TABLE 1.

Muropeptide peaks derived from spore PG

Peaka	Structureb	Reference for structure	Amino acids released during hydrazinolysis
1	DS-TriP	14	Dpm
1A	DS-TriP-Gly	15	Gly
2	DS-Ala	14	Ala
3	DS-TP	14	Ala
3A	DS-TP-Gly	Table 2	Gly, Ala
3B	DS-TP-Ala	Table 2	Ala
4	DS-TP-TP	14
5	TS-TP (open lactam)	1, 14
6	TS-TP (reduced lactam)	14
7	TS-Ala (reduced lactam)	14
7A	DS-TriP-Gly-DS-TP	15	Gly
8	DS-TriP-DS-TP	14	Dpm
8A	DS-TP-Gly-DS-TP	Table 2	Gly
9	DS-TP-DS-TP	14	Ala
9A	DS-TP-Ala-DS-TP	Table 2	Ala
10	TS-TP	14
11	TS-TP-TP	14
12	DS-TP-TS-TP (reduced lactam)	14
13	TS-Ala	14
13A	DS-TP-DS-TP-DS-TP	15
13B	DS-TP-DS-TP-DS-TP-(Ala)	Table 2
13C	DS-TP-DS-TP-DS-TP-DS-TP	Table 2
14	DS-TP-TS-TP	14
17	TS-TP-TS-TP	14
18	HS-TP	14
19	HS-Ala	14
20	TS-TP-HS-TP	14

^aPeaks are numbered as shown in Fig. 1. 

^bAbbreviations: HS, hexasaccharide; TS, tetrasaccharide. Where multiple saccharide moieties are indicated they are cross-linked via their peptide side chains with the first peptide providing the acceptor Dpm. The placement of an Ala residue in parentheses in muropeptide 13B indicates that this residue could be on either the first or second acceptor peptide.