Table 2.

Peptidoglycan compositions of S. aureus isolates

IsolatePhenotypeaM4/M9 ratio% Cross-linking%d-Ala–d-AlaDimer/monomer ratio
523MSSA475.922.02.1
H1MRSA1.57722.21.8
Mu3GISA2.876.722.81.8
Mu3 (P15)MRSA2.476.822.31.6
Mu50GISA2.172.025.71.6
Mu50 (P15)MRSA4.173.325.31.6
NJGISA1.374.924.31.5
NJ (P15)MRSA2.477.621.61.6
MIGISA2.873.925.11.4
MI (P60)MRSA3.975.122.41.2
PCGISA3.581.118.31.9
PC (P15)MRSA3.682.319.52.2
ILMRSA3.979.317.81.6
ILGISA4.381.116.71.6
  • a MSSA, methicillin-susceptible S. aureus; GISA, methicillin-resistant S. aureus that is also intermediately resistant to glycopeptides.