FIG. 2.
Sequence comparison of fimU from S. enteritidis 3b (S.e.) with fimU of S. typhimurium (S.t.) and argU of E. coli (E.c.) as well as the predicted fimU RNA secondary structure. (A) Alignment of S. enteritidis fimU DNA sequence with both the S. typhimurium fimU (39) and E. coli (31) argU gene sequences. Symbols: •, DNA sequence identity; −, gaps introduced to maximize homology; ∗, bases constituting the −35 and −10 boxes; ⇓, bases constituting the anticodon; ▿, position of the Tn10 insertion on the S. enteritidis 3b-122 chromosome. The DNA sequence corresponding to the proposed mature tRNAArg (UCU) is underlined. (B) Diagram of the proposed secondary structure for tRNAArg (UCU) from S. enteritidis 3b. The anticodon bases are underlined.