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Comparative Study
. 1989 Feb;8(2):527-37.
doi: 10.1002/j.1460-2075.1989.tb03407.x.

Dominant and specific repression of Xenopus oocyte 5S RNA genes and satellite I DNA by histone H1

A P Wolffe  1
Affiliations
Comparative Study

Dominant and specific repression of Xenopus oocyte 5S RNA genes and satellite I DNA by histone H1

A P Wolffe. EMBO J. 1989 Feb.

Abstract

The genome of Xenopus laevis contains two large families of class III genes (oocyte 5S RNA and satellite I DNA) that are repressed in somatic cells. Both gene families are actively transcribed in a soluble extract of X.laevis oocyte nuclei, using chromatin deficient in histone H1 as a template. The addition of histone H1, to this transcriptionally active chromatin, results in the dominant and selective repression of oocyte 5S RNA genes and satellite I DNA. Somatic 5S RNA genes remain active following histone H1 addition. Changes in chromatin structure could have a dominant role in the regulation of class III gene expression during Xenopus embryogenesis.

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