Article
Modified-cytosine restriction-system-induced recombinant cloning artefacts in Escherichia coli.
Gene - 14 Feb 1993
Williamson M R, Doherty J P, Woodcock D M
Abstract excerpt
We have tested whether, and to what extent, recombinant clones from DNA segments with 5-methylation of cytosines recovered in methylation-restrictive (mcr+) hosts contain mutations. We constructed a model system in which the tetracycline-resistance-encoding gene (tet) from pBR322 was cloned into the plasmid pGEM3Zf+. The central region of tet was removed from the construct, methylated in vitro and then religated...
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