Abstract
Streptomyces cyaneus genomic DNA ligated into either λ phage or plasmid vectors was very inefficiently cloned into standard Escherichia coli host strains. However, the same material could be efficiently cloned using Mcr-deficient E. coli strains. These results suggest that the S. cyaneus genome contains 5-methylcytosine residues, some of which occur within the recognition sequences of the E. coli Mcr restriction system.
Original language | English |
---|---|
Pages (from-to) | 127-129 |
Number of pages | 2 |
Journal | Gene |
Volume | 119 |
Issue number | 1 |
Publication status | Published - 1992 |
Keywords
- genomic libraries
- methylated DNA
- phage λ vectors
- plasmid vectors
- restriction systems