Table 2 Distribution of leaderless genes in sequenced prokaryotic genomes

Archaea

Crenarchaeota

21 (/24)

49.5 (6.1, 66.7)

Euryarchaeota

36 (/46)

31.7 (3.8, 63.3)

Nanoarchaeota

1 (/1)

71.8 (71.8, 71.8)

Other Archaea

1 (/1)

41.2 (41.2,41.2)

Bacteria

Acidobacteria

3 (/3)

13.3 (9.7, 19.4)

Actinobacteria

86 (/89)

19.2 (2.3, 29.8)

Aquificae

2 (/5)

26.5 (20.7, 32.4)

Bacteroidetes/Chlorobi

1 (/37)

2.4 (2.4, 2.4)

Chloroflexi

4 (/12)

4.7 (4.0, 5.7)

Deinococcus-Thermus

5 (/5)

39.4 (35.9, 46.1)

Firmicutes

56 (/209)

4.2 (2.4, 16.6)

α-Proteobacteria

2 (/117)

6.3 (4.7, 7.8)

β-Proteobacteria

9 (/71)

6.8 (2.8, 10.6)

γ-Proteobacteria

15 (/239)

4.5 (3.0, 5.7)

δ-Proteobacteria

8 (/33)

15.8 (5.7, 20.6)

ε-Proteobacteria

2 (/26)

2.9 (2.7, 3.2)

Spirochaetes

6 (/18)

3.9 (1.8, 6.9)

Other Bacteria

8 (/20)

7.8 (1.4, 16.1)