Fig. 2
The insertion site and genomic patterns of chromosomally-encoded mcr-1. a The insertion patterns mapped to the Escherichia coli str. K-12 substr. MG1655 (Accession: NC_000913.2). The ring colored with orange represents the genome sequence of Escherichia coli str. K-12 substr. MG1655. The number in the outmost represents the order for each pattern, which showed in b, c and Additional file 2: Figure S1. b The genetic structure of chromosomally-encoded mcr-1 patterns which included more than one isolate. c The genetic structure of chromosomally-encoded mcr-1 which located on an integrative element region and a plasmid-like region