The partition region qsopAB of the Coxiella burnetii plasmid QpH1 was analy
zed. Locus qsopA alone appears to fulfill the partitioning Function; QsopA
represses its own promoter 17-fold. Two partition-associated incompatibilit
y sites mere identified: incA in a 200-bp region covering the qsopA promote
r and incB in the qsopB locus.