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Deduced amino acid substitutions in five high-molecular-mass PBPs from GBS isolates. Residues mutated in PBPs from penicillin-insusceptible strains are shaded. Strain 2603 V/R is ATCC BAA-611, and strain NEM316 is ATCC 12403. PEN, penicillin; AMP, ampicillin; CTX, cefotaxime.
