| Strain | Pseudomonas aeruginosa PAO1 |
| GI | 15595511 |
| Locus Tag | PA0314 |
| Description | L-cysteine transporter of ABC system FliY |
| Strain | Pseudomonas fulva 12-X |
| GI | 333900601 |
| Locus Tag | Psefu_2414 |
| Description | family 3 extracellular solute-binding protein |
| Strain | Hahella chejuensis KCTC 2396 |
| GI | 83646475 |
| Locus Tag | HCH_03752 |
| Description | cystine transporter subunit |