| KEGG ID | KO | Definition |
| afe:Lferr_0587 | K01903 | succinyl-CoA synthetase, beta subunit |
| afr:AFE_0425 | K01903 | succinyl-CoA synthase, beta subunit |
| acu:Atc_2439 | K01903 | Succinyl-CoA ligase ADP-forming beta chain |
| acz:Acaty_c2278 | K01903 | Succinyl-CoA ligase (ADP-forming) beta chain |
| afi:Acife_0628 | K01903 | Succinyl-CoA ligase (ADP-forming) subunit beta |