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Formation of the ∼350-kDa Apg12-Apg5·Apg16 Multimeric Complex, Mediated by Apg16 Oligomerization, Is Essential for Autophagy in Yeast
Open accessAbstract
Autophagy, responsible for the delivery of cytoplasmic components to the lysosome/vacuole for degradation, is the major degradative pathway in eukaryotic cells. This process requires a ubiquitin-like protein conjugation system, in which Apg12 is covalently bound to Apg5. In the yeast Saccharomyces cerevisiae, the Apg12-Apg5 conjugate further interacts with a small coiled-coil protein, Apg16. The Apg12-Apg5 and Apg16 are localized in the cytosol and pre-autophagosomal structures and play an essential role in autophagosome formation. Here we show that the Apg12-Apg5 conjugate and Apg16 form a approximately 350-kDa complex in the cytosol. Because Apg16 was suggested to form a homo-oligomer, we generated an in vivo system that allowed us to control the oligomerization state of Apg16. With this system, we demonstrated that formation of the approximately 350-kDa complex and autophagic activity depended on the oligomerization state of Apg16. These results suggest that the Apg12-Apg5 conjugate and Apg16 form a multimeric complex mediated by the Apg16 homo-oligomer, and formation of the approximately 350-kDa complex is required for autophagy in yeast.
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Citations
Cited by
Mechanism and medical implications of mammalian autophagy
Dikic, I., & Elazar, Z. (2018) · Nature Reviews Molecular Cell Biology · doi:10.1038/s41580-018-0003-4 · Cited by 2,771
An Overview of Autophagy: Morphology, Mechanism, and Regulation
Parzych, K. R., & Klionsky, D. J. (2014) · Antioxidants & Redox Signaling · doi:10.1089/ars.2013.5371 · Cited by 2,521
Mizushima, N., Yamamoto, A., Matsui, M., Yoshimori, T., & Ohsumi, Y. (2004) · Molecular Biology of the Cell · doi:10.1091/mbc.e03-09-0704 · Cited by 2,105
Self-citationRioux, J. D., Xavier, R. J., Taylor, K. D., Silverberg, M. S., Goyette, P., Huett, A., Green, T., Kuballa, P., Barmada, M. M., Datta, L. W., et al. (2007) · Nature Genetics · doi:10.1038/ng2032 · Cited by 1,769
A key role for autophagy and the autophagy gene Atg16l1 in mouse and human intestinal Paneth cells
Cadwell, K., Liu, J. Y., Brown, S. L., Miyoshi, H., Loh, J., Lennerz, J. K., Kishi, C., Kc, W., Carrero, J. A., Hunt, S., et al. (2008) · Nature · doi:10.1038/nature07416 · Cited by 1,542
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Metadata
- Authors
- Kuma, A., Mizushima, N., Ishihara, N., & Ohsumi, Y.
- Venue
- Journal of Biological Chemistry
- Publisher
- Elsevier BV
- Published
- 2002-05
- Volume
- 277
- Issue
- 21
- Pages
- 18619-18625
- ISSN
- 0021-9258 (ISSN-L)
- OpenAlex
- W2039579794
- Cited by
- 441
- References
- 0
- FWCI
- 9.27
- Type
- journal article
- Language
- en
- Open access
- hybrid
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- CoChat. (2026). Citation check: Formation of the ∼350-kDa Apg12-Apg5·Apg16 Multimeric Complex, Mediated by Apg16 Oligomerization, Is Essential for Autophagy in Yeast. https://app.cochat.ai/papers/10.1074/jbc.m111889200
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- Kuma, A., Mizushima, N., Ishihara, N., & Ohsumi, Y. (2002). Formation of the ∼350-kDa Apg12-Apg5·Apg16 Multimeric Complex, Mediated by Apg16 Oligomerization, Is Essential for Autophagy in Yeast. Journal of Biological Chemistry. https://doi.org/10.1074/jbc.m111889200
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