Table 2.
List of 8 unique glycopeptides containing 9 glycosylation sites identified by the CID MS and ECD MS
Peptide sequence [residue range] | Glycosylation Sites | Glycan moieties | Theoretic Mw (Da) | Observed Mw (Da) |
---|---|---|---|---|
IIIRSENITNNAK[16-28] | N22 | (GlcNac)2(Man)3(Fuc)1 | 2524.2132 | 2524.2077 |
TIIVQLNE[29-36] | N35 | (GlcNac)2(Man)3 | 1821.8474 | 1821.8445 |
INCTRPNNNTR[40-50] | N41 and N47 | (GlcNac)2(Man)x + (GlcNac)2(Man)9-x | 3766.5055 | 3766.4984 |
KSIHIGPGQAFYATGEIIGDIRQAHCNISR[51-80]+alkylation of C76 | N77 | (GlcNac)2(Man)9 | 5174.3534 | 5174.3134 |
TKWNKTLQQVAKK[81-93] | N84 | (GlcNac)2(Man)7 | 3113.4504 | 3113.4368 |
AceKLREHFNNKTIIFKPSSGGDLE[93-114] | N99 | (GlcNac)2(Man)3(Fuc)1 | 3610.7333 | 3610.7422 |
SNITGLLLTR[190-199] | N191 | (GlcNac)2(Man)3(Fuc)1 | 2126.0221 | 2126.0184 |
DGGNNSNKNKTETFRPGGGDMRDNWR[200-225] | N208 | (GlcNac)2(Man)3(Fuc)1 | 3961.6993 | 3961.6908 |