Title |
Huntingtin functions as a scaffold for selective macroautophagy
|
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Published in |
Nature Cell Biology, February 2015
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DOI | 10.1038/ncb3101 |
Pubmed ID | |
Authors |
Yan-Ning Rui, Zhen Xu, Bindi Patel, Zhihua Chen, Dongsheng Chen, Antonio Tito, Gabriela David, Yamin Sun, Erin F. Stimming, Hugo J. Bellen, Ana Maria Cuervo, Sheng Zhang |
Abstract |
Selective macroautophagy is an important protective mechanism against diverse cellular stresses. In contrast to the well-characterized starvation-induced autophagy, the regulation of selective autophagy is largely unknown. Here, we demonstrate that Huntingtin, the Huntington disease gene product, functions as a scaffold protein for selective macroautophagy but it is dispensable for non-selective macroautophagy. In Drosophila, Huntingtin genetically interacts with autophagy pathway components. In mammalian cells, Huntingtin physically interacts with the autophagy cargo receptor p62 to facilitate its association with the integral autophagosome component LC3 and with Lys-63-linked ubiquitin-modified substrates. Maximal activation of selective autophagy during stress is attained by the ability of Huntingtin to bind ULK1, a kinase that initiates autophagy, which releases ULK1 from negative regulation by mTOR. Our data uncover an important physiological function of Huntingtin and provide a missing link in the activation of selective macroautophagy in metazoans. |
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Geographical breakdown
Country | Count | As % |
---|---|---|
United States | 4 | 29% |
United Kingdom | 1 | 7% |
Canada | 1 | 7% |
Netherlands | 1 | 7% |
India | 1 | 7% |
Germany | 1 | 7% |
Unknown | 5 | 36% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Members of the public | 7 | 50% |
Scientists | 5 | 36% |
Science communicators (journalists, bloggers, editors) | 2 | 14% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
United Kingdom | 3 | <1% |
Austria | 2 | <1% |
United States | 2 | <1% |
France | 1 | <1% |
Brazil | 1 | <1% |
Portugal | 1 | <1% |
Belgium | 1 | <1% |
Poland | 1 | <1% |
Unknown | 385 | 97% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 104 | 26% |
Researcher | 67 | 17% |
Student > Master | 58 | 15% |
Student > Bachelor | 40 | 10% |
Student > Postgraduate | 14 | 4% |
Other | 45 | 11% |
Unknown | 69 | 17% |
Readers by discipline | Count | As % |
---|---|---|
Agricultural and Biological Sciences | 120 | 30% |
Biochemistry, Genetics and Molecular Biology | 86 | 22% |
Neuroscience | 63 | 16% |
Medicine and Dentistry | 20 | 5% |
Pharmacology, Toxicology and Pharmaceutical Science | 10 | 3% |
Other | 18 | 5% |
Unknown | 80 | 20% |