| A | SIR2_1st | e4bn5A1 | 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 | SIR2_2nd_1 | e4bn5A2 | A: few secondary structure elements | X: Rubredoxin-like | H: Rubredoxin-related | T: Rubredoxin-related | F: SIR2_2nd_1 | ECOD (1.6) |
| G | SIR2_1st | e4bn5G1 | 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) |
| G | SIR2_2nd_1 | e4bn5G2 | A: few secondary structure elements | X: Rubredoxin-like | H: Rubredoxin-related | T: Rubredoxin-related | F: SIR2_2nd_1 | ECOD (1.6) |
| H | SIR2_1st | e4bn5H1 | 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) |
| H | SIR2_2nd_1 | e4bn5H2 | A: few secondary structure elements | X: Rubredoxin-like | H: Rubredoxin-related | T: Rubredoxin-related | F: SIR2_2nd_1 | ECOD (1.6) |
| J | SIR2_1st | e4bn5J1 | 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) |
| J | SIR2_2nd_1 | e4bn5J2 | A: few secondary structure elements | X: Rubredoxin-like | H: Rubredoxin-related | T: Rubredoxin-related | F: SIR2_2nd_1 | ECOD (1.6) |
| K | SIR2_1st | e4bn5K1 | 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) |
| K | SIR2_2nd_1 | e4bn5K2 | A: few secondary structure elements | X: Rubredoxin-like | H: Rubredoxin-related | T: Rubredoxin-related | F: SIR2_2nd_1 | ECOD (1.6) |
| L | SIR2_1st | e4bn5L1 | 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) |
| L | SIR2_2nd_1 | e4bn5L2 | A: few secondary structure elements | X: Rubredoxin-like | H: Rubredoxin-related | T: Rubredoxin-related | F: SIR2_2nd_1 | ECOD (1.6) |
| I | SIR2_1st | e4bn5I1 | 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) |
| I | SIR2_2nd_1 | e4bn5I2 | A: few secondary structure elements | X: Rubredoxin-like | H: Rubredoxin-related | T: Rubredoxin-related | F: SIR2_2nd_1 | ECOD (1.6) |
| F | SIR2_1st | e4bn5F1 | 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 | SIR2_2nd_1 | e4bn5F2 | A: few secondary structure elements | X: Rubredoxin-like | H: Rubredoxin-related | T: Rubredoxin-related | F: SIR2_2nd_1 | ECOD (1.6) |
| E | SIR2_1st | e4bn5E1 | 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 | SIR2_2nd_1 | e4bn5E2 | A: few secondary structure elements | X: Rubredoxin-like | H: Rubredoxin-related | T: Rubredoxin-related | F: SIR2_2nd_1 | ECOD (1.6) |
| D | SIR2_1st | e4bn5D1 | 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 | SIR2_2nd_1 | e4bn5D2 | A: few secondary structure elements | X: Rubredoxin-like | H: Rubredoxin-related | T: Rubredoxin-related | F: SIR2_2nd_1 | ECOD (1.6) |
| C | SIR2_1st | e4bn5C1 | 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 | SIR2_2nd_1 | e4bn5C2 | A: few secondary structure elements | X: Rubredoxin-like | H: Rubredoxin-related | T: Rubredoxin-related | F: SIR2_2nd_1 | ECOD (1.6) |
| B | SIR2_1st | e4bn5B1 | 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 | SIR2_2nd_1 | e4bn5B2 | A: few secondary structure elements | X: Rubredoxin-like | H: Rubredoxin-related | T: Rubredoxin-related | F: SIR2_2nd_1 | ECOD (1.6) |