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. 2006 Sep 8;188(22):7914–7921. doi: 10.1128/JB.00802-06

FIG. 3.

FIG. 3.

(A) (+)Nano-ESI-QTOF MS/MS spectrum of the doubly charged ions at m/z = 1,024.68, representing glycopeptide TFDEEVTTGSNITVVQ with one galactose and one rhamnose attached to the peptide backbone. (B) (+)Nano-ESI-QTOF MS/MS spectrum of the doubly charged ions at m/z = 872.53 originating from glycopeptide TFDEEVTTGSNITVVQ after β-elimination. The glycosylation site is displayed by the y9 ion and the b8 ion and a loss of water from the threonine-590 in the sequence of SgsE. #, sodiated ions.