TABLE 1

MICs of mcr-1-positive strains used in the study

StrainPCR for mcr-1MIC (μg/ml)Fold change
E. coli ATCC 259220.12532
E. coli ATCC 25922(pMQ124-mcr-1)+4
E. coli YD6260.12516
E. coli YD626(pMQ124-mcr-1)+2
K. pneumoniae 22102910.12532
K. pneumoniae 2210291(pMQ124-mcr-1)+4
K. pneumoniae ATCC 138830.125256
K. pneumoniae ATCC 13883(pMQ124-mcr-1)+32
A. baumannii ATCC 179780.2564
A. baumannii ATCC 17978(pMQ124XLAB1-mcr-1)+16
A. baumannii SM15361>128
A. baumannii SM1536(pMQ124XLAB1-mcr-1)+>128
A. baumannii D7730.25>128
A. baumannii D773(pMQ124XLAB1-mcr-1)+>128
P. aeruginosa TRPA17924
P. aeruginosa TRPA179(pMQ124-mcr-1)+8
P. aeruginosa 85424550.52
P. aeruginosa 8542455(pMQ124-mcr-1)+1
P. aeruginosa ATCC 470850.54
P. aeruginosa ATCC 47085(pMQ124-mcr-1)+2