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Important toxin helps the cholera bacterium to survive

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Infection researchers at Umeå University have discovered that the cholera bacterium can produce a toxin that is considered particularly important for the bacterium in its natural environments and for survival in competition with other organisms. Knowledge of the toxin means that there is another tool that can be used in the fight against cholera and similar diseases. The study is published in PNAS.

Picture:Sun Nyunt Wai (leading PI), Aftab Nadeem (first author) and Karina Persson (leading PI). Credit: Mattias Petterson.


Sun Nyunt Wai (Professor at the Department of Molecular Biology, Umeå University and MIMS Senior PI) and Karina Persson (Associate Professor at the Department of Chemistry, Umeå University), the primary investigators behind this project, believe that the results of this study will pave the way for Mak genes and proteins to be explored as new potential targets for new diagnostics and therapeutic strategies that are in high demand for various Vibrionaceae, ie pathogens that cause disease in both humans and fish.

Original press release written by Ingrid Söderbergh is published in Swedish on the Umeå University website here:

Original scientific publication: Aftab Nadeem, Raghavendra Nagampalli, Eric Toh, Athar Alam, Si Lhyam Myint, Thomas V. Heidler, Mitesh Dongre, Nikola Zlatkov, Hudson Pace, Fouzia Bano, Anders Sjöstedt, Marta Bally, Bernt Eric Uhlin, Sun Nyunt Wai och Karina Persson: A tripartite cytolytic toxin formed by Vibrio cholerae proteins with flagellum-facilitated secretion. (2021) PNAS, 10.1073/pnas.2111418118


Emmanuelle Charpentier took the Nobel Prize in Chemistry

Emmanuelle has been awarded jointly with Jennifer Doudna the 2020 Nobel Prize in Chemistry for discovering the groundbreaking CRISPR-Cas9 gene editing technology. She is a former group leader at MIMS, honorary doctor at Umeå University and former visiting professor at UCMR.

Movie by Knut and Alice Wallenberg Foundation (

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movie by Knut and Alice Wallenberg Foundation, with participation of scientists from MIMS and UCMR:
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Research about infectious diseases:

Oliver Billker in movie of Knut and Alice Wallenberg Foundation:
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