Table 2.

Structures of unique muropeptides recovered from cwlD mutant spores

	Peak*
	1A	7A	13A
NAG†	1  (1)	1  (2)	1  (3)
NAM†	1.0  (1)	1.0  (2)	1.2  (3)
Alanine†	1.1  (1)	1.7  (3)	2.2  (6)
Glutamic acid†	1.2  (1)	1.4  (2)	1.4  (3)
Dpm†	1.2  (1)	1.4  (2)	1.4  (3)
Glycine†	1.0  (1)	0.6  (1)	0
Predicted structure	DS-TriP-gly	DS-TriP-gly-DS-TP	DS-TP-DS-TP-DS-TP
(M-H)− calc. m/z‡	926.9	1849.8	2788.8
(M-H)− obs. m/z‡	926.5	1851.0	2787.8

^*Peaks are numbered as in Fig. 3 B and D. All nanomole values determined using amino acid and amino sugar analyses (11) are normalized to NAG = 1. Values in parentheses are predicted molar ratios. 

^†In nanomoles. 

^‡(M-H)⁻ is the deprotonated molecular ion observed in the negative ion mode. Calc. m/z is the mass/charge predicted from the amino acid/amino sugar analyses. Below m/z 2000 monoisotopic mass values are given; above m/z 2000 average mass values are given. Obs. m/z is the matrix-assisted laser desorption ionization time-of-flight mass spectrometry measured value.