| A | | e3aibA1 | A: MocoBD/DmpA-related | X: MocoBD/DmpA-related | H: Retrovirus capsid protein-C | T: FRB_dom | F: | ECOD (20:10:01) |
| B | | e3aibB1 | A: MocoBD/DmpA-related | X: MocoBD/DmpA-related | H: Retrovirus capsid protein-C | T: FRB_dom | F: | ECOD (20:10:01) |
| C | | e3aibC1 | A: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | X: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | H: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | T: ANAPC4 | F: | ECOD (20:10:01) |
| D | | e3aibD1 | A: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | X: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | H: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | T: ANAPC4 | F: | ECOD (20:10:01) |
| E [auth G] | | e3aibG1 | A: MocoBD/DmpA-related | X: MocoBD/DmpA-related | H: Retrovirus capsid protein-C | T: FRB_dom | F: | ECOD (20:10:01) |
| F [auth E] | | e3aibE1 | A: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | X: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | H: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | T: ANAPC4 | F: | ECOD (20:10:01) |
| G [auth F] | | e3aibF1 | A: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | X: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | H: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | T: ANAPC4 | F: | ECOD (20:10:01) |
| H | | e3aibH1 | A: Alpha helical domain of ribonucleotide reductases | X: Alpha helical domain of ribonucleotide reductases | H: Alpha helical domain of ribonucleotide reductases | T: OTCace_N | F: | ECOD (20:10:01) |