| F | SIR2_1st | e3pkiF2 | 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 | e3pkiF3 | A: few secondary structure elements | X: Rubredoxin-like | H: Rubredoxin-related | T: Rubredoxin-related | F: KOG1905 | ECOD (1.6) |
| E | SIR2_1st | e3pkiE2 | 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 | e3pkiE3 | A: few secondary structure elements | X: Rubredoxin-like | H: Rubredoxin-related | T: Rubredoxin-related | F: KOG1905 | ECOD (1.6) |
| D | SIR2_1st | e3pkiD2 | 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 | e3pkiD3 | A: few secondary structure elements | X: Rubredoxin-like | H: Rubredoxin-related | T: Rubredoxin-related | F: KOG1905 | ECOD (1.6) |
| C | SIR2_1st | e3pkiC1 | 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 | e3pkiC2 | A: few secondary structure elements | X: Rubredoxin-like | H: Rubredoxin-related | T: Rubredoxin-related | F: KOG1905 | ECOD (1.6) |
| B | SIR2_1st | e3pkiB2 | 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 | e3pkiB3 | A: few secondary structure elements | X: Rubredoxin-like | H: Rubredoxin-related | T: Rubredoxin-related | F: KOG1905 | ECOD (1.6) |
| A | SIR2_1st | e3pkiA1 | 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 | e3pkiA2 | A: few secondary structure elements | X: Rubredoxin-like | H: Rubredoxin-related | T: Rubredoxin-related | F: KOG1905 | ECOD (1.6) |