| Strain | Pseudomonas aeruginosa PAO1 |
| GI | 15595511 |
| Locus Tag | PA0314 |
| Description | L-cysteine transporter of ABC system FliY |
| Strain | Pseudomonas stutzeri DSM 10701 |
| GI | 397686609 |
| Locus Tag | PSJM300_07480 |
| Description | cystine transporter subunit |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83646475 |
| Locus Tag | HCH_03752 |
| Description | cystine transporter subunit |