TABLE 1.
Functionally characterized chemoreceptors of E. coli, S. Typhimurium, and B. subtilis
| Locus tag (chemoreceptor name) | LBD type | Effector(s) | Binding mode(s) | Reference(s) |
|---|---|---|---|---|
| E. coli | ||||
| b4355 (Tsr) | 4HB | Serine | Direct | 50, 61 |
| AI-2 | Indirect | 50 | ||
| Redox substrates, aerotaxis | Unknown | 19, 62 | ||
| 3,4-Dihydroxymandelic acid | Direct | 51 | ||
| b1886 (Tar) | 4HB | Aspartate | Direct | 61, 63 |
| Maltose | Indirect | 57, 64 | ||
| Metal ions | Unknown | 65 | ||
| b1421 (Trg) | 4HB | Ribose, galactose | Indirect | 66 |
| b1885 (Tap) | 4HB | Dipeptides | Indirect | 54 |
| Pyrimidines | Unknown | 52 | ||
| b3072 (Aer) | PAS | Aerotaxis, energy | Unknown | 18, 19, 62 |
| S. Typhimurium | ||||
| STM1919 (Tar) | 4HB | Cysteine, aspartate | Direct | 70, 208 |
| STM4533 (Tsr) | 4HB | Cysteine | Unknown | 70 |
| STM3577 (Tcp) | 4HB | Citrate | Direct | 209 |
| Phenol | Unknown | |||
| STM3152 (McpB) | 4HB | Cystine | Unknown | 70 |
| STM3216 (McpC) | 4HB | Cystine | Unknown | 70 |
| B. subtilis | ||||
| BSU10380 (HemAT) | Protoglobin | Aerotaxis | Unknown | 17 |
| BSU13950 (McpC) | dCache | 12 amino acids | Direct | 88, 89 |
| PTS substrates | Indirect | 194, 195 | ||
| BSU31240 (McpA) | dCache | Glucose, α-methylglucoside | Unknown | 9 |
| BSU31260 (McpB) | dCache | 4 amino acids | Direct | 9 |