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“ Penicillin inhibits the incorporation of D- and L-alanine N-acetylglucosamine at concentrations in excess of 10 mug of penicillin per ml; however, minicells are insensitive to penicillin-induced lysis.”
“Rather unexpectedly, penicillin also inhibited markedly, though incompletely, the incorporation of GlcNAc and of MurNAc-pentapeptide into the preexisting peptidoglycan.”
Annals of the New York Academy of Sciences • 1974 | View Paper
“ Penicillin not only strongly inhibits release of D-alanine (98% at 1 mug/ml), but also markedly inhibits incorporation of acetylglucosamine and N-acetylmuramic acid-pentapeptide into the preformed cell-wall peptidoglycan.”