Abstract
Previous results from our laboratory have shown that the genes copA e copB from Xanthomonas axonopodis pv. citri (Xac) encode proteins involved in the copper resistance mechanism. Both genes are organized in an operon, whose transcription was specifically induced by copper. Analysis of the region upstream to the operon revealed the presence of the ORF XAC3629 (113bp of intergenic region),…