ArticleAutophagy2024
UBE3C tunes autophagy via ATG4B ubiquitination.
Article in Autophagy, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed, 19 citations in OpenAlex.
- SLAP controls mTORC2 integrity via UBE3C-mediated non-degradative mLST8 ubiquitination to suppress colorectal tumorigenesis.Cell death and differentiation · 2026Article
- Hydrogen peroxide as a multifaceted regulator of the Atg4 protease and autophagy in the pathogenic fungusFrontiers in fungal biology · 2026Article
- Sorafenib Resistance in Hepatocellular Carcinoma: Emerging Molecular Insights from Long Non-Coding RNAs.Current pharmaceutical design · 2026Review
- Advances in protein ubiquitination modification and immune evasion of breast cancer.Frontiers in cell and developmental biology · 2026Review
- Article
- Deoxynivalenol Exposure Leads to Abnormal Renal Tubular Autophagy Flow.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025Article
- The key regulator circPDE3B promotes arsenic-induced bladder carcinogenesis by affecting STAT3 and NF-κB stability.Cell biology and toxicology · 2025Article
- Air pollution-related immune gene prognostic signature for hepatocellular carcinoma: network toxicology, machine learning and multi-omics analysis.Frontiers in immunology · 2025Article
- Targeting STK26 and ATG4B: miR-22-3p as a modulator of autophagy and tumor progression in HCC.Translational oncology · 2025Article
- UBE3C restricts EV-A71 replication by ubiquitination-dependent degradation of 2C.Journal of virology · 2024Article
- PGD2/PTGDR2 signaling pathway affects the self-renewal capacity of gastric cancer stem cells by regulating ATG4B ubiquitination.Frontiers in oncology · 2024Article
Corrections and comments
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Authors and funding
11 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
ATG4B is a core protein and essential for cleaving precursor MAP1LC3/LC3 or deconjugating lipidated LC3-II to drive the formation of autophagosomes. The protein stability and activity of ATG4B regulated by post-translational modification (ubiquitination) will directly affect macroautophagy/autophagy. However, the mechanism involved in ATG4B ubiquitination is largely unclear. In this study, a new E3 ligase of ATG4B, UBE3C, was identified by mass spectra. UBE3C mainly assembles K33-branched ubiquitin chains on ATG4B at Lys119 without causing ATG4B degradation. In addition, the increased ubiquitination of ATG4B caused by UBE3C overexpression inhibits autophagy flux in both normal and starvation conditions, which might be due to the reduced activity of ATG4B and ATG4B-LC3 interaction. This reduction could be reversed once the lysine 119 of ATG4B was mutated to arginine. More important, under starvation conditions the interaction between ATG4B and UBE3C apparently decreased followed by the removal of the K33-branched ubiquitin chain of ATG4B. Thus, starvation-induced autophagy could be partially suppressed by an increased ubiquitination level of ATG4B. In conclusion, our research reveals a novel modification mode of ATG4B in which UBE3C can fine tune ATG4B activity by specific ubiquitination regulating autophagy without causing ATG4B degradation.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.