Table 1 Summary of the findings and data sets searched in this study
Data set | Size (nt) | Sequences | Median seq. Length | Number of qnr fragmentsa | Assembled qnr sequences >200 aab | |
|---|---|---|---|---|---|---|
Metagenomic | Previously known | Putatively novel | ||||
Human microbiomes [43] | 3.69 × 1012 | 3.90 × 1010 | 93 | 83,485 (2.14 × 10−6) | 1 | 0 |
Human intestinal tract [34] | 3.71 × 1011 | 5.22 × 109 | 75 | 12,966 (2.49 × 10−6) | 0 | 0 |
Human intestinal tract [53] | 7.10 × 1010 | 4.41 × 108 | 148 | 264 (5.99 × 10−7) | 1 | 0 |
Waste water treatment plant [54] | 4.82 × 1011 | 5.18 × 109 | 101 | 19,458 (3.76 × 10−6) | 4 | 2 |
Antibiotic-polluted Indian lake [55] | 6.75 × 109 | 6.68 × 107 | 101 | 57,415 (8.59 × 10−4) | 5 | 0 |
Antibiotic-polluted Indian soil [35] | 4.73 × 1010 | 4.68 × 108 | 101 | 840 (1.80 × 10−6) | 0 | 0 |
Antibiotic-polluted Indian river sediment [56] | 3.89 × 1010 | 3.85 × 108 | 101 | 67,021 (1.74 × 10−4) | 4 | 1 |
Indian well water [35] | 7.32 × 1010 | 7.25 × 108 | 101 | 1704 (2.35 × 10−6) | 3 | 0 |
Oil spill [57] | 2.75 × 1011 | 2.72 × 109 | 101 | 12,533 (4.60 × 10−6) | 0 | 3 |
Pune river sediments [58] | 3.9 × 1011 | 3.11 × 109 | 126 | 4805 (1.55 × 10−6) | 5 | 4 |
Wadden sea [59] | 8.4 × 109 | 5.23 × 107 | 161 | 723 (1.38 × 10−5) | 0 | 5 |
Tara oceans [60] | 7.20 × 1012 | 7.25 × 1010 | 101 | 100,795 (1.39 × 10−6) | 2 | 5 |
Other | ||||||
 NCBI nt | 5.22 × 1010 | 2.07 × 107 | 740 | 709 (3.42 × 10−5) | 466 | 42 |
 NCBI RefSeq bacterial | 9.63 × 109 | 5.24 × 103 | 1,176,248 | 54 (1.03 × 10−2) | 49 | 2 |
 NCBI env_nt | 9.55 × 109 | 2.07 × 107 | 117 | 71 (3.43 × 10−6) | 3 | 4 |
 Totals: | 1.27 × 1013 | 1.30 × 1011 | N/A | 362,843 (2.79 × 10−6) | 611 | 72 |