Initiation of DNA replication in nuclei and purified DNA by a cell-free extract of Xenopus eggs

Blow, J. Julian and Laskey, Ronald A. (1986) Initiation of DNA replication in nuclei and purified DNA by a cell-free extract of Xenopus eggs. Cell, 47 (4). pp. 577-587. ISSN 0092-8674

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Abstract

We demonstrate that cell-free extracts prepared from activated eggs of X. laevis by a method similar to that of Lohka and Masui initiate and complete semiconservative DNA replication of sperm nuclei and plasmid DNA. The efficiency of replication is comparable to that in the intact egg. Under optimal conditions 70%-100% of nuclei, and up to 38% of naked DNA molecules replicate completely. Genuine initiation of replication occurs rather than elongation of preformed primers or priming of irreversibly denatured templates. Rereplication of templates is observed under certain conditions. In addition to replicating DNA, these extracts also assemble nucleus-like structures from naked DNA.

Item Type:	Article
Faculty \ School:
Depositing User:	LivePure Connector
Date Deposited:	11 Jun 2024 11:30
Last Modified:	11 Jun 2024 11:30
URI:	https://ueaeprints.uea.ac.uk/id/eprint/95573
DOI:	10.1016/0092-8674(86)90622-7

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