FIG. 1.
Schematic representation of the tprF, tprG, tprI, and tprJ loci in the Nichols and Sea 81-4 strains. Similar patterns indicate sequence identity. The Sea 81-4 strain tprG-like ORF central region is identical to the Sea 81-4 and Nichols tprG central regions. The Sea 81-4 TprG is shorter than its homolog in Nichols due to a premature stop generating a longer tprG-tprF spacer. tprI and tprF loci are virtually identical in both isolates. A few base pair changes are described in the text.