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Cargo selection in endoplasmic reticulum–to–Golgi transport and relevant diseases
Vi T. Tang, David Ginsburg
Vi T. Tang, David Ginsburg
Published January 3, 2023
Citation Information: J Clin Invest. 2023;133(1):e163838. https://doi.org/10.1172/JCI163838.
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Cargo selection in endoplasmic reticulum–to–Golgi transport and relevant diseases

Abstract

Most proteins destined for the extracellular space or various intracellular compartments must traverse the intracellular secretory pathway. The first step is the recruitment and transport of cargoes from the endoplasmic reticulum (ER) lumen to the Golgi apparatus by coat protein complex II (COPII), consisting of five core proteins. Additional ER transmembrane proteins that aid cargo recruitment are referred to as cargo receptors. Gene duplication events have resulted in multiple COPII paralogs present in the mammalian genome. Here, we review the functions of each COPII protein, human disorders associated with each paralog, and evidence for functional conservation between paralogs. We also provide a summary of current knowledge regarding two prototypical cargo receptors in mammals, LMAN1 and SURF4, and their roles in human health and disease.

Authors

Vi T. Tang, David Ginsburg

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