Table 1.

Cortex peptidoglycan structure in spores of various B. subtilis strains^a

Strain	% of muramic acid with side chain ofb				% glycan chain cross-linking
	MAL	l-Ala	TetraP	TriP
Wild type	50	26	23	1	4
PS2066 (dacB)	46	12	43	2	14
PS2421 (dacB dacF)	40	6	57	5	20
PS2307 (cwlD)	0	33	58	6	8
PS2422 (cwlD dacB)	0	13	80	5	32

^aData were taken from references 15 and 18. Note that because of errors in measurements, the sum of all muramic acid proportions can be greater than 100%.

^bMAL, muramic acid–δ-lactam; l-Ala, l-alanine; TetraP, tetrapeptide; TriP, tripeptide (15, 18).