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• W2168920565 abstract "MSH5 is a MutS-homologous protein required for meiotic DNA recombination. In addition, recent studies suggest that the human MSH5 protein (hMSH5) participates to mitotic recombination and to the cellular response to DNA damage and thus raise the possibility that a tight control of hMSH5 function(s) may be important for genomic stability. With the aim to characterize mechanisms potentially involved in the regulation of hMSH5 activity, we investigated its intracellular trafficking properties. We demonstrate that hMSH5 possesses a CRM1-dependent nuclear export signal (NES) and a nuclear localization signal that participates to its nuclear targeting. Localization analysis of various mutated forms of hMSH5 by confocal microscopy indicates that hMSH5 shuttles between the nucleus and the cytoplasm. We also provide evidence suggesting that hMSH5 stability depends on its subcellular compartmentalization, hMSH5 being much less stable in the nucleus than in the cytoplasm. Together, these data suggest that hMSH5 activity may be regulated by nucleocytoplasmic shuttling and nuclear proteasomal degradation, both of these mechanisms contributing to the control of nuclear hMSH5 content. Moreover, data herein also support that in tissues where both hMSH5 and hMSH4 proteins are expressed, hMSH5 might be retained in the nucleus through masking of its NES by binding of hMSH4." @default.
• W2168920565 created "2016-06-24" @default.
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• W2168920565 date "2010-02-25" @default.
• W2168920565 modified "2023-09-26" @default.
• W2168920565 title "hMSH5 is a nucleocytoplasmic shuttling protein whose stability depends on its subcellular localization" @default.
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• W2168920565 doi "https://doi.org/10.1093/nar/gkq098" @default.
• W2168920565 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/2887964" @default.
• W2168920565 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/20185565" @default.
• W2168920565 hasPublicationYear "2010" @default.
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