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. 2019 Apr 9;10:729. doi: 10.3389/fmicb.2019.00729

Table 2.

Summary of MICs, amino acid substitutions, deletion mutations in the ramRA intergenic region and gene expression fold changes for the ramA, acrB and ompF.

MIC(ug/mL) Amino acid substitutions Deletion mutations Gene expression fold change




Ciprofloxacin GyrA ParC RamRA ramA acrB ompF
A5-S 0.015 1 1 1
A5-R 16 S83Y; D87G S80R 1.3 2.7 −2.9
A-5-HR 2048 S83Y; D87G S80I 41 nt + 1 mutation 80 6.6 −7.7
A-7-S 0.06 1 1 1
A-7-R 16 S83Y 11 3.6 −25
A-7-HR 2048 S83Y; D87G G78D 9 nt 83.3 10.2 −3.8
A-21-S 0.03 1 1 1
A-21-R 8 S83Y 11 nt 72.2 8.3 −6.7
A-21-HR 2048 S83F; D87G 12 nt +1 mutation 205.8 14.5 −16.7
A-33-S <0.0009 1 1 1
A-33-R 16 S83F 35.8 5.6 −100
A-33-HR 2048 S83F; D87G 4 nt 22.6 7.4 −43.3