Table 1. ¹H and ¹³C NMR data (δ, ppm, D₂O, 27°C, 500 MHz) for the deacetylated polysaccharide from ΔwzaX ΩpilA concentrated supernatant.

Sugar	Nucleus	H/C 1	H/C 2	H/C 3	H/C 4	H/C 5	H/C 6
4-β-d-ManNAc (residue A)	1H	4.90	4.36	3.90	3.67	3.47	3.74; 3.86
	13C	97.2	53.9	71.8	77.6	75.9	61.2
4-β-d-ManNAcA (residue B)	1H	4.83	4.55	3.86	3.74	3.74
	13C	100.4	53.8	71.6	78.9	77.3
4-β-d-ManNAcA (residue C)	1H	4.70	4.45	3.83	3.74	3.74
	13C	99.8	54.0	71.6	78.9	77.3
3-β-d-ManNAcA (residue D)	1H	4.66	4.57	3.96	3.58	3.68
	13C	99.7	51.1	78.4	68.6	77.6

NAc signals (CH₃): 2.02/23.2; 2.02/23.2; 2.05/23.3; 2.06/23.3 ppm.

Abbreviations: d-ManNAc, N-acetyl-d-mannosamine; d-ManNAcA, N-acetyl-d-mannosaminuronic acid; ppm, parts per million.