FIG. 2.
Alignment of the NH2-end sequences of FliO from E. coli (GenBank accession no. L22182 and L21994) (FliOEc) S. typhimurium (L49021) (FliOSt), and C. crescentus (U20387) (FliOCc) with the deduced sequence of FliO from R. sphaeroides (FliORs) starting from the TTG codon. The second possible start codon encodes V25. Identical and similar residues present in all the species are shaded. The difference in length between E. coli and S. typhimurium corresponds to the controversy between the actual translation start codon for FliO (for details, see references 14 and 17).