| Q6D1A2 | CYSI_PECAS | Pectobacterium atrosepticum (strain SCRI 1043 / ATCC BAA-672) (Erwinia carotovora subsp. atroseptica) | cysI ECA3546 | Detail |
| Q8Z458 | CYSJ_SALTI | Salmonella typhi | cysJ STY3076 t2849 | Detail |
| A9LZ72 | CYSI_NEIM0 | Neisseria meningitidis serogroup C (strain 053442) | cysI NMCC_1069 | Detail |
| P54934 | BISC_RHOSH | Rhodobacter sphaeroides (Rhodopseudomonas sphaeroides) | | Detail |
| A8H094 | CYSI_SHEPA | Shewanella pealeana (strain ATCC 700345 / ANG-SQ1) | cysI Spea_0654 | Detail |
| A0KTH5 | CYSI_SHESA | Shewanella sp. (strain ANA-3) | cysI Shewana3_0856 | Detail |
| Q9FDN7 | FPRA_MOOTA | Moorella thermoacetica (strain ATCC 39073 / JCM 9320) | fprA Moth_1287 | Detail |
| Q65T53 | CYSJ_MANSM | Mannheimia succiniciproducens (strain MBEL55E) | cysJ MS1250 | Detail |
| P0C0B2 | CYSI_BUCAP | Buchnera aphidicola subsp. Schizaphis graminum (strain Sg) | cysI BUsg_412 | Detail |
| C0Z9X2 | CYSI_BREBN | Brevibacillus brevis (strain 47 / JCM 6285 / NBRC 100599) | cysI BBR47_58490 | Detail |