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. Author manuscript; available in PMC: 2024 Mar 1.
Published in final edited form as: Proteins. 2022 Oct 6;91(3):315–329. doi: 10.1002/prot.26430

TABLE 1.

Most common chemotaxis system category combinations in Representative Proteomesa

Br. 2Ab Br. 2C Branch 2B Branch 1 Branch 3 Category Combination % of Proteomes RP Cluster in Figure 3
F1 F2 F5 F6 F4 F9 F10 F7.zc F7 F8 ACF Tfp MAC1 MAC2 Uncat Count
Single systems:
+ 304 F1 16.9 6
+ 87 F5 4.8 12 right
+ 18 F6 1.0 10 middle
+ 74 F7 4.1 8 right
+ 29 ACF 1.6 15
+ 17 Tfp 1.0 9 left
+ 106 MAC1 5.9 18 left
+ 46 MAC2 2.6 14 right
+ 9 Uncat 0.5 3 right
Combinations within the same Branch:
+ + 9 F1 + F2 0.5 6 left
+ + + 44 F7.z + F7 + F8 2.5 7 middle
+ + 32 F7 + F7.z 1.8 7 left
+ + 14 F7 + F8 0.8 8 left
+ + 46 MAC1 + MAC2 2.6 17 left
Combinations between Branches:
+ + 95 F1 + F7 5.3 4 right
+ + 28 F1 + F5 1.6 5 left
+ + 12 F1 + F6 0.7 10 left
+ + 19 F1 + F9 1.1 1
+ + 16 F1 + MAC1 0.9 18 right
+ + + 14 F1 + MAC1 0.8 17 right
+ MAC2
+ + 56 F1 + MAC2 3.1 14 left
+ + 17 F1 + Uncat 1.0 3 left
+ + 19 F5 + F7 1.1 12 middle
+ + 20 F5 + MAC1 1.1 12 left
+ + 11 F6 + F7 0.6 10 right
+ + + 9 F6 + F7 + Tfp 0.5 9 right
+ + 28 ACF + MAC1 1.6 16
+ + + + 14 F7.z + F7 + F8 0.8 7 right
+ MAC1
+ + + + 9 F7.z + F7 + F8 0.5 7 middle
+ ACF
+ + 24 F7 + MAC1 1.3 8 middle
+ + + 16 F7 + F8 + MAC1 0.9 8 left
a

From Dataset S2, which includes 1797 proteomes. The 90% of combinations that each represent < 0.5% of the total dataset are not shown in this table.

b

The phylogenetic tree in Figure 7 of Wuichet & Zhulin32 that forms the basis for classification of chemotaxis system categories has three main branches, arbitrarily numbered here. Branch 2 has three main sub-branches.

c

The subset of F7 systems that contain CheZ. See Figure 2.