Suppr超能文献

超越Atg8结合:AIM/LIR基序在自噬中的作用。

Beyond Atg8 binding: The role of AIM/LIR motifs in autophagy.

作者信息

Fracchiolla Dorotea, Sawa-Makarska Justyna, Martens Sascha

机构信息

a Department of Biochemistry and Cell Biology , Max F. Perutz Laboratories (MFPL), University of Vienna, Vienna Biocenter (VBC) , Vienna , Austria.

出版信息

Autophagy. 2017 May 4;13(5):978-979. doi: 10.1080/15548627.2016.1277311. Epub 2017 Jan 25.

Abstract

Selective macroautophagy/autophagy mediates the selective delivery of cytoplasmic cargo material via autophagosomes into the lytic compartment for degradation. This selectivity is mediated by cargo receptor molecules that link the cargo to the phagophore (the precursor of the autophagosome) membrane via their simultaneous interaction with the cargo and Atg8 proteins on the membrane. Atg8 proteins are attached to membrane in a conjugation reaction and the cargo receptors bind them via short peptide motifs called Atg8-interacting motifs/LC3-interacting regions (AIMs/LIRs). We have recently shown for the yeast Atg19 cargo receptor that the AIM/LIR motifs also serve to recruit the Atg12-Atg5-Atg16 complex, which stimulates Atg8 conjugation, to the cargo. We could further show in a reconstituted system that the recruitment of the Atg12-Atg5-Atg16 complex is sufficient for cargo-directed Atg8 conjugation. Our results suggest that AIM/LIR motifs could have more general roles in autophagy.

摘要

选择性巨自噬/自噬介导细胞质货物物质通过自噬体选择性地运输到溶酶体区室进行降解。这种选择性由货物受体分子介导,这些受体分子通过同时与货物和膜上的Atg8蛋白相互作用,将货物连接到吞噬泡(自噬体的前体)膜上。Atg8蛋白通过结合反应附着在膜上,货物受体通过称为Atg8相互作用基序/LC3相互作用区域(AIMs/LIRs)的短肽基序与它们结合。我们最近发现,对于酵母Atg19货物受体,AIM/LIR基序还用于将刺激Atg8结合的Atg12-Atg5-Atg16复合物募集到货物上。我们可以在重组系统中进一步证明,Atg12-Atg5-Atg16复合物的募集足以实现货物定向的Atg8结合。我们的结果表明,AIM/LIR基序可能在自噬中具有更广泛的作用。

相似文献

1
Beyond Atg8 binding: The role of AIM/LIR motifs in autophagy.
Autophagy. 2017 May 4;13(5):978-979. doi: 10.1080/15548627.2016.1277311. Epub 2017 Jan 25.
2
Mechanism of cargo-directed Atg8 conjugation during selective autophagy.
Elife. 2016 Nov 23;5:e18544. doi: 10.7554/eLife.18544.
3
Selective Autophagy: ATG8 Family Proteins, LIR Motifs and Cargo Receptors.
J Mol Biol. 2020 Jan 3;432(1):80-103. doi: 10.1016/j.jmb.2019.07.016. Epub 2019 Jul 13.
4
Accessory Interaction Motifs in the Atg19 Cargo Receptor Enable Strong Binding to the Clustered Ubiquitin-related Atg8 Protein.
J Biol Chem. 2016 Sep 2;291(36):18799-808. doi: 10.1074/jbc.M116.736892. Epub 2016 Jul 11.
6
LC3/GABARAPs drive ubiquitin-independent recruitment of Optineurin and NDP52 to amplify mitophagy.
Nat Commun. 2019 Jan 24;10(1):408. doi: 10.1038/s41467-019-08335-6.
7
Dissecting the role of the Atg12-Atg5-Atg16 complex during autophagosome formation.
Autophagy. 2013 Mar;9(3):424-5. doi: 10.4161/auto.22931. Epub 2013 Jan 15.
8
Mechanism and functions of membrane binding by the Atg5-Atg12/Atg16 complex during autophagosome formation.
EMBO J. 2012 Nov 14;31(22):4304-17. doi: 10.1038/emboj.2012.278. Epub 2012 Oct 12.
9
Methods for Studying Interactions Between Atg8/LC3/GABARAP and LIR-Containing Proteins.
Methods Enzymol. 2017;587:143-169. doi: 10.1016/bs.mie.2016.10.023. Epub 2017 Jan 12.
10
AlphaFold2 SLiM screen for LC3-LIR interactions in autophagy.
Autophagy. 2025 May 4:1-21. doi: 10.1080/15548627.2025.2493999.

引用本文的文献

1
The rapidly expanding role of LC3-interacting regions in autophagy.
J Cell Biol. 2025 Aug 4;224(8). doi: 10.1083/jcb.202504076. Epub 2025 Jul 24.
2
CaSun1, a SUN family protein, governs the pathogenicity of by recruiting CaAtg8 to promote mitophagy.
Hortic Res. 2025 May 2;12(7):uhaf121. doi: 10.1093/hr/uhaf121. eCollection 2025 Jul.
3
Functional Role of Hepatitis C Virus NS5A in the Regulation of Autophagy.
Pathogens. 2024 Nov 8;13(11):980. doi: 10.3390/pathogens13110980.
4
AlphaFold2 in biomedical research: facilitating the development of diagnostic strategies for disease.
Front Mol Biosci. 2024 Jul 30;11:1414916. doi: 10.3389/fmolb.2024.1414916. eCollection 2024.
5
The matrix protein of lyssavirus hijacks autophagosome for efficient egress by recruiting NEDD4 through its PPxY motif.
Autophagy. 2024 Aug;20(8):1723-1740. doi: 10.1080/15548627.2024.2338575. Epub 2024 Apr 11.
7
A metabolite sensor subunit of the Atg1/ULK complex regulates selective autophagy.
Nat Cell Biol. 2024 Mar;26(3):366-377. doi: 10.1038/s41556-024-01348-4. Epub 2024 Feb 5.
8
Crosstalk between Autophagy and RLR Signaling.
Cells. 2023 Mar 21;12(6):956. doi: 10.3390/cells12060956.
9
AlphaFold2-multimer guided high-accuracy prediction of typical and atypical ATG8-binding motifs.
PLoS Biol. 2023 Feb 8;21(2):e3001962. doi: 10.1371/journal.pbio.3001962. eCollection 2023 Feb.

文献AI研究员

20分钟写一篇综述,助力文献阅读效率提升50倍。

立即体验

用中文搜PubMed

大模型驱动的PubMed中文搜索引擎

马上搜索

文档翻译

学术文献翻译模型,支持多种主流文档格式。

立即体验