MQKIQFILGILAAASSSATLAYDGKITFNGKVVDQTCSVTTESKNLTVKLPTVSANSLASSGKVVGLTPFTILLEGCNTPAVTGAQNVNAYFEPNANTDYTTGNLTNTASSGASNVQIQLLNADGVKAIKLGQAAAAQSVDTVAINDANVTLRYNAQYYATGVATAGDVTSTVNYTIAYQ F17 fimbrial adhesive antigen Fimbriae (also called pili), polar filaments radiating from the surface of the bacterium to a length of 0.5-1.5 micrometers and numbering 100-300 per cell, enable bacteria to colonize the epithelium of specific host organs. F17a-A F17 pilin 180 F17 fimbrial protein FMF3_ECOLX