Table 1.

Monoisotopic masses, compositions and putative structures of GP5-linked N-glycans.

Peak	Observed m/z	Theory m/z	Mass	Charge	Composition							Proposed structure
					Hex	HexNAc	Fuc	Xyl	NeuAc	NeuGc	Kdn
1	753.36	753.36	2191.12	3	4	4	2	0	0	0	0
		753.38	1482.75	2	3	2	1	1	0	0	0
		752.82	1459.66	2	3	3	0	0	0	0	0
		752.37	2210.12	3	7	3	0	0	0	0	0
2	825.82	825.73	2408.22	3	5	4	0	0	1	0	0
		825.73	2408.22	3	4	4	1	0	0	1	0
		826.73	2411.22	3	6	4	1	1	0	0	0
		826.75	2455.24	3	7	4	0	0	0	0	0
		826.77	2477.27	3	3	6	2	0	0	0	0
3	955.73	955.83	2864.47	3	3	9	0	0	0	0	0
		955.46	2797.42	3	4	5	2	0	1	0	0
		955.45	1908.88	2	4	4	0	0	0	0	0
		956.12	2799.40	3	5	4	0	0	1	1	0
		956.14	2799.44	3	5	5	1	0	0	1	0
		956.49	2844.45	3	6	5	2	0	0	0	0
4	999.27	999.50	2973.49	3	5	4	1	0	1	1	0
		999.50	2973.49	3	6	4	0	0	2	0	0
		999.82	2930.49	3	5	4	3	0	1	0	0
		1000.00	1976.01	2	5	3	1	0	0	0	0
		998.50	1973.01	2	3	4	1	1	0	0	0
		998.49	2926.50	2	4	7	2	0	0	0	0
5	1080.82	1081.21	3218.61	3	6	5	0	0	2	0	0
		1081.54	2139.08	2	7	2	1	0	0	0	0
		1081.56	2161.11	2	3	4	3	0	0	0	0
		1079.87	3214.61	3	6	5	4	0	0	0	0
6	1129.27	1129.23	3362.69	3	5	5	2	0	2	0	0
		1129.91	3364.71	3	7	7	1	0	0	0	0
7	1238.27	1238.28	3667.84	3	7	6	0	0	2	0	0
		1238.09	2474.16	2	5	4	0	0	1	0	0
		1238.63	3712.85	3	7	4	0	0	3	0	0
		1238.64	3712.88	3	7	7	3	0	0	0	0
		1238.96	3669.89	3	6	5	1	0	0	3	0
		1237.62	3687.86	3	9	6	1	1	0	0	0
		1237.61	3665.83	3	5	4	1	0	4	0	0
8	1156.82	1156.93	3467.76	3	7	6	3	0	0	0	0
9	1266.18	1265.98	3794.90	3	5	6	1	0	3	0	0
		1265.97	3772.91	3	9	7	1	0	0	0	0
		1265.64	2507.29	2	4	6	1	0	0	0	0
		1266.95	3731.89	3	10	6	1	0	0	0	0
		1266.96	3753.88	3	6	5	1	0	3	0	0
10	1306.91	1307.17	2612.31	2	6	4	0	0	1	0	0
		1307.17	2612.31	2	5	4	1	0	0	1	0
		1307.64	3875.93	3	6	6	1	0	0	0	3
		1307.65	2569.31	2	5	4	3	0	0	0	0
		1306.18	2610.34	2	4	5	3	0	0	0	0
11	1346.45	1347.11	2648.25	2	5	4	1	0	1	0	0
		1347.18	2670.36	2	6	5	1	0	0	0	0
		1345.67	1322.68	1	3	2	1	0	0	0	0
		1345.65	2689.28	2	4	5	1	0	1	0	0
12	1615.82	1614.81	1590.81	2	6	5	2	0	1	0	0