In addition to its role in proteasomal degradation, ubiquitin has multiple roles in autophagy. It can mark proteins for autophagic degradation and actively drive autophagosome formation. Recent work shows that ubiquitin can also be conjugated to phospholipids and other biomolecules.
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Acknowledgements
The author thanks J. Sakamaki and H. Yamamoto for their helpful comments. This work was supported by a grant for Exploratory Research for Advanced Technology from the Japan Science and Technology Agency (JPMJER1702) and a Grant-in-Aid for Specially Promoted Research from the Japan Society for the Promotion of Science (22H04919).
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Mizushima, N. Ubiquitin in autophagy and non-protein ubiquitination. Nat Struct Mol Biol 31, 208–209 (2024). https://doi.org/10.1038/s41594-024-01217-6
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DOI: https://doi.org/10.1038/s41594-024-01217-6