Expression of a DNA strand initiation sequence of ColE1 plasmid in a single-stranded DNA phage.
Open Access
- 1 November 1980
- journal article
- research article
- Published by Proceedings of the National Academy of Sciences in Proceedings of the National Academy of Sciences
- Vol. 77 (11) , 6566-6570
- https://doi.org/10.1073/pnas.77.11.6566
Abstract
To investigate initiation of H-strand (lagging strand) replication of the [Escherichia coli] plasmid ColE1, the origin region fragment (HaeII-E) of ColE1 was inserted into the intergenic region of filamentous DNA phage M13 and cloned. A site capable of promoting DNA strand initiation on a single-stranded DNA template was detected on the L-strand (leading strand) of the cloned fragment. The site, named rri-1 (rifampicin-resistant initiation), directs conversion of chimeric phage single-stranded DNA to parental replicative form in the presence of rifampicin, which blocks the function of the complementary strand origin of M13. The function of rri-1 is dependent on both the dnaG and dnaB gene products. It is postulated that rri-1 might be an initiation site for synthesis of the lagging DNA strand during unidirectional replication of ColE1 DNA.This publication has 32 references indexed in Scilit:
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