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. 1988 Oct 11;16(19):9127–9145. doi: 10.1093/nar/16.19.9127

Functional analysis of the leading strand replication origin of plasmid pUB110 in Bacillus subtilis.

J C Alonso 1, H Leonhardt 1, C A Stiege 1
PMCID: PMC338696  PMID: 2845367

Abstract

Supercoiled plasmid DNA is the substrate for initiation of pUB110 replication, and - by inference - for binding of its initiator protein (RepU) to the plasmid replication origin (oriU) in vivo. No hairpin structure is required for RepU-oriU recognition. RepH (the pC194 replication initiation protein) failed to initiate replication in trans at oriU. The nucleotides that determine the specificity of the replication initiation process are located within oriU but termination is unefficient. Therefore the segment that forms the full recognition signal for termination is probably located 3' of the oriU recognition sequence. Two overlapping domains, one for initiation and one required for termination, compose the leading strand replication origin of plasmid pUB110.

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Selected References

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