TABLE 1.

Strains used in this studya

StrainParentColistin susceptibilitypmr genotypeReference
ATCC 17978*NASWild type44
AB0057*NASWild type2, 18
MAC101AB0057RPmrA P102H, PmrB A262PThis study
MAC102AB0057RPmrB A227VThis study
MAC103MAC101SSame as MAC101This study
MAC201ATCC 17978RPmrB T13N, PmrB P233SThis study
MAC203MAC201SPmrB T13N, PmrB P233S, PmrB Δ411-444This study
ACCA152*NARPmrB P233T
AB060*NASPmrB FS209 (frameshift)18
ATCC 27853NASND28
  • a All strains are A. baumannii, except for P. aeruginosa ATCC 27853. *, clinical isolate. NA, not applicable; R, resistant; S, susceptible.