Genome comparison detail of selected regions within tetQ2435 using the Artemis Comparison Tool. Red/yellow colouration between sequences indicates sequence identity, no colour indicates divergent sequence, dark blue inverted sequence. Left, tetQ2435 recombination region, arrows. Upper panel: (a), Divergent microcapsule PSF biosynthesis associated locus; (b), Conserved PSF regulatory genes and invertible promoter; (c), Type I restriction and modification genes absent in B. fragilis 638R Lower panel: (d), Intergenic shufflon with invertible DNA regions encoding protein pairs of outer membrane associated proteins.