. Author manuscript; available in PMC: 2010 Apr 1.

Published in final edited form as: Glycobiology. 2006 Nov 9;17(2):220–230. doi: 10.1093/glycob/cwl068

Table 3. Glycopeptides of Cit s 1.

Listed are the ions detected after combined trypsin/chymotrypsin treatment and their assignment to forms of the overlapping peptides NNTLIAK (CT13) and VTSDQLNNTL (CT14) modified with various N-glycan structures.

Glycan structure	[M+H]⁺ calc.	Pre-dominant Ion	m/z theor.	m/z found	Ret. time [min]
CT13 + MMXF	1943.8690	[M+2H]²⁺	972.4381	972.4393	27.16
CT14 + MMXF	2274.9704	[M+2H]²⁺	1137.9889	1137.9729	28.41
CT14 + MMX	2128.9125	[M+2H]²⁺	1064.9599	1064.9653	28.48
CT14 + MMF	2142.9282	[M+2H]²⁺	1071.9677	1071.9607	28.41
CT14 + GnMXF / MGnXF	2478.0500	[M+2H]²⁺	1239.5287	1239.5316	28.27