| B5FGJ9 | CYSN_ALIFM | Aliivibrio fischeri (strain MJ11) (Vibrio fischeri) | cysN VFMJ11_0308 | Detail |
| Q64VQ9 | CYSN_BACFR | Bacteroides fragilis (strain YCH46) | cysN BF1669 | Detail |
| B4RTW4 | CYSN_ALTMD | Alteromonas mediterranea (strain DSM 17117 / CIP 110805 / LMG 28347 / Deep ecotype) | cysN MADE_1006725 | Detail |
| Q8AAP9 | CYSN_BACTN | Bacteroides thetaiotaomicron (strain ATCC 29148 / DSM 2079 / NCTC 10582 / E50 / VPI-5482) | cysN BT_0415 | Detail |
| Q0TEA7 | CYSN_ECOL5 | Escherichia coli O6:K15:H31 (strain 536 / UPEC) | cysN ECP_2733 | Detail |
| Q7MPF2 | CYSN_VIBVY | Vibrio vulnificus (strain YJ016) | cysN VV0412 | Detail |
| A8FXJ5 | CYSD1_SHESH | Shewanella sediminis (strain HAW-EB3) | cysD1 Ssed_2961 | Detail |
| B1IUS7 | CYSD_ECOLC | Escherichia coli (strain ATCC 8739 / DSM 1576 / Crooks) | cysD EcolC_0960 | Detail |
| Q6LM68 | CYSD_PHOPR | Photobacterium profundum (strain SS9) | cysD PBPRA3311 | Detail |
| A1KI72 | CYSD_MYCBP | Mycobacterium bovis (strain BCG / Pasteur 1173P2) | cysD BCG_1344 | Detail |