In through the Out Exit: the Role of the Exocyst in Listeria monocytogenes Cell Entry.

The intracellular pathogen Listeria monocytogenes is one of the leading causes of death from foodborne illness in the United States. Internalin A is the key surface protein that drives uptake by epithelial cells expressing E-cadherin. G. C. Gyanwali, T. U. B. Herath, A. Gianfelice, and K. Ireton (Infect Immun 90:e00326-22, 2022, https://doi.org/10.1128/iai.00326-22) unravel the close relationship between internalin A and the exocyst, adding another layer of complexity to the bacterial internalization process.