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. 1994 Dec 11;22(24):5265–5270. doi: 10.1093/nar/22.24.5265

Re-replication of SV40 minichromosomes is inhibited at the stage of chain elongation.

T Krude 1, A Winter 1, R Knippers 1
PMCID: PMC332070  PMID: 7816615

Abstract

The template activities of protein-free SV40 DNA and SV40 minichromosomes for DNA re-replication are compared in in vitro replication assays. Density substitution experiments and two-dimensional gel electrophoresis show that protein-free DNA can replicate for at least two cycles whereas salt-treated minichromosomes replicate only once. Re-replication of minichromosomes is blocked at the stage of replicative chain elongation suggesting that replicatively assembled chromatin has structural features that prevent a second round of replication.

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Selected References

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