ArticleHuman molecular genetics2024
PSMC5 insufficiency and P320R mutation impair proteasome function.
Article in Human molecular genetics, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Lysine deficiency within a conserved lysine desert is critical for EEL-1/HUWE1 to support ubiquitin proteasome system function.PLoS genetics · 2026Article
- Molecular mechanisms in rare proteasomopathies.EULAR rheumatology open · 2026Review
- Analysis of Transcriptome and Differentially Expressed Genes in Chicken Primordial Germ Cells.Animals : an open access journal from MDPI · 2026Article
- PSMC5 Orchestrates an Immunosuppressive Niche and Metastasis in Colorectal Cancer via SMURF1-Mediated K11-Linked Ubiquitination of METTL14.International journal of biological sciences · 2026Article
- Lysine deficiency within a conserved lysine desert is critical for EEL-1/HUWE1 to support ubiquitin proteasome system function.bioRxiv : the preprint server for biology · 2025Article
- Joint analysis ofNAR genomics and bioinformatics · 2025Article
- Strengthening the Role ofInternational journal of molecular sciences · 2025Article
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Authors and funding
13 authors.
Funding
Abstract
The ubiquitin-proteasome system mediates the degradation of a wide variety of proteins. Proteasome dysfunction is associated with neurodegenerative diseases and neurodevelopmental disorders in humans. Here we identified mutations in PSMC5, an AAA ATPase subunit of the proteasome 19S regulatory particle, in individuals with neurodevelopmental disorders, which were initially considered as variants of unknown significance. We have now found heterozygotes with the following mutations: P320R (6 individuals), R325W, Q160A, and one nonsense mutation at Q69. We focused on understanding the functional consequence of PSMC5 insufficiency and the P320R mutation in cells and found that both impair proteasome function and activate apoptosis. Interestingly, the P320R mutation impairs proteasome function by weakening the association between the 19S regulatory particle and the 20S core particle. Our study supports that proteasome dysfunction is the pathogenic cause of neurodevelopmental disorders in individuals carrying PSMC5 variants.
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Registered trials
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