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  • Title: Complementation and hybridization evidence for additional families of type I DNA restriction and modification genes in Salmonella serotypes.
    Author: Ryu J, Rajadas PT, Bullas LR.
    Journal: J Bacteriol; 1988 Dec; 170(12):5785-8. PubMed ID: 3056913.
    Abstract:
    Of eight Salmonella, serB-linked hsd genes for the restriction and modification of DNA transferred to Escherichia coli/Salmonella hybrids, only two--those with SM and ST (S. muenchen and S. thompson, respectively) specificities--may have weakly complemented rSB- and none complemented rK-. An A-specific DNA probe failed to hybridize to HindIII-restricted fragments of each of the hybrids, but an SB (S. typhimurium)-specific probe hybridized to DNA from the hybrid with ST specificity. These results indicate that additional families of the type I hsd genes may exist.
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