FIG. 2.

Graphical demonstration of the blp locus in a type 6A strain and comparison with the corresponding portion of the TIGR4 genome. Solid arrows represent coding sequences for double glycine-containing proteins, vertically striped arrows represent genes of unknown function, checked arrows represent transport genes, the white box represents an insertion sequence element, and gray boxes represent the conserved putative BlpR binding sites designating the start sites of operons. The gap in 6A designates an unsequenced region.