Table IB. Ubiquitylated transporter, channel, and related proteins identified in urinary exosomes. ^ indicates known ubiquitylated sites. Ubiquitylated site topological domain is reported as the following notation: [NH₂-tail (N), COOH-tail (C), loop (L); Cytoplasmic (Cy), Extracellular (Ex), Intramembrane (In), Mitochondrial intermembrane (M)].