the 102-kilobase unstable region of yersinia pestis comprises a high-pathogenicity island linked to a pigmentation segment which undergoes internal rearrangement. | several pathogenicity islands have recently been identified in different bacterial species, including a high-pathogenicity island (hpi) in yersinia enterocolitica 1b. in y. pestis, a 102-kb chromosomal fragment (pgm locus) that carries genes involved in iron acquisition and colony pigmentation can be deleted en bloc. in this study, characterization and mapping of the 102-kb region of y. pestis 6/69 were performed to determine if this unstable region is a pathogenicity island. we found that the 1 ... | 1998 | 9573181 |