Updated publication reference for PubMed record(s): 32561711, 26966177. Mass spectrometric analysis of cesium chloride purified flagellins and pilins confirmed previously identified N-glycopeptides for FlgA1, revealed additional N-glycopeptides for FlgA1 and FlgA2 and characterized N-glycosylation of PilA1 and PilA2. Analyses were performed using different MS methods (with and withoout applying IS-CID) for samples from wildtype as well as aglB knockout strains.