International Working Group on the Staphylococcal Cassette Chromosome elements (IWG-SCC)

J regions (previously "junkyar regions")

J regions (previously “junkyard regions”)

  • Besides the mec and ccr gene complexes, the SCCmec element also contains three so-called J regions, which constitute non-essential components of the cassette.
  • J regions may carry additional antimicrobial resistance determinants.
  • J1 is the region between the right chromosomal junction and the ccr complex.
  • J2 is between the ccr gene complex and the mec gene complex.
  • J3 is between the mec complex and the left chromosomal junction.
  • Variations in the J regions within the same mec-ccr complex are used for defining SCCmec subtypes.

Link1 | Link2 | Link3

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