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Phenotypic reversal in dam mutants of Escherichia coli K-12 by a recombinant plasmid containing the dam+ gene. |
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| Authors: | J A Arraj and M G Marinus |
| 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. |
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