<P> B. pseudomallei is intrinsically resistant to a large number of antimicrobial agents by virtue of its efflux pump mechanism . This mediates resistance to aminoglycosides (AmrAB - OprA), tetracyclines, fluoroquinolones, and macrolides (BpeAB - OprB). </P> <P> No vaccine is currently available, but a number of vaccine candidates have been suggested . Aspartate - β - semialdehyde dehydrogenase (asd) gene deletion mutants are auxotrophic for diaminopimelate (DAP) in rich media and auxotrophic for DAP, lysine, methionine, and threonine in minimal media . The Δasd bacterium (bacterium with the asd gene removed) protects against inhalational melioidosis in mice . </P>

Which of the following is not a characteristic of burkholderia pseudomallei