Degadration of mismatch repair hMutSα heterodimer by the ubiquitin-proteasome pathway

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Abstract

Mismatch repair plays a critical role in genome stability. This process requires several proteins including hMSH2/hMSH6 (hMutSα) heterodimer involved in the first stage of the process, the mispair recognition. We previously reported that in U937 and HL-60 cell lines, hMSH2 and hMSH6 protein expression was much lower than that in HeLa and KG1a cells. Here, we showed that the decreased expression of hMutSα results from differences in the degradation rate of both proteins by the ubiquitin-proteasome pathway. Our data suggest that in human cell lines, ubiquitin-proteasome could play an important role in the regulation of hMutSα protein expression, thereby regulating mismatch repair activity. © 2004 Federation of European Biochemical Societies. Published by Elsevier B.V. All rights reserved.

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Hernandez-Pigeon, H., Laurent, G., Humbert, O., Salles, B., & Lautier, D. (2004). Degadration of mismatch repair hMutSα heterodimer by the ubiquitin-proteasome pathway. FEBS Letters, 562(1–3), 40–44. https://doi.org/10.1016/S0014-5793(04)00181-4

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