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Chromosomal location of the I.11E insertion mutant. (A) The transposon insertion in the cytotoxicity mutant I.11E is located 9 bp upstream of gene PA5099. Histidine utilization genes are indicated by the hatched arrows. (B) The histidine utilization pathway (http://biocyc.org/). The gene product involved in each individual step is in boldface.
