| D | DNA_polI_exo1 | e4cblD3 | A: beta barrels | X: Transmembrane heme-binding four-helical bundle | H: Anticodon-binding domain of Class II aaRS | T: Anticodon-binding domain of Class II aaRS | F: DNA_polI_exo1 | ECOD (v294.2) |
| D | | e4cblD1 | A: beta barrels | X: P-loop domains-like | H: ARM repeat | T: ARM repeat | F: | ECOD (v294.2) |
| C | | e4cblC3 | A: beta barrels | X: Transmembrane heme-binding four-helical bundle | H: P-loop domains-related | T: P-loop containing nucleoside triphosphate hydrolases | F: | ECOD (v294.2) |
| C | Spectrin | e4cblC1 | A: beta barrels | X: Spectrin repeat-like | H: Spectrin repeat | T: Spectrin repeat | F: Spectrin | ECOD (v294.2) |
| B | | e4cblB3 | A: beta barrels | X: Transmembrane heme-binding four-helical bundle | H: P-loop domains-related | T: P-loop containing nucleoside triphosphate hydrolases | F: | ECOD (v294.2) |
| B | | e4cblB2 | A: beta barrels | X: P-loop domains-like | H: ARM repeat | T: ARM repeat | F: | ECOD (v294.2) |
| A | | e4cblA3 | A: beta barrels | X: Transmembrane heme-binding four-helical bundle | H: P-loop domains-related | T: P-loop containing nucleoside triphosphate hydrolases | F: | ECOD (v294.2) |
| A | | e4cblA1 | A: beta barrels | X: P-loop domains-like | H: ARM repeat | T: ARM repeat | F: | ECOD (v294.2) |