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The mouse histone H1 genes: gene organization and differential regulation.

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Affiliations

  • 1. Department of Biology, University of North Carolina at Chapel Hill 27599, USA.
      Authors
    • Wang ZF 1
    (1 author)

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Journal of Molecular Biology, 01 Aug 1997, 271(1):124-138
https://doi.org/10.1006/jmbi.1997.1166 PMID: 9300059 

Abstract 

There are six mouse histone H1 genes present in the histone gene cluster on mouse chromosome 13. These genes encode five histone H1 variants expressed in somatic cells, H1a to H1e, and the testis-specific H1t histone. Two of the genes that have not been assigned previously to the five somatic H1 subtypes have been identified as encoding the H1b and H1d subtypes. Three of the H1 genes, H1a, H1c and H1t, are present on an 80 kb segment of DNA that contains nine core histone genes. Two others, H1d and H1e, are present in a second patch, while the H1b gene is at least 500 kb away in a patch containing 14 core histone genes. The histone H1 genes are differentially expressed. All five genes for the somatic histone H1 proteins are expressed in exponentially growing cells. However, the levels of H1a, H1b and H1d mRNAs are greatly reduced in cells that are terminally differentiated or arrested in G0, while the H1c and H1e mRNAs continue to be expressed. In addition to the major RNA that ends at the stem-loop, the H1c gene expresses a longer, polyadenylated mRNA in differentiated cells, although in varying amounts. None of the other histone H1 genes encodes detectable amounts of polyadenylated mRNAs.

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Read article at publisher's site: https://doi.org/10.1006/jmbi.1997.1166

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