| Literature DB >> 2216769 |
G Almouzni1, D J Clark, M Méchali, A P Wolffe.
Abstract
Replicating single-stranded DNA is preferentially assembled into chromatin in Xenopus egg extracts relative to non-replicating double-stranded DNA. We have examined the molecular basis of this phenomenon. Single-stranded DNA itself is not a favored template for nucleosome assembly in comparison to double-stranded DNA. Complementary strand synthesis is required for the rapid assembly of nucleosomes. We present evidence that the assembly of chromatin on replicating DNA is a two step phenomenon. The first step involves the replication of DNA and the assembly of an intermediate structure, the second step involves the sequestration of histones H2A/H2B onto DNA. Histones H2A/H2B are preferentially sequestered onto replicated DNA in comparison to non-replicated DNA incubated in the extract.Entities:
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Year: 1990 PMID: 2216769 PMCID: PMC332312 DOI: 10.1093/nar/18.19.5767
Source DB: PubMed Journal: Nucleic Acids Res ISSN: 0305-1048 Impact factor: 16.971