| I | Flavin_Reduct | e3n4dI1 | A: beta barrels | X: Lipocalins/Streptavidin | H: Zn-dependent exopeptidases | T: Zn-dependent exopeptidases | F: Flavin_Reduct | ECOD (v294.2) |
| H | Flavin_Reduct | e3n4dH1 | A: beta barrels | X: Lipocalins/Streptavidin | H: Zn-dependent exopeptidases | T: Zn-dependent exopeptidases | F: Flavin_Reduct | ECOD (v294.2) |
| G | Flavin_Reduct | e3n4dG1 | A: beta barrels | X: Lipocalins/Streptavidin | H: Zn-dependent exopeptidases | T: Zn-dependent exopeptidases | F: Flavin_Reduct | ECOD (v294.2) |
| F | Flavin_Reduct | e3n4dF1 | A: beta barrels | X: Lipocalins/Streptavidin | H: Zn-dependent exopeptidases | T: Zn-dependent exopeptidases | F: Flavin_Reduct | ECOD (v294.2) |
| E | Flavin_Reduct | e3n4dE1 | A: beta barrels | X: Lipocalins/Streptavidin | H: Zn-dependent exopeptidases | T: Zn-dependent exopeptidases | F: Flavin_Reduct | ECOD (v294.2) |
| D | Flavin_Reduct | e3n4dD1 | A: beta barrels | X: Lipocalins/Streptavidin | H: Zn-dependent exopeptidases | T: Zn-dependent exopeptidases | F: Flavin_Reduct | ECOD (v294.2) |
| C | Flavin_Reduct | e3n4dC1 | A: beta barrels | X: Lipocalins/Streptavidin | H: Zn-dependent exopeptidases | T: Zn-dependent exopeptidases | F: Flavin_Reduct | ECOD (v294.2) |
| B | Flavin_Reduct | e3n4dB1 | A: beta barrels | X: Lipocalins/Streptavidin | H: Zn-dependent exopeptidases | T: Zn-dependent exopeptidases | F: Flavin_Reduct | ECOD (v294.2) |
| A | LacAB_rpiB | e3n4dA1 | A: beta barrels | X: Thioredoxin-like | H: Thioredoxin-like | T: Thioredoxin-like | F: LacAB_rpiB | ECOD (v294.2) |