ArticleBiochemistry and biophysics reports2024
Uncovering the mechanisms of MuRF1-induced ubiquitylation and revealing similarities with MuRF2 and MuRF3.
Article in Biochemistry and biophysics reports, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.
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Who cites it
9 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Biomarkers of Skeletal Muscle Atrophy Based on Atrogenes Evaluation: A Systematic Review and Meta-Analysis Study.International journal of molecular sciences · 2025Pooled it
- iPLAScience advances · 2026Article
- Systemic Drivers and Molecular Mechanisms of Sarcopenia in Aetiology-Specific End-Stage Liver Disease.Journal of cachexia, sarcopenia and muscle · 2026Observational
- Neuromuscular Mechanisms and Oxidative Stress in Skeletal Muscle Atrophy: Emerging Stem Cell and Gene-Based Therapeutic Strategies.Muscles (Basel, Switzerland) · 2026Review
- Structure predictions of MuRF1-UBE2 complexes identify amino acid residues governing interaction selectivity for each MuRF1-E2 pair.The FEBS journal · 2025Article
- HCM-Associated MuRF1 Variants Compromise Ubiquitylation and Are Predicted to Alter Protein Structure.International journal of molecular sciences · 2025Article
- α Protein Kinase 3 Is Essential for Neonatal and Adult Cardiac Function.Journal of the American Heart Association · 2025Article
- Optoacoustic imaging of the brain in a cachexia-inducing pancreatic cancer xenograft.Frontiers in oncology · 2025Article
- The role of ubiquitin-conjugating enzyme in the process of spermatogenesis.Reproductive biology and endocrinology : RB&E · 2024Review
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Authors and funding
10 authors.
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No grant is acknowledged in the PubMed record.
Abstract
MuRF1 (Muscle-specific RING finger protein 1; gene name TRIM63) is a ubiquitin E3 ligase, associated with the progression of muscle atrophy. As a RING (Really Interesting New Gene) type E3 ligase, its unique activity of ubiquitylation is driven by a specific interaction with a UBE2 (ubiquitin conjugating enzyme). Our understanding of MuRF1 function remains unclear as candidate UBE2s have not been fully elucidated. In the present study, we screened human ubiquitin dependent UBE2s in vitro and found that MuRF1 engages in ubiquitylation with UBE2D, UBE2E, UBE2N/V families and UBE2W. MuRF1 can cause mono-ubiquitylation, K48- and K63-linked polyubiquitin chains in a UBE2 dependent manner. Moreover, we identified a two-step UBE2 dependent mechanism whereby MuRF1 is monoubiquitylated by UBE2W which acts as an anchor for UBE2N/V to generate polyubiquitin chains. With the in vitro ubiquitylation assay, we also found that MuRF2 and MuRF3 not only share the same UBE2 partners as MuRF1 but can also directly ubiquitylate the same substrates: Titin (A168-A170), Desmin, and MYLPF (Myosin Light Chain, Phosphorylatable, Fast Skeletal Muscle; also called Myosin Light Regulatory Chain 2). In summary, our work presents new insights into the mechanisms that underpin MuRF1 activity and reveals overlap in MuRF-induced ubiquitylation which could explain their partial redundancy in vivo.
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