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- W2066882034 abstract "Autophagy is an important means for recycling damaged cell components or degrading various proteins when plants are under starvation or oxidative stress. AuTophaGy-related gene 18 (ATG18), a phosphoinositide-binding protein that functions through the WD40 domain, is required for vesicle formation in autophagy. Here, we isolated and characterized MdATG18a from Malus domestica. Its full-length cDNA is a complete 1281 bp open reading frame (ORF) of nucleotides encoding a polypeptide of 426 amino acids. The deduced protein contains two WD40 domains. Phylogenetic analysis confirmed that MdATG18a clusters with Arabidopsis members AtATG18a, c, d, and e. The 3D structure has a seven-bladed β-propeller and two putative phosphatidylinositol 3-phosphate (PI3P) binding sites. When transiently expressed in onion epidermal cells, the MdATG18a–GFP fusion protein was localized in the nucleus and cell membrane. Prediction of a 1824 bp promoter region cloned from apple genome DNA indicated several key cis-regulatory elements involved in plant responses to abiotic stresses. MdATG18a was expressed in all tested tissues and showed obvious up-regulation under leaf senescence, drought, heat, oxidative stress, nitrogen starvation or ER stress. Taken together, our findings suggest that MdATG18a plays a role in responses to leaf senescence and abiotic stresses, which might be indicative of autophagy involved in mechanism regulation for stress tolerance in apple." @default.
- W2066882034 created "2016-06-24" @default.
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- W2066882034 date "2009-01-01" @default.
- W2066882034 modified "2023-09-23" @default.
- W2066882034 title "Protrudin and sphingolipid regulate neuronal function via vesicular trafficking" @default.
- W2066882034 doi "https://doi.org/10.1016/j.neures.2009.09.024" @default.
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