The abstract is read at the publisher; the summary is JClub's.
Protein kinase D–caveolin activity is required for biogenesis of a distinct trans-Golgi network-to-cell surface carrier population transporting influenza hemagglutinin (HA).
- Why it matters: Constitutive secretion from the TGN to the cell surface lacks a clear mechanism for how these carriers form without a canonical cytoplasmic coat.
- What they did: The study identified HA carriers and tested requirements for non-vesicular lipid transfer at ER–Golgi contact sites and for PKD activity, then examined caveolin’s role in budding.
- The result: Caveolin assembles into cholesterol- and PKD-associated oligomers that form a membrane-embedded, coat-like scaffold at lipid nanodomain-enriched TGN subdomains, linking ER–Golgi lipid transfer to cargo sorting, remodeling, and fission.
The findingWhy it mattersWhat they didThe result
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