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Triana N. Dalia on Muck Rack

Triana N. Dalia

Bloomington
As seen in: Nature, PNAS, BioRxiv, Cell Press, eLife
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Articles

DprA recruits ComM to facilitate recombination during natural transformation in Gram-negative bacteria

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By Triana N. Dalia, Merick Machouri, Celine Lacrouts, Yoann Fauconnet
| BioRxiv
Abstract Natural transformation (NT) represents one of the major modes of horizontal gene transfer in bacterial species. During NT, cells can take up free DNA from the environment and integrate it into their genome by homologous recombination. While NT has been studied for >90 years, the molecular details underlying this recombination remain poorly understood.
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SbcB facilitates natural transformation in Vibrio cholerae in an exonuclease-independent manner

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By Triana N. Dalia, Ankur B. Dalia
| BioRxiv
Abstract Natural transformation (NT) is a conserved mechanism of horizontal gene transfer in bacterial species. During this process, DNA is taken up into the cytoplasm where it can be integrated into the host genome by homologous recombination. We have previously shown that some cytoplasmic exonucleases can inhibit NT by degrading ingested DNA prior to its successful recombination. Here, however, we demonstrate that the exonuclease SbcB counterintuitively promotes NT in Vibrio cholerae.
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A simple mechanism for integration of quorum sensing and cAMP signalling in Vibrio cholerae

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By Lucas Walker, James RJ Haycocks, Triana N. Dalia, Ankur B. Dalia
| eLife
Original review: This manuscript by Walker et. al. explores the interplay between the global regulators HapR (the QS master high cell density (HDC) regulator) and CRP. Using ChIP-Seq, the authors find that at several sites, the HapR and CRP binding sites overlap. A detailed exploration of the murPQ promoter finds that CRP binding promotes HapR binding, which leads to repression of murPQ.
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