Table 1. Negative ion charge deconvoluted electrospray ionization mass spectral data of the core oligosaccharides released by mild acid hydrolysis from LPS of A. hydrohila AH-3ΔwahD, A. hydrohila AH-3ΔwahD (PBAD33-Gm-APJL_0999), A. hydrohila AH-3ΔwahC, and A. hydrohila AH-3ΔwahC (pBAD33-Gm-APJL_1001).

Strain	Molecular mass (Da)		Proposed composition
	observed	calculateda
AH-3ΔwahD	1311.44	1311.43	anh-Kdo, 4 Hep, Hex, HexN
AH-3ΔwahD +APJL_ 0999	1937.59	1937.58	anh-Kdo, 6 Hep, 2 Hex, HexN, P
	1857.62	1857.61	anh-Kdo, 6 Hep, 2 Hex, HexN
	1695.57	1695.56	anh-Kdo, 6 Hep, Hex, HexN
	1503.50	1503.50	anh-Kdo, 5 Hep, Hex, HexN
AH-3ΔwahC	1665.58	1665.55	anh-Kdo, 5 Hep, 2 Hex, HexN
	1503.53	1503.50	anh-Kdo 5 Hep, Hex, HexN
	1311.46	1311.43	anh-Kdo, 4 Hep, Hex, HexN
AH-3ΔwahC + APJL_1001	1937.60	1937.58	anh-Kdo, 6 Hep, 2 Hex, HexN, P
	1857.63	1857.61	anh-Kdo, 6 Hep, 2 Hex, HexN
	1695.57	1695.56	anh-Kdo, 6 Hep, Hex, HexN
	1503.50	1503.50	anh-Kdo, 5 Hep, Hex, HexN

^aAverage mass units (in daltons) used for calculation of molecular masses based on the proposed composition, as follows: anh-Kdo, 202.048; Hep, 192.063; Hex, 162.053; HexN, 161.069; and P, 79.966.