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The Hemimethylated Replication Origin of Escherichia Coli Can Be Initiated in Vitro

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Journal J Bacteriol
Specialty Microbiology
Date 1991 Jul 1
PMID 2066345
Citations 7
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Abstract

Unmethylated, fully methylated, and hemimethylated oriC-containing plasmids were assayed as substrates for DNA replication in vitro by using a system reconstituted with pure proteins. In contrast to the in vivo situation, all three substrates were initiated efficiently; the fully methylated plasmid was about twice as active as the other two.

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Evidence of two levels of control of P1 oriR and host oriC replication origins by DNA adenine methylation.

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