FIG. 9.

Genome structure of the C2 gene-flanking regions of type C and D strains. The DNA sequences of the upstream and downstream regions including the C2 genes of C-ST, C-468, and D-1873 were determined and compared with the analogous regions of (C)-203U28. The horizontal arrows represent the ORFs in the genome of each strain, and the ORFs are connected by gray shading. The levels of sequence identity (expressed as percentages) between homologous regions and deletions of c2p053 and c2p054 in C-ST and C-468 are indicated.