Abstract
A recombinant plasmid, pMQ3, carrying the dam gene of Escherichia coli K-12, was constructed and transformed into dam+ and dam- strains. Both dam- and dam+ strains containing pMQ3 showed a wild phenotype for all traits, including mutation rate, except for a 10-fold increase in DNA adenine methylase activity.
Publication types
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Research Support, Non-U.S. Gov't
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Cloning, Molecular
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DNA (Cytosine-5-)-Methyltransferases / genetics*
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DNA, Recombinant
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Escherichia coli / enzymology
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Escherichia coli / genetics*
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Genes, Bacterial*
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Methyltransferases / genetics*
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Mutation
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Phenotype
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Plasmids
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Site-Specific DNA-Methyltransferase (Adenine-Specific)
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Transformation, Bacterial*
Substances
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DNA, Recombinant
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Methyltransferases
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DNA (Cytosine-5-)-Methyltransferases
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Site-Specific DNA-Methyltransferase (Adenine-Specific)