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- W2977117818 abstract "Abstract Histone variants, present in various cell types and tissues, are known to exhibit different functions. For example, histone H3.3 and H2A.Z are both involved in gene expression regulation, whereas H2A.X is a specific variant that responds to DNA double-strand breaks. In this study, we characterized H4G, a novel hominidae-specific histone H4 variant. We found that H4G is expressed in a variety of human cell lines and exhibit tumor-stage dependent overexpression in tissues from breast cancer patients. We found that H4G localized primarily to the nucleoli of the cell nucleus. This localization was controlled by the interaction of the alpha-helix 3 of the histone fold motif with a histone chaperone, nucleophosmin 1. In addition, we found that modulating H4G expression affects rRNA expression levels, protein synthesis rates and cell-cycle progression. Our data suggest that H4G expression alters nucleolar chromatin in a way that enhances rDNA transcription in breast cancer tissues." @default.
- W2977117818 created "2019-10-03" @default.
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- W2977117818 date "2019-06-20" @default.
- W2977117818 modified "2023-10-11" @default.
- W2977117818 title "A novel histone H4 variant H4G regulates rDNA transcription in breast cancer" @default.
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- W2977117818 doi "https://doi.org/10.1093/nar/gkz547" @default.
- W2977117818 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6895281" @default.
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- W2977117818 hasPublicationYear "2019" @default.
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