| E | AAA | e3iz3E1 | A: beta barrels | X: Lipocalins/Streptavidin | H: Zn-dependent exopeptidases | T: Zn-dependent exopeptidases | F: AAA | ECOD (v294.2) |
| D | AAA | e3iz3D1 | A: beta barrels | X: Lipocalins/Streptavidin | H: Zn-dependent exopeptidases | T: Zn-dependent exopeptidases | F: AAA | ECOD (v294.2) |
| C | FRB_dom | e3iz3C1 | A: beta barrels | X: Ribonuclease H-like | H: Ribonuclease H-like | T: Ribonuclease H-like | F: FRB_dom | ECOD (v294.2) |
| B | YonK | e3iz3B1 | A: beta barrels | X: DP domain | H: DP domain | T: DP domain | F: YonK | ECOD (v294.2) |
| A | Reov_VP3_MTase1 | e3iz3A3 | A: beta barrels | X: Metallothionein | H: P-loop domains-related | T: P-loop containing nucleoside triphosphate hydrolases | F: Reov_VP3_MTase1 | ECOD (v294.2) |
| A | FeoB_N | e3iz3A4 | A: beta barrels | X: Metallothionein | H: P-loop domains-related | T: P-loop containing nucleoside triphosphate hydrolases | F: FeoB_N | ECOD (v294.2) |
| A | Reov_VP3_GTase | e3iz3A1 | A: beta barrels | X: Reovirus guanylyltransferase (GTase) | H: Reovirus guanylyltransferase (GTase) | T: Reovirus guanylyltransferase (GTase) | F: Reov_VP3_GTase | ECOD (v294.2) |
| A | Reovirus_bridge | e3iz3A2 | A: beta barrels | X: CCCH zinc finger | H: CCCH zinc finger | T: CCCH zinc finger | F: Reovirus_bridge | ECOD (v294.2) |