Unhealthy Sugars in Bacterial Cytotoxicity.

Bacterial type three secretion systems (T3SSs) are central to virulence, but the processes stimulating their activation are unclear. In this issue of Cell Host & Microbe, Blondel et al. (2016) perform a genome-wide screen using CRISPR/Cas technology to identify a role for cell surface sulfation and fucosylation in cytotoxicity mediated by Vibrio parahaemolyticus T3SSs.