Table 1 Prokaryotes/Phage groups classified by phage host ranges and the percentage of ORFans within each group

Bacteria_Proteobacteria_Gammaproteobacteria_Enterobacteriales

24

62

2.58

33.0%

Bacteria_Firmicutes_Bacilli_Bacillales

27

48

1.78

26.1%

Bacteria_Firmicutes_Bacilli_Lactobacillales

20

44

2.20

31.9%

Bacteria_Actinobacteria_Actinobacteria_Actinobacteridae

19

20

1.05

56.6%

Bacteria_Proteobacteria_Gammaproteobacteria_Vibrionales

6

18

3.00

77.6%

Bacteria_Proteobacteria_Gammaproteobacteria_Pseudomonadales

9

18

2.00

88.7%

Bacteria_Proteobacteria_Betaproteobacteria_Burkholderiales

9

15

1.67

41.7%

Archaea_Crenarchaeota_Thermoprotei_Sulfolobales

3

10

3.33

53.2%

Bacteria_Firmicutes_Mollicutes

14

9

0.64

64.8%

Bacteria_Cyanobacteria

13

5

0.38

57.0%

Bacteria_Chlamydiae

10

5

0.50

6.8%

Others

123

26

0.21

All Gamma

63

109

1.73

40.2%

All Firmicutes

66

102

1.55

27.1%

All non-Firm-Gamma

148

69

0.47

53.7%