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. Author manuscript; available in PMC: 2015 Apr 8.
Published in final edited form as: Anal Chem. 2007 Mar 23;79(9):3271–3279. doi: 10.1021/ac0617363

Figure 1.

Figure 1

(+)NanoESI/FTICR MS of the S-layer glycopeptide ATLTSAVDIRVD with a single glycosylation site at Ser794. Sample concentration, 7 pmol μL−1 in water/methanol/formic acid (49/49/2, v/v/v %); capillary exit voltage, 54.4 V. Beside highly abundant CSD fragment ions only quadruply charged glycopeptide species of low abundance with 15 repeat units are detected.