ArticleChembiochem : a European journal of chemical biology2022
Chemical Regulation of the Protein Quality Control E3 Ubiquitin Ligase C-Terminus of Hsc70 Interacting Protein (CHIP).
Article in Chembiochem : a European journal of chemical biology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed, 10 citations in OpenAlex.
- A novel STUB1 p.(Gln118*) nonsense variant in compound heterozygosity causes autosomal recessive spinocerebellar ataxia type 16 in a Chinese patient.BMC neurology · 2026Article
- HSP-1-specific nanobodies alter chaperone function in vitro and in vivo.The Journal of biological chemistry · 2026Article
- Ubiquitin E3 Ligases and p53 in Doxorubicin-Induced Cardiotoxicity.International journal of molecular sciences · 2025Review
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Authors and funding
8 authors at 3 institutions in 1 country.
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Abstract
The ubiquitin ligase C-terminus of Hsc70 interacting protein (CHIP) is an important regulator of proteostasis. Despite playing an important role in maintaining proteostasis, little progress has been made in developing small molecules that regulate ubiquitin transfer by CHIP. Here we used differential scanning fluorimetry to identify compounds that bound CHIP. Compounds that bound CHIP were then analyzed by quantitative ubiquitination assays to identify those that altered CHIP function. One compound, MS.001, inhibited both the chaperone binding and ubiquitin ligase activity of CHIP at low micromolar concentrations. Interestingly, we found that MS.001 did not have activity against isolated U-box or tetratricopeptide (TPR) domains, but instead only inhibited full-length CHIP. Using in silico docking we identified a potential MS.001 binding site on the linker domain of CHIP and mutation of this site rendered CHIP resistant to MS.001. Together our data identify an inhibitor of the E3 ligase CHIP and provides insight into the development of compounds that regulate CHIP activity.
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Registered trials
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