signal for effector translocation by intracellular Salmonella, which exploits the low pH of the vacuole as a signal to induce assembly of the secretion system, and then the neutral pH ofThe cytoplasm to trigger effectors translocation.
Remodelling of the actin cytoskeleton is essential for replication of intravacuolar Salmonella.
Stéphane Méresse,Kate E. Unsworth,Anja Habermann,Gareth Griffiths,Ferric C. Fang,Maria José Martinez-Lorenzo,Scott R. Waterman,Jean-Pierre Gorvel,David W. Holden +8 more
TL;DR: It is shown that, several hours after bacterial uptake into different host cell types, Salmonella induces the formation of an F‐actin meshwork around bacterial vacuoles, which plays an important role in the establishment of an intracellular niche that sustains bacterial growth.
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SpiC is required for secretion of Salmonella Pathogenicity Island 2 type III secretion system proteins
TL;DR: Results show that SpiC is involved in the process of SPI‐2 secretion and indicate that phenotypes associated with a spiC‐ mutant are caused by the inability of this strain to translocate effector proteins, thus calling for further investigation into the function(s) of this protein.
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In vivo genetic analysis indicates that PhoP-PhoQ and the Salmonella pathogenicity island 2 type III secretion system contribute independently to Salmonella enterica serovar Typhimurium virulence.
TL;DR: The results suggest that mutation of phoP may compensate partially for defects in the SPI-2 T TSS by deregulating SPI-1 TTSS expression, and provide an explanation for previous reports showing an apparent functional overlap between these two systems in vitro.
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Identification and analysis of bacterial virulence genes in vivo
Kate E. Unsworth,David W. Holden +1 more
- 01 Dec 2001
TL;DR: Signature-tagged mutagenesis is a mutation-based screening method for the identification of virulence genes of microbial pathogens as mentioned in this paper. Genes isolated by this approach fall into three classes: those with known biochemical function, those of suspected function and some whose functions cannot be predicted from database searches.
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