ArticleACS omega2024
Characterizing the Monomer-Dimer Equilibrium of UbcH8/Ube2L6: A Combined SAXS and NMR Study.
Article in ACS omega, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
What it found
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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.
- Bromodomain dimers: A case study of BRD4 and family-wide AlphaFold predictions.Structural dynamics (Melville, N.Y.) · 2026Article
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Authors and funding
11 authors.
Funding
Abstract
Interferon-stimulated gene-15 (ISG15) is an interferon-induced protein with two ubiquitin-like (Ubl) domains linked by a short peptide chain and is a conjugated protein of the ISGylation system. Similar to ubiquitin and other Ubls, ISG15 is ligated to its target proteins through a series of E1, E2, and E3 enzymes known as Uba7, Ube2L6/UbcH8, and HERC5, respectively. Ube2L6/UbcH8 plays a central role in ISGylation, underscoring it as an important drug target for boosting innate antiviral immunity. Depending on the type of conjugated protein and the ultimate target protein, E2 enzymes have been shown to function as monomers, dimers, or both. UbcH8 has been crystallized in both monomeric and dimeric forms, but its functional state remains unclear. Here, we used a combined approach of small-angle X-ray scattering (SAXS) and nuclear magnetic resonance (NMR) spectroscopy to characterize UbcH8's oligomeric state in solution. SAXS revealed a dimeric UbcH8 structure that could be dissociated when fused N-terminally to glutathione S-transferase. NMR spectroscopy validated the presence of a concentration-dependent monomer-dimer equilibrium and suggested a back-side dimerization interface. Chemical shift perturbation and peak intensity analysis further suggest dimer-induced conformational dynamics at the E1 and E3 interfaces, providing hypotheses for the protein's functional mechanisms. Our study highlights the power of combining NMR and SAXS techniques to provide structural information about proteins in solution.
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Registered trials
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