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. 2003 Nov;185(22):6556–6561. doi: 10.1128/JB.185.22.6556-6561.2003

FIG. 2.

FIG. 2.

Arrangement of XAR genes in E. coli. Positions of genes are indicated according to the work of Blattner et al. (2). The glutamate XAR system contains additional genes located elsewhere in the chromosome (21, 31).