| Strain | Pseudomonas fluorescens Pf0-1 |
| GI | 77460000 |
| Locus Tag | Pfl01_3778 |
| Description | cytosine permease |
| Strain | Pseudomonas putida BIRD-1 |
| GI | 386012104 |
| Locus Tag | PPUBIRD1_2551 |
| Description | CodB |
| Strain | Pseudomonas aeruginosa UCBPP-PA14 |
| GI | 116054169 |
| Locus Tag | PA14_05700 |
| Description | cytosine permease |