FIGURE 7.
Secondary structure and subdomain prediction of T. thermophilus PilQ. The PredictProtein server was used to predict potentially α-helical (black boxes) and β-sheet (white boxes) regions within PilQ (A). The putative signal peptide processing site is indicated by an arrow, and the determined truncation site of the PilQΔ136 complex is displayed. Rounded boxes indicate putative N0, N1, N2, N3, N4, and N5 subdomains and the secretin domain. Subdomains are indicated in the PilQ complex structure (B). aa, amino acid(s).