Interestingly, the presence of GlnA3 (Rv1878) and some homologues involved in polyamine uptake (Rv1877) and utilization steps GabT (GABA transaminase, Rv2555) were reported in a guinea pig model of tuberculosis, where the bacterial proteome during early and chronic stages of this disease in vivo was investigated [287]. The gene discussed is ABAT; the disease is tuberculosis.