| Strain | Pseudomonas aeruginosa PAO1 |
| GI | 15595511 |
| Locus Tag | PA0314 |
| Description | L-cysteine transporter of ABC system FliY |
| Strain | Pseudomonas resinovorans NBRC 106553 |
| GI | 512615851 |
| Locus Tag | PCA10_01980 |
| Description | cystine ABC transporter substrate-binding protein |
| Strain | Pseudomonas syringae pv. tomato str. DC3000 |
| GI | 28872292 |
| Locus Tag | PSPTO_5180 |
| Description | cystine transporter subunit |