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. 2019 Sep 11;8(9):1444. doi: 10.3390/jcm8091444

Table 2.

Amino acid substitutions in PmrA, PmrB, PhoP, and PhoQ in three colistin-heteroresistant K. pneumoniae isolates and their resistant subpopulations.

Isolatea Amino Acid Substitutions in:
PmrA PmrB PhoP PhoQ
178 203 43 150 163 185 186 198 199 216 152 154 359 414 421 423 429 430
S1703-35 P Iso Arg Glu Asp Arg Arg Lys Arg Lys Gln Asp Lys Arg Leu Asp Ala Val Phe
RP1 Lys Asn Leu Glu His Asn Lys Arg Pro Ala Val
RP2 Lys Asn Glu Asn Lys Pro Ala Val
S1703-109 P Ile Gly Arg Asp Cys Thr Gly Gly Cys Gly Asp Ser Lys Leu Gly Pro Ala Val
RP1 Phe Glu
RP2 Glu Asn
S1703-112 P Ile Arg Pro Leu Glu Arg Lys Arg Asp Gln Lys Leu Gly Pro Ala Val
RP1 Lys Arg Arg Gln Lys Arg
RP2 Lys Arg Arg Gln Lys Arg Arg

a P, parental; RP, resistant population. b Amino acid alterations that are supposed to be associated with colistin resistance are indicated as white letters with a grey background.