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J Bacteriol. 1988 Jul;170(7):3294-6.

Construction of an Escherichia coli K-12 ada deletion by gene replacement in a recD strain reveals a second methyltransferase that repairs alkylated DNA.

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  • 1Department of Biology, Massachusetts Institute of Technology, Cambridge 02139.

Abstract

We constructed an ada deletion by gene replacement in a recD1014 strain of Escherichia coli. Characterization of a delta ada-25 recD+ strain revealed the presence of a second DNA methyltransferase activity in E. coli K-12 which transfers a methyl group from methylated DNA to a protein with a molecular weight of 18,000 to 20,000.

PMID:
3290202
[PubMed - indexed for MEDLINE]
PMCID:
PMC211286
Free PMC Article
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