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. 1979 Feb;6(2):645–656. doi: 10.1093/nar/6.2.645

DNA-histone interaction in the vicinity of replication points.

E J Schlaeger, R Knippers
PMCID: PMC327718  PMID: 424308

Abstract

Chromatin replication was studied in isolated nuclei from Concanavalin A activated lymphocytes. Digestion with micrococcal nuclease revealed that the resistant fraction of in vitro replicated DNA is associated with nucleosomes. Earlier experiments had shown that the nuclease resistant fraction of nascent DNA is composed of fragments which are shorter than the nuclease resistant fragments of bulk DNA. In this communication we demonstrate that the short fragments of nascent DNA are differently bound to nucleosome like structures compared to bulk DNA. At 0.5 M NaCl a fraction of pulse labeled labeled DNA is released from these structures and appears as free double stranded DNA of about 140 base pair length (5S DNA) while the 185 pair fragments of mature replicated DNA remain attached to nucleosomes under these conditions. The experiments may indicate that the interaction of a fraction of replicating DNA with histones differs from that of bulk DNA.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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