Described herein is a peptide, referred to as a GlycoTag peptide, that includes repeats of an N-linked glycosylation sequon that is naturally present in C. jejuni. The GlycoTag peptide can be in a purified and isolated form following expression of a construct encoding the GlycoTag peptide or it is, in whole or in part, a synthetic peptide. The GlycoTag peptide is typically used with glycans attached thereto. The GlycoTag peptide can be used alone or in combination with different proteins or peptides and can be incorporated into a chimeric protein or peptide for use in the development of antigen/antibody delivery systems, the preparation of vaccines, pharmaceuticals and diagnostic tests, and research into therapies for countering Campylobacter and other infections.