- aP plasmid, C chromosome
- bA: ISApl1-mcr1-PAP2-ISApl1; B: ISApl1-mcr1-PAP2; C: mcr1-PAP2
- c–: not determined
- dData of shaded isolates was reported in Yamaguchi et al. [8]
- eDark shaded isolates possessed mcr-1 marked with the single nucleotide mutation