ArticleMolecular cell2025
Deubiquitinases cleave ubiquitin-fused ribosomal proteins and physically counteract their targeting to the UFD pathway.
Article in Molecular cell, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
1 citing paper in PubMed.
- Substrate biasing in UCHL5 proteoforms.bioRxiv : the preprint server for biology · 2026Article
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7 authors.
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Abstract
In eukaryotes, each ribosomal subunit includes a ribosomal protein (RP) that is encoded as a fusion protein with ubiquitin (Ub). In yeast, each Ub-RP fusion requires processing by deubiquitylating enzymes (DUBs) to generate ribosome assembly-competent RPs and contribute to the cellular Ub pool. However, how Ub-RP fusions are processed by DUBs in human cells remains unclear. Here, we discovered that Ub-RPs are substrates of the Ub-fusion degradation (UFD) pathway in human cells via lysine 29 and 48 (K29/K48)-specific ubiquitylation and proteasomal degradation. We identified a pool of DUBs that catalytically process Ub-RPs, as well as DUBs that physically occlude Ub-RP interaction with UFD pathway Ub E3 ligases to prevent their degradation in a non-catalytic manner. Our results suggest that DUBs both process and stabilize Ub-RPs, whereas the UFD pathway regulates levels of Ub-RPs that cannot be fully processed by DUBs to fine-tune protein homeostasis.
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