期刊
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
卷 20, 期 11, 页码 -出版社
MDPI
DOI: 10.3390/ijms20112668
关键词
dual-specificity phosphatase; mitogen-activated protein kinase; ubiquitination; protein stability
资金
- National Health Research Institutes, Taiwan [IM-107-PP-01, IM-107-SP-01]
- Ministry of Science and Technology, Taiwan [107-2314-B-400-027, 107-2321-B-400-013, 107-2628-B-400-001]
Mitogen-activated protein kinases (MAPKs) are key regulators of signal transduction and cell responses. Abnormalities in MAPKs are associated with multiple diseases. Dual-specificity phosphatases (DUSPs) dephosphorylate many key signaling molecules, including MAPKs, leading to the regulation of duration, magnitude, or spatiotemporal profiles of MAPK activities. Hence, DUSPs need to be properly controlled. Protein post-translational modifications, such as ubiquitination, phosphorylation, methylation, and acetylation, play important roles in the regulation of protein stability and activity. Ubiquitination is critical for controlling protein degradation, activation, and interaction. For DUSPs, ubiquitination induces degradation of eight DUSPs, namely, DUSP1, DUSP4, DUSP5, DUSP6, DUSP7, DUSP8, DUSP9, and DUSP16. In addition, protein stability of DUSP2 and DUSP10 is enhanced by phosphorylation. Methylation-induced ubiquitination of DUSP14 stimulates its phosphatase activity. In this review, we summarize the knowledge of the regulation of DUSP stability and ubiquitination through post-translational modifications.
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