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Updated: Dec 8, 2025

In Vitro Analysis of E3 Ubiquitin Ligase Function
Published on: May 14, 2021
The E2 ubiquitin-conjugating enzyme UbcH5c: an emerging target in cancer and immune disorders
Yuan Zhou1, Runzhe Chen2, Xiaofang Luo3
1College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China.
Abstract:
Ubiquitination is a crucial post-translational modification (PTM) of proteins and regulates their stabilities and activities, thereby modulating multiple signaling pathways. UbcH5c, a member of the UbcH5 ubiquitin-conjugating enzyme (E2) protein family, engages in the ubiquitination of dozens of proteins and regulates nuclear factor kappa-B (NF-κB), p53 tumor suppressor, and several other essential signaling pathways. UbcH5c has been reported to be abnormally expressed in human cancer and immune disorders and is involved in the initiation and progression of these diseases. In this review, we mainly focus on UbcH5c structure, activity, signaling pathways, and its relevance to cancer and immune disorders. We end by integrating all known factors relating to UbcH5c inhibition as a potential cancer therapy method, and discuss associated challenges.
Insights
UbcH5c, a ubiquitin-conjugating enzyme, regulates key signaling pathways and is implicated in cancer and immune disorders. Inhibiting UbcH5c shows promise as a cancer therapy strategy, despite challenges.
Area of Science:
- Biochemistry
- Molecular Biology
- Cellular Signaling
Background:
- Ubiquitination is a vital post-translational modification (PTM) regulating protein stability and activity.
- UbcH5c, a ubiquitin-conjugating enzyme (E2), targets numerous proteins and influences critical pathways like NF-κB and p53.
- Abnormal UbcH5c expression is linked to human cancers and immune disorders, suggesting its role in disease initiation and progression.
Purpose of the Study:
- To review the structure, activity, and signaling pathways of UbcH5c.
- To explore the relevance of UbcH5c in cancer and immune disorders.
- To discuss UbcH5c inhibition as a potential cancer therapeutic strategy.
Main Methods:
- Literature review focusing on UbcH5c.
- Analysis of UbcH5c's role in cellular signaling.
- Integration of data on UbcH5c's involvement in disease pathogenesis.
Main Results:
- UbcH5c plays a significant role in modulating protein ubiquitination and downstream signaling.
- Dysregulation of UbcH5c is associated with the development and progression of various cancers and immune diseases.
- UbcH5c's involvement in essential cellular processes highlights its therapeutic potential.
Conclusions:
- Understanding UbcH5c's function is crucial for deciphering its role in disease.
- Targeting UbcH5c presents a promising avenue for cancer therapy development.
- Further research is needed to overcome challenges associated with UbcH5c-targeted therapies.
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