Figure 1.

Alignment of STE secretion/translocation signals. Residues in bold are high consensus; at least five of seven STE contain these residues. Residues in gray are low consensus; three or four of seven STE contain these residues. Residues that are not shaded have two or fewer of seven STE containing the residue. Alignments were performed with the blosum62 method (28). Residues that have similar properties are grouped as following: !, any one of IV; $, any one of LM; %, any one of FY; and #, any one of NDQE. The consensus sequence is shown under the STE alignment. The percent identity to SspH2 varies between proteins. SspH2₁₄₂ is 89% identical to SseI₁₄₂. SseJ₁₁₁ is 38% identical to SspH2₁₀₉. SifB₁₁₅ is 28% identical to SspH2₁₁₂. SifA₁₁₃ is 32% identical to SspH2₁₁₁. SspH2₁₄₂ is 45% identical to SspH1₁₃₉. SspH2₁₂₈ is 37% identical to SlrP₁₂₅.