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Review
. 2014 Mar;19(3):134-9.
doi: 10.1016/j.tplants.2013.10.008. Epub 2013 Nov 19.

Clathrin and post-Golgi trafficking: a very complicated issue

David G Robinson  1 , Peter Pimpl  2
Affiliations
Review

Clathrin and post-Golgi trafficking: a very complicated issue

David G Robinson et al. Trends Plant Sci. 2014 Mar.

Abstract

Clathrin-coated vesicles (CCVs) are formed at the plasma membrane and act as vectors for endocytosis. They also assemble at the trans-Golgi network (TGN), but their exact function at this organelle is unclear. Recent studies have examined the effects on vacuolar and secretory protein transport of knockout mutations of the adaptor protein 1 (AP1) μ-adaptin subunit AP1M, but these investigations do not clarify the situation. These mutations lead to the abrogation of multiple trafficking pathways at the TGN and cannot be used as evidence in favour of CCVs being agents for receptor-mediated export of vacuolar proteins out of the TGN. This transport process could just as easily occur through the maturation of the TGN into intermediate compartments that subsequently fuse with the vacuole.

Keywords: TGN maturation; adaptor mutants; clathrin-coated vesicles; vacuolar protein transport.

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