Figure 2

Growth curves of S. pneumoniae strain D39 in presence or absence of AmiA or AliA peptide ligands. Growth was monitored in the absence of peptides or the presence of 0.5Â mg/ml AmiA peptide ligand AKTIKITQTR, AmiA peptide ligand lacking the final amino acid (peptide 1 in Table 1), AliA peptide ligand FNEMQPIVDRQ, and the longer (15 amino acids) version of AliA peptide ligand (peptide 9 in Table 1). Growth was measured in peptide-free chemically defined medium (CDM) by measuring optical density (OD) over time. Results represent 3 independent experiments, error bars indicate SEM.