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Trends Genet. 1997 Aug;13(8):314-8.

Chromatin-silencing mechanisms in Drosophila maintain patterns of gene expression.

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Department of Zoology, University of Geneva, Switzerland.


The Polycomb-Group proteins form chromatin complexes that can silence gene expression over large distances. The formation of these complexes at homeotic genes depends on early developmental events but the repressed state is then maintained through many cell divisions. In vivo, complexes formed at one genomic site can interact with those at other sites, suggesting that they, like heterochromatin complexes, affect the folding of chromatin and the organization of chromosomes in the nucleus.

[Indexed for MEDLINE]

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