| Strain | Pseudomonas fluorescens Pf0-1 |
| GI | 77460000 |
| Locus Tag | Pfl01_3778 |
| Description | cytosine permease |
| Strain | Pseudomonas putida ND6 |
| GI | 395449425 |
| Locus Tag | YSA_10692 |
| Description | cytosine permease |
| Strain | Pseudomonas aeruginosa 2192 |
| GI | 254243536 |
| Locus Tag | PA2G_04354 |
| Description | cytosine permease |