| KEGG ID | KO | Definition |
| crp:CRP_100 | K01903 | succinyl-CoA synthetase beta subunit |
| cru:A33U_0129 | K01903 | succinyl-CoA synthetase beta subunit |
| crc:A33Y_0129 | K01903 | succinyl-CoA synthetase beta subunit |
| crt:A355_0119 | K01903 | succinyl-CoA synthetase beta subunit |
| crh:A353_0131 | K01903 | succinyl-CoA synthetase beta subunit |
| crv:A357_0119 | K01903 | succinyl-CoA synthetase beta subunit |
| cri:CRDC_00640 | K01903 | succinyl-CoA synthetase subunit beta |