PMID:10542186
| Citation |
Kita, K, Tsuda, J, Kato, T, Okamoto, K, Yanase, H and Tanaka, M (1999) Evidence of horizontal transfer of the EcoO109I restriction-modification gene to Escherichia coli chromosomal DNA. J. Bacteriol. 181:6822-7 |
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| Abstract |
A DNA fragment carrying the genes coding for EcoO109I endonuclease and EcoO109I methylase, which recognize the nucleotide sequence 5'-(A/G)GGNCC(C/T)-3', was cloned from the chromosomal DNA of Escherichia coli H709c. The EcoO109I restriction-modification (R-M) system was found to be inserted between the int and psu genes from satellite bacteriophage P4, which were lysogenized in the chromosome at the P4 phage attachment site of the corresponding leuX gene observed in E. coli K-12 chromosomal DNA. The sid gene of the prophage was inactivated by insertion of one copy of IS21. These findings may shed light on the horizontal transfer and stable maintenance of the R-M system. |
| Links | |
| Keywords |
Amino Acid Sequence; Base Sequence; Chromosome Mapping; Chromosomes, Bacterial; Cloning, Molecular; DNA Restriction-Modification Enzymes/chemistry; DNA Restriction-Modification Enzymes/genetics; Deoxyribonucleases, Type II Site-Specific/chemistry; Deoxyribonucleases, Type II Site-Specific/genetics; Escherichia coli/enzymology; Escherichia coli/genetics; Genes, Bacterial; Molecular Sequence Data; Sequence Analysis, DNA |
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