The invention relates to flagellar glycosylation processes of helicobacter having a polar flagellum or polar flagella, polar flagellar motilitypolypeptides, nucleic acid molecules encoding the polypeptides. The invention also relates to uses of flagellar glycosylation process changes which may be the result of mutational changes which can be tracked in associated polypeptides and nucleic acid molecules in detecting and treating disease as well as screening candidate pharmaceutical compounds.
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