Fig. 4.—

Comparison between CRt and C. burnetii of genomic regions putatively involved in O-antigen biosynthesis in C. burnetii. Blue arrows depict protein-coding genes and green arrows represent pseudogenes. Similarity between genes is shown by the grey lines, where a darker shade indicates higher similar. (A) Genomic region associated with deletion in C. burnetii Phase II isolates (Hoover et al. 2002). (B) Genomic region putatively involved in expression of sugars found in the O-antigen backbone (Seshadri et al. 2003). The genes unique to CRt are similar to Holospora obtusa, both in sequence and gene order.