Abstract
The PDZ domain-containing protein ZO-2 is defined as a tight junction (TJ) protein, but is also known to have a role in the maintenance of cellular apicobasal polarity and to function as a signalling molecule in several pathways, including the Hippo pathway. In this issue, Liu OX etal. [(2024) FEBS J, https://doi.org/10.1111/febs.17304] report how the multiple protein binding sites of ZO2 protein allow it to act as a scaffold to facilitate its signalling functions.
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