FIGURE 3.

Ubiquitin‐mediated protein trafficking and localization (by Figdraw). (A) Ubiquitin‐mediated protein degradation in the endoplasmic reticulum (ER) involves tagging misfolded proteins for transport to the proteasome. (B) Ubiquitination facilitates the reorganization of COPII vesicles, allowing them to form larger vesicles capable of accommodating substrates. (C) In the Golgi apparatus, ubiquitination mediates the relocation and transport of proteins. (D) Ubiquitin‐mediated transport of proteins within the nucleus ensures proper protein localization and function. Dub, deubiquitinases; NPC, nuclear pore complex; ER, endoplasmic reticulum.