Sequence analysis of the Lactococcus lactis temperate bacteriophage BK5-T and demonstration that the phage DNA has cohesive ends.
1995
Boyce J.D. | Davidson B.E. | Hillier A.J.
The Lactococcus lactis temperate bacteriophage BK5-T is a type phage in the lactococcal phage classification (A.W. Jarvis, G.F. Fitzgerald, M. Mata, A. Mercenier, H. Neve, I. B. Powell, C. Ronda, M. Saxelin, and M. Teuber, Intervirology 32:2-9, 1991). The nucleotide sequence of 18,935 bp of the genome of BK5-T was determined and analyzed for the presence of open reading frames and other structural features. Thirty-two open reading frames longer than 60 codons were identified, and these appeared to be grouped into at least seven transcriptional units. A search of the nucleotide sequence for restriction sites identified a small number of discrepancies with the previously published physical map of the BK5-T genome (G. Lakshmidevi, B.E. Davidson, and A.J. Hillier, Appl. Environ. Microbiol. 54:1039-1045, 1988). Subsequent analysis of restriction digests of BK5-T DNA which were heated prior to electrophoresis indicated that BK5-T DNA was not terminally redundant as previously reported but contained cohesive ends.
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