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Table 3 ARGs and ARG families found in five or more of the communities

From: A reservoir of ‘historical’ antibiotic resistance genes in remote pristine Antarctic soils

ARG description No. of sites with ARG
 Resistance-nodulation-cell division transporter system. Multidrug resistance efflux pump. Macrolide-specific efflux system 9
 MacB is an ATP-binding cassette (ABC) transporter that exports macrolides with 14- or 15-membered lactones 8
 dfrE is a chromosome-encoded dihydrofolate reductase found in Enterococcus faecalis 8
 Efflux pump/potassium antiporter system. RosA: major facilitator superfamily transporter 7
 Alanyl-tRNA synthetase conferring resistance to novobiocin in Escherichia coli 7
 The enzymatic inactivation of rifampin by phosphorylation at the 21-OH position 6
 Undecaprenyl pyrophosphate phosphatase, which consists in the sequestration of Undecaprenyl pyrophosphate 5
ARG family description Number of sampled sites
 Undecaprenyl pyrophosphate phosphatase, which consists in the sequestration of Undecaprenyl pyrophosphate 12
 ABC efflux/transporter system 12
 Efflux pump/potassium antiporter system. RosA: major facilitator superfamily transporter 9
 dfrE is a chromosome-encoded dihydrofolate reductase found in Enterococcus faecalis 8
 Aminocoumarin resistant alaS. Alanyl-tRNA synthetase conferring resistance to novobiocin in Escherichia coli 7
 Resistance-nodulation-cell division transporter system. Multidrug resistance efflux pump 6
 The enzymatic inactivation of rifampin by phosphorylation at the 21-OH position 6
 Aminoglycoside acetyltransferase/nucleotidylyltransferase, which modifies aminoglycosides by acetylation/adenylylation 6
 Major facilitator superfamily transporter, tetracycline efflux pump 5