Table 2

Distribution of five serine protease families across various prokaryotic taxonomic groups represented in 91 genomes.

Lineage
Trypsin
Subtilisin
Beta-lactamase
Clp protease
Lon protease

Euryarchaeota (11)
2
22
3
2
18

Crenarchaeota (5)
5
15
2
3
-

Alphaproteobacteria (6)
32
10
43
10
6

Betaproteobacteria (10)
24
24
13
11
12

Gammaproteobacteria (13)
37
38
48
25
31

Firmicutes (18)
42
49
75
31
24

Actinobacteria (8)
51
33
46
19
9

Chlorobi (3)
8
8
7
4
2

Cyanobacteria (3)
13
6
10
9
-

Deltaproteobacteria (2)
26
18
4
2
8

Others (12)
7
4
3
15
7

Total
247
227
254
121
117

Tripathi and Sowdhamini BMC Genomics 2008 9:549   doi:10.1186/1471-2164-9-549