Fig. 5From: Utilization of different MurNAc sources by the oral pathogen Tannerella forsythia and role of the inner membrane transporter AmpGMS2 analysis of supernatant from T. forsythia ΔampG, showing the presence of GlcNAc-anhMurNAc (a) and GlcNAc-MurNAc (b). The parent masses of m/z 479.22 [M + H]+ for GlcNAc-anhMurNAc and m/z 497.19 [M + H]+ for GlcNAc-MurNAc were in accordance with the theoretical masses of m/z 479.19 and m/z 497.20, respectively. The b1-ion (GlcNAc), the y1-ion (MurNAc/anhMurNAc), and the MurNAc signature peaks (denoted by a triangle) support the structural assignmentBack to article page