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. 2019 Sep 3;12:13–22. doi: 10.2147/IBPC.S188869

Figure 1.

Figure 1

Each ENaC subunit has intracellular amino and carboxy termini, two transmembrane domains, and an extracellular loop. When an intact PY motif is present the E-3 ubiquitin ligase NEDD4-2 can bind to ENaC carboxy termini, and ubiquitinate amino termini. In typical Liddle’s syndrome this mechanism is disrupted.