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Table 2 Distribution of type A integrons and the 73,655 bacterial genomes in different phyla, classes, families, and genera. The integron copy number was normalized against the species level

From: Conserved phylogenetic distribution and limited antibiotic resistance of class 1 integrons revealed by assessing the bacterial genome and plasmid collection

Phylum/class/family/genus

No. of species

No. of species carrying type A integrons

Pre%Aa

Pre%Totalb

Bacteria

4310

52

57.7%

8.6%

Proteobacteria

1831

50

58.0%

9.8%

Gammaproteobacteria

832

48

60.4%

14.2%

Enterobacteriaceae

102

24

54.2%

25.5%

  Klebsiella

9

7

57.1%

44.4%

  Enterobacter

10

4

75.0%

40.0%

  Escherichia

6

4

50.0%

33.3%

  Other genera in Enterobacteriaceae

77

9

44.4%

33.7%

Pseudomonadaceae

49

7

71.4%

14.3%

Pseudomonas

44

7

71.4%

15.9%

  Moraxellaceae

44

3

100.0%

22.7%

Acinetobacter

31

3

100.0%

25.8%

  Other families in Gammaproteobacteria

637

14

57.4%

18.5%

  Betaproteobacteria

318

2

0.0%

10.4%

Actinobacteria

441

1

100.0%

10.9%

Chrysiogenetes

3

1

0.0%

0.0%

  1. aThe prevalence of host species carrying type A integrons = no. of pathogenic species carrying type A integrons/total no. of species carrying type A integrons
  2. bThe prevalence of all species = no. of pathogenic species/total no. of species