FIG 1.

Schematic representation of the gadB (dark-gray arrow) and gadC (light-gray arrow) loci in the Brucella species and strains for which genome sequences (complete or partial) are available. The arrow length is proportional to the gene length, whereas the distance between the two genes is arbitrary, though always referring to two adjacent loci. The corresponding locus tags are shown above each arrow. Dashed interrupted arrows indicate the occurrence of frameshift mutations or stop codons. Squared arrows mark genes shorter than the canonical length for GadB (464 aa) and GadC (510 to 513 aa).