Intermediates in plasmid pT181 DNA replication.

Abstract:

:Staphylococcus aureus plasmid pT181 is thought to replicate via an asymmetric rolling-circle mechanism. By studying pulse labeled replicative intermediates, here we report that pT181 replication involves: (1) a post-replicative hypersupercoiled monomer and (2) a partially replicated intermediate which lacks superhelicity but is unlike a typical rolling-circle intermediate in that only nascent strands of less than unit length are released by alkali denaturation. A model for pT181 replication is proposed to accommodate this apparent discrepancy.

journal_name

Nucleic Acids Res

journal_title

Nucleic acids research

authors

Majumder S,Novick RP

doi

10.1093/nar/16.7.2897

subject

Has Abstract

pub_date

1988-04-11 00:00:00

pages

2897-912

issue

7

eissn

0305-1048

issn

1362-4962

journal_volume

16

pub_type

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