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DNA target recognition domains in the Type I restriction and modification systems of Staphylococcus aureus.


ABSTRACT: Staphylococcus aureus displays a clonal population structure in which horizontal gene transfer between different lineages is extremely rare. This is due, in part, to the presence of a Type I DNA restriction-modification (RM) system given the generic name of Sau1, which maintains different patterns of methylation on specific target sequences on the genomes of different lineages. We have determined the target sequences recognized by the Sau1 Type I RM systems present in a wide range of the most prevalent S. aureus lineages and assigned the sequences recognized to particular target recognition domains within the RM enzymes. We used a range of biochemical assays on purified enzymes and single molecule real-time sequencing on genomic DNA to determine these target sequences and their patterns of methylation. Knowledge of the main target sequences for Sau1 will facilitate the synthesis of new vectors for transformation of the most prevalent lineages of this 'untransformable' bacterium.

SUBMITTER: Cooper LP 

PROVIDER: S-EPMC5399793 | biostudies-literature | 2017 Apr

REPOSITORIES: biostudies-literature

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DNA target recognition domains in the Type I restriction and modification systems of Staphylococcus aureus.

Cooper Laurie P LP   Roberts Gareth A GA   White John H JH   Luyten Yvette A YA   Bower Edward K M EKM   Morgan Richard D RD   Roberts Richard J RJ   Lindsay Jodi A JA   Dryden David T F DTF  

Nucleic acids research 20170401 6


Staphylococcus aureus displays a clonal population structure in which horizontal gene transfer between different lineages is extremely rare. This is due, in part, to the presence of a Type I DNA restriction-modification (RM) system given the generic name of Sau1, which maintains different patterns of methylation on specific target sequences on the genomes of different lineages. We have determined the target sequences recognized by the Sau1 Type I RM systems present in a wide range of the most pr  ...[more]

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