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. 2021 May 12;12:644855. doi: 10.3389/fmicb.2021.644855

TABLE 4.

The annotated efflux pumps in Francisella species and subspecies.

Francisella tularensis subsp. tularensis Schu S4 Francisella tularensis subsp. holarctica LVS Francisella tularensis subsp. novicida U112
Locus (KEGG orthology, Uniprot) name [E.C. number], other information Locus (KEGG orthology, Uniprot) name [E.C. number], other information Locus (KEGG orthology, Uniprot) name [E.C. number], other information

Outer membrane efflux proteins

TolC (OMP), outer membrane efflux protein, tolC precursor FTT_1724c (K12340) FTL_1865 (K12340) FTN_1703 (K12340, A0Q8J5)

AcrAB system

AcrA, efflux transporter, RND family, MFP subunit. MexH family. (Also annotated as a Co/Zn/Cd efflux system membrane fusion protein in some strains) FTT_0106c (K03585) FTL_1671 (K03585) FTN_1609 (K03585, A0Q8A4), RND family efflux transporter, MFP subunit. MexAB-OprM [MD:M00718]
AcrB (RND) FTT_0105c transporter AcrB/AcrD/AcrF family FTL_1672 (Bina et al., 2008) FTN_1610 (K18138, A0Q8A5) AcrB/AcrD/AcrF family
FtlC FTT_1095c FTL_1107 FTN_0779

Emr MFS-type multidrug efflux pump (EMR locus) (Alqahtani et al., 2018)

SilC FTT_1258 FTL_0686 (Alqahtani et al., 2018) FTN_1277
EmrA1, outer membrane efflux protein, FTT_1257 (K03543) FTL_0687 (K03543) (Alqahtani et al., 2018) FTN_1276 (K03543)
EmrB, membrane fusion protein, multidrug efflux system membrane fusion protein; membrane fusion component of tripartite multidrug resistance system FTT_1256 (K03446) FTL_0688 (K03446) (Alqahtani et al., 2018) FTN_1275 (K03446)

Other efflux systems

Efflux transporter, RND family, MFP subunit. FTT_0747c, hypothetical protein (261 aa), HlyD_D23 domain FTL_1366 (partial, 105 aa) FTN_0718 (Uniprot A0Q5U5), (285 aa), membrane fusion protein
ErmE multidrug resistance antiporter of cations and cationic drugs, small multidrug resistance family proteins FTN_0799
ArsB (arsenite-antimonite efflux family protein) FTT_0853 Not found FTN_0382 (A0Q4X0) FTN_0800
ArsR family transcriptional regulator K03892, arsenate/arsenite/antimonite-responsive transcriptional repressor (Xu et al., 1996) FTT_0868c FTL_0370 FTN_0395 FTN_0801