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. 2014 Feb 19;9(2):e89120. doi: 10.1371/journal.pone.0089120

Table 1. Genes associated with antimicrobial resistance.

Gene Gene product/explanation All isolates MSSA only MRSA only
mecA Alternate penicillin binding protein 2, defining MRSA 45 (15.31%) 0 45 (100%)
SCCmec I Cassette chromosome elements SCCmec 0 0 0
SCCmec II 0 0 0
SCCmec III 25 (8.5%) 0 25 (55.56%)
SCCmec III+ccrA/B-4 2 (0.68%) 0 2 (4.44%)
SCCmec IV 15 (5.10%) 0 15 (33.33%)
SCCmec IV (trunc.) 2 (0.68%) 0 2 (4.44%)
SCCmec V 1 (0.34%) 0 1 (2.22%)
merA/B Mercury resistance operon 31 (10.54%) 4 (1.61%) 27 (60%)
blaZ/I/R Beta-lactamase operon 254 (86.39%) 211 (84.74%) 43 (95.56%)
erm (A) Methyltransferases, erythromycin/clindamycin resistance 29 (9.86%) 2 (0.80%) 27 (60%)
erm (B) 0 0 0
erm (C) 0 0 0
lnu (A) Lincosamid-nucleotidyltransferase 1 (0.34%) 1 (0.4%) 0
mef (A) Macrolide efflux protein A 0 0 0
mph (C) Probable lysylphosphatidylglycerol synthetase 21 (7.14%) 4 (1.61%) 17 (37.78%)
msr (A) Energy dependent efflux of erythromycin 24 (8.16%) 7 (2.81%) 17 (37.78%)
aacA-aphD Bifunctional enzyme Aac/Aph, gentamicin resistance 28 (9.52%) 0 28 (62.22%)
aadD Aminoglycoside adenyltransferase, tobramycin resistance 12 (4.08%) 7 (2.81%) 5 (11.11%)
aphA3 Aminoglycoside phosphotransferase, neo-/kanamycin resist. 45 (15.31%) 2 (0.80%) 43 (95.56%)
fusB Fusidic acid resistance gene ( = far1) 1 (0.34%) 1 (0.4%) 0
fusC Fusidic acid resistance gene from “SCCfus” elements 2 (0.68%) 2 (0.8%) 0
mupA Mupirocin resistance protein 17 (5.78%) 9 (3.61%) 8 (17.78%)
tet (K) Tetracycline resistance 29 (9.86%) 6 (2.41%) 23 (51.11%)
tet (M) Tetracycline resistance 30 (10.20%) 3 (1.20%) 27 (60%)
cat Chloramphenicol acetyltransferase 2 (0.68%) 1 (0.40%) 1 (2.22%)
fexA Chloramphenicol/florfenicol exporter 0 0 0
cfr Linezolid resistance 0 0 0
dfrS1 Dihydrofolate reductase type 1 1 (0.34%) 1 (0.4%) 0
qacA Quaternary ammonium compound resistance protein A 22 (7.48%) 3 (1.2%) 19 (42.22%)
qacC Quaternary ammonium compound resistance protein C 9 (3.06%) 6 (2.41%) 3 (6.67%)
sat Streptothricine-acetyltransferase 45 (15.31%) 2 (0.80%) 43 (95.56%)
vanA Vancomycin resistance gene 0 0 0