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Maintaining the competitive edge through sRNA regulation

Project Description

To survive in a competitive environment, a bacterium must be biologically fit. This is as important for free-living microbes that have to compete for limited nutrients in their habitat, as it is for pathogens who have to strike a fine balance between their own proliferation and evading detection by the host, or counteracting antibiotic exposure. On a grand scale, regulatory proteins allow bacteria to dramatically overhaul gene expression patterns in response to changes in conditions. However, as with any highly sophisticated engine, it is the fine-tuning that can really decide the race. In this PhD project, you will investigate one of the key molecular mechanisms, small regulatory RNAs (sRNAs), that allow bacteria to fine-tune their physiology and optimally adapt to conditions.

The explosion of Next-Generation Sequencing projects has highlighted the importance of post-transcriptional regulation, including sRNAs, in controlling bacterial survival. Most of these studies have focussed on Gram-negative bacteria, like E. coli. However, we understand far less about how Gram-positive bacteria, such as Staphylococcus, Streptococcus and Bacillus species employ sRNAs to micro-manage their physiology. This project will build on extensive prior work by the Denham lab, which has led to the identification of sRNA ‘hubs’ in this group of bacteria. The most well characterised hub consists of at least three different sRNAs, and is involved in controlling competitive fitness, biofilm formation, antimicrobial production and antibiotic resistance.

As the successful candidate, you will take our research to the next level by addressing the following questions:

(1) What are key players that enable the sRNA hubs to function?
(2) How are the different components regulated?
(3) How does RNA processing affect the function of the hubs?
(4) How do the hubs control bacterial physiology?

Under the guidance of an interdisciplinary team of researchers, you will receive training in cutting-edge molecular biology and microbial physiology, combined with bioinformatics analyses of ‘omics’ data. The project is part of an international collaboration with the Condon/Durand lab in Paris, providing opportunities for exchange of expertise with world-leading experts in the field, and equipping you for a successful career in science.


Applicants should hold, or expect to receive, a First Class or high Upper Second Class UK Honours degree (or the equivalent qualification gained outside the UK) in a relevant subject. A master’s level qualification would also be advantageous. Non-UK applicants must meet our English language entry requirement


Informal enquiries should be directed to Dr Emma Denham, .

Formal applications should be made via the University of Bath’s online application form:

Please ensure that you quote the supervisor’s name and project title in the ‘Your research interests’ section.

More information about applying for a PhD at Bath may be found here:

Anticipated start date: 28 September 2020.

Funding Notes

UK and EU candidates applying for this project will be considered for a University Research Studentship which will cover UK/EU tuition fees, a training support fee of £1,000 per annum and a tax-free maintenance allowance at the UKRI Doctoral Stipend rate (£15,009 in 2019-20) for a period of up to 3.5 years.

How good is research at University of Bath in Biological Sciences?

FTE Category A staff submitted: 24.50

Research output data provided by the Research Excellence Framework (REF)

Click here to see the results for all UK universities

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