TABLE 3.
Muropeptide peak identification
| Namea | Structureb | Enzymatic origin |
|---|---|---|
| N | TS-TP | Muramidase |
| U | HS-TP-Ac | Muramidase |
| aG4 | TriS-TP | N-acetylglucosaminidase + muramidase |
| aG5 | TriS-Ala | N-acetylglucosaminidase + muramidase |
| aG6 | TS-TP NAGr | N-acetylglucosaminidase |
| aG7 | TS-Ala NAGr | N-acetylglucosaminidase |
| aG7a | TS-TP anhydro | Lytic transglycosylase |
| aG7b | TS-Ala anhydro | Lytic transglycosylase |
| aG8 | PS-TP-Ac | N-acetylglucosaminidase + muramidase |
| aG10u | HS-TP-Ac NAGr | N-acetylglucosaminidase |
| aG12 | HS-Ala-Ac NAGr | N-acetylglucosaminidase |
| aG13 | HS-TP NAGr | Cortex, N-acetylglucosaminidase |
a
Muropeptide names are as previously published (7, 11). Muropeptide names preceded by “a” indicate those generated by B. anthracis in order to differentiate them from those generated by other species.
b
TS, tetrasaccharide (NAG-MδL-NAG-NAM); HS, hexasaccharide (NAG-MδL-NAG-MδL-NAG-NAM); TriS, trisaccharide (MδL-NAG-NAM); PS, pentasaccharide (MδL-NAG-MδL-NAG-NAM); TP, tetrapeptide (Ala-Glu-Dpm-Ala); Ac, deacetylated glucosamine; NAGr, NAG at the reducing end. “Anhydro” indicates that the NAM at the reducing end is in the anhydro form.