| F | SIR2_1st | e6xv6F1 | A: a/b three-layered sandwiches | X: Rossmann-like | H: Rossmann-related | T: DHS-like NAD/FAD-binding domain | F: SIR2_1st | ECOD (1.6) |
| F | KOG1905 | e6xv6F2 | A: few secondary structure elements | X: Rubredoxin-like | H: Rubredoxin-related | T: Rubredoxin-related | F: KOG1905 | ECOD (1.6) |
| E | SIR2_1st | e6xv6E1 | A: a/b three-layered sandwiches | X: Rossmann-like | H: Rossmann-related | T: DHS-like NAD/FAD-binding domain | F: SIR2_1st | ECOD (1.6) |
| E | KOG1905 | e6xv6E2 | A: few secondary structure elements | X: Rubredoxin-like | H: Rubredoxin-related | T: Rubredoxin-related | F: KOG1905 | ECOD (1.6) |
| D | SIR2_1st | e6xv6D2 | A: a/b three-layered sandwiches | X: Rossmann-like | H: Rossmann-related | T: DHS-like NAD/FAD-binding domain | F: SIR2_1st | ECOD (1.6) |
| D | KOG1905 | e6xv6D1 | A: few secondary structure elements | X: Rubredoxin-like | H: Rubredoxin-related | T: Rubredoxin-related | F: KOG1905 | ECOD (1.6) |
| C | SIR2_1st | e6xv6C1 | A: a/b three-layered sandwiches | X: Rossmann-like | H: Rossmann-related | T: DHS-like NAD/FAD-binding domain | F: SIR2_1st | ECOD (1.6) |
| C | KOG1905 | e6xv6C2 | A: few secondary structure elements | X: Rubredoxin-like | H: Rubredoxin-related | T: Rubredoxin-related | F: KOG1905 | ECOD (1.6) |
| B | SIR2_1st | e6xv6B1 | A: a/b three-layered sandwiches | X: Rossmann-like | H: Rossmann-related | T: DHS-like NAD/FAD-binding domain | F: SIR2_1st | ECOD (1.6) |
| B | KOG1905 | e6xv6B2 | A: few secondary structure elements | X: Rubredoxin-like | H: Rubredoxin-related | T: Rubredoxin-related | F: KOG1905 | ECOD (1.6) |
| A | SIR2_1st | e6xv6A1 | A: a/b three-layered sandwiches | X: Rossmann-like | H: Rossmann-related | T: DHS-like NAD/FAD-binding domain | F: SIR2_1st | ECOD (1.6) |
| A | KOG1905 | e6xv6A2 | A: few secondary structure elements | X: Rubredoxin-like | H: Rubredoxin-related | T: Rubredoxin-related | F: KOG1905 | ECOD (1.6) |