Sex- and tissue-specific, but hormonally independent, demethylation at the 3'-end of Xenopus vitellogenin gene B1

We describe three HpaII-specifying sequences in 6 kbp of DNA at the 3'-end of Xenopus vitellogenin gene B1 (two within the coding sequence and one downstream) which remain methylated in all tissues of adult male Xenopus. These sites are however fully demethylated exclusively in adult female Xen...

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Veröffentlicht in:FEBS letters 1984-12, Vol.178 (2), p.217-222
Hauptverfasser: Ng, Wee Chit, Baker, Betty S., Tata, Jamshed R.
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Tata, Jamshed R.
description We describe three HpaII-specifying sequences in 6 kbp of DNA at the 3'-end of Xenopus vitellogenin gene B1 (two within the coding sequence and one downstream) which remain methylated in all tissues of adult male Xenopus. These sites are however fully demethylated exclusively in adult female Xenopus liver parenchymal cells but not in oviduct, kidney or erythrocytes. Developmental studies suggest that this tissue- and sex-specific demethylation may occur gradually after metamorphosis. The methylation of these 3'-sites is independent of transcriptional activation by oestrogen of vitellogenin genes in male or female Xenopus.
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source MEDLINE; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Access via ScienceDirect (Elsevier); Alma/SFX Local Collection
subjects Animals
Biological and medical sciences
DNA - metabolism
DNA methylation
DNA Restriction Enzymes
Erythrocytes - metabolism
Estradiol - pharmacology
Estrogen
Female
Fundamental and applied biological sciences. Psychology
Genes. Genome
Kidney - metabolism
Lipoproteins - genetics
Liver - metabolism
Male
Methylation
Molecular and cellular biology
Molecular genetics
Oviducts - metabolism
Sex Factors
Sex-specificity
Tissue-specificity
Transcription, Genetic - drug effects
Vitellogenin gene expression
Vitellogenins - genetics
Xenopus
Xenopus - growth & development
title Sex- and tissue-specific, but hormonally independent, demethylation at the 3'-end of Xenopus vitellogenin gene B1
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