| A4SRG9 | CYSD_AERS4 | Aeromonas salmonicida (strain A449) | cysD ASA_3523 | Detail |
| B8D9K2 | CYSD_BUCA5 | Buchnera aphidicola subsp. Acyrthosiphon pisum (strain 5A) | cysD BUAP5A_417 | Detail |
| Q48ED3 | CYSD_PSE14 | Pseudomonas savastanoi pv. phaseolicola (strain 1448A / Race 6) (Pseudomonas syringae pv. phaseolicola (strain 1448A / Race 6)) | cysD PSPPH_4133 | Detail |
| B8D7V3 | CYSN_BUCAT | Buchnera aphidicola subsp. Acyrthosiphon pisum (strain Tuc7) | cysN BUAPTUC7_417 | Detail |
| Q8X7X7 | CYSN_ECO57 | Escherichia coli O157:H7 | cysN Z4059 ECs3605 | Detail |
| A2SQD1 | DNAG_METLZ | Methanocorpusculum labreanum (strain ATCC 43576 / DSM 4855 / Z) | dnaG Mlab_0361 | Detail |
| Q43870 | APS2_ARATH | Arabidopsis thaliana (Mouse-ear cress) | APS2 ASA1 MET3-1 At1g19920 F6F9.2 | Detail |
| O33581 | CYSN_RHITR | Rhizobium tropici | cysN | Detail |
| B5FTS9 | CYSN_SALDC | Salmonella dublin (strain CT_02021853) | cysN SeD_A3244 | Detail |
| Q8Z470 | CYSN_SALTI | Salmonella typhi | cysN STY3059 t2835 | Detail |