Invert repeat sequences flanking the lps gene cluster in the BXO1 strain of Xoo. The horizontal arrows represent the ORFs of metB and etfA. I, II, III represent three different invert repeats in the 3' regions of metB and etfA genes. The vertical arrows represent the breakpoints of homology between BXO1 and BXO8. The distances of the break points from the stop codons of the metB and etfA genes are indicated. Dashed lines indicate the remainder of the metB and etfA genes. The sequence of the corresponding inverse repeats in Xac, Xcc and Xoor are also indicated along with the derived consensus sequence for the repeats. The numbers in brackets indicate distances in bp between individual repeats.