Schematic representation of the differences between the type I and type II Hib capsular gene clusters. The top part of the figure shows the genetic organization of the capsular gene cluster of Hib. The figure displays a single copy of the gene cluster with the fused truncated insertion element IS1016 and the incomplete bexA gene on the left hand side. The complete bexA gene and part of the bexB gene, present in the second copy of the gene cluster are depicted at the right hand side. The region containing the bcs4, hcsA and hcsB genes are displayed as a blow up. The vertical lines indicate nucleotide substitutions, closed circles denote amino acid substitutions and Δ indicate deletions.
Schouls et al. BMC Microbiology 2008 8:35 doi:10.1186/1471-2180-8-35