The pili are polar flexible filaments of about 5.4 nanometers diameter and 2.5 micrometers average length; they consist of only a single polypeptide chain arranged in a helical configuration of five subunits per turn in the assembled pilus. O-glycosylated; glycan consists of 5NbetaOHC47NFmPse(alpha2-4)Xyl(beta1-3)FucNAc in beta1-O linkage to Ser. Belongs to the N-Me-Phe pilin family.