FIG. 1.

Comparison of the P. aeruginosa 683 PilA primary structure with pilin group I, II, and III representatives. Sequence identity is indicated by gray highlighting. The alignment of the three representative pilin groups is based on the common sequence of the N-proximal region and the disulfide loop region. Cysteines forming the disulfide loop are in white with a black background. Identity between PA14 and 683 pilin residues is indicated by a colon. The GenBank accession numbers for strains 1244, PA103, and PA14 are CAA58768.1, P08015.1, and ABJ13792.1, respectively.