Abstract :
[en] Although the rate of acylation of a penicillin-resistant form of Streptococcus pneumoniae PBP2x by ceftaroline is 80-fold lower than that of its penicillin-sensitive counterpart, it remains sufficiently high (k(2)/K = 12600 M(-1)s(-1)) to explain the sensitivity of the penicillin-resistant strain to this new cephalosporin. Surprisingly, the Actinomadura R39 DD-peptidase is not very sensitive to ceftaroline.
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