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The ATG8 family of proteins regulates the autophagy process from the autophagosome maturation and cargo recruitment up to degradation. Autophagy dysfunction is involved in the development of multiple diseases. The LC3 interacting region (LIR)-based molecular traps have been designed to isolate endogenous ATG8 proteins and their interactors in order to facilitate the study of selective autophagy events. Here, we summarize protocols describing LC3 traps and sample preparation as well as adaptations for the analysis of ATG8 proteins in different biological models. This protocol was optimized to prepare affinity columns, reduce background, and improve the protein recovery to be analyzed by immunodetection with antibodies recognizing proteins of interest.
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http://dx.doi.org/10.1007/978-1-0716-2859-1_14 | DOI Listing |
iScience
September 2025
Institute of Pathobiochemistry, The Autophagy Lab, University Medical Center of the Johannes Gutenberg-University Mainz, Duesbergweg 6, 55128 Mainz, Germany.
Among its various functions, the sigma-1 receptor (σ1R) has been reported to modulate macroautophagy. It is currently unknown how this activity is mediated. We phylogenetically, structurally, and biochemically analyzed σ1R regarding its function in autophagy.
View Article and Find Full Text PDFProc Natl Acad Sci U S A
August 2025
Areas of Excellence Centre for Organelle Biogenesis and Function, Centre for Cell & Developmental Biology and State Key Laboratory of Agrobiotechnology, School of Life Sciences, The Chinese University of Hong Kong, Hong Kong Special administrative regions, China.
As the energy center of the cell, mitochondria display enormous metabolic plasticity to meet the cellular demand for plant growth and development, which is tightly linked to their structural and dynamic plasticity. Mitochondrial number and morphology are coordinated through the actions of the mitochondrial division and fusion. Meanwhile, damaged mitochondrial contents are removed to avoid excess toxicity to the plant cells.
View Article and Find Full Text PDFMicroPubl Biol
July 2025
Biological Sciences, Oakland University, Rochester, Michigan, United States.
Macroautophagy/autophagy is a conserved mechanism of cellular degradation and recycling. Autophagy is a multi-step process that must be precisely regulated at multiple levels (transcriptional, post-transcriptional, translational, and post-translational). However, there is a gap in our understanding of the molecular details of these mechanisms.
View Article and Find Full Text PDFMol Inform
July 2025
Institute of Food Biotechnology and Genomics, Natl. Academy of Sciences of Ukraine, Kyiv, Ukraine.
Despite the abundance of systematically collected experimental data and facts, the multistep process of autophagy still contains many dark spots. One concerns the background selectivity of interactions between certain autophagy-related protein (ATG8) isoforms and their receptors/adaptors in plants during the autophagy process. By regulating phagophore initiation, expansion, and maturation, these proteins control the assembly of numerous autophagy proteins at this key docking platform.
View Article and Find Full Text PDFPest Manag Sci
July 2025
Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City, National Citrus Engineering Research Center, Citrus Research Institute, Southwest University, Chongqing, China.
Background: Autophagy is a conserved mechanism by which eukaryotic organisms defend against pathogen infection. However, the molecular mechanisms underlying the role of autophagy in the interactions of insect vectors with the phloem-limited bacterial pathogen remain unclear. The citrus Huanglongbing (HLB)-associated pathogen 'Candidatus Liberibacter asiaticus' (CLas) seriously endangers development of the citrus industry.
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