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  • Title: Physical map of the Rhodobacter sphaeroides bacteriophage phi RsG1 genome and location of the prophage on the host chromosome.
    Author: Duchrow M, Giffhorn F.
    Journal: J Bacteriol; 1987 Sep; 169(9):4410-4. PubMed ID: 3040695.
    Abstract:
    We constructed a physical map of the 50-kilobase-pair (kb) DNA of the temperate Rhodobacter sphaeroides bacteriophage phi RsG1, with the relative positions of the cleavage sites for the nine restriction endonucleases KpnI, HindIII, XbaI, ClaI, BclI, EcoRV, EcoRI, BglII, and BamHI indicated. Using biotinylated phi RsG1 DNA as a probe in hybridization studies, we detected homologies with virus DNA and fragments of restriction endonuclease-digested host chromosomal DNA but not with plasmid DNA. This indicates that the prophage is integrated into the host chromosome. In addition, the use of specific probes such as the 10.4-kb BglII A fragment and the 2.65-kb BamHI H fragment allowed the determination of the position of phage attachment site (attP).
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