| F | SIR2_1st | e6xvgF2 | 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 | e6xvgF1 | A: few secondary structure elements | X: Rubredoxin-like | H: Rubredoxin-related | T: Rubredoxin-related | F: KOG1905 | ECOD (1.6) | 
 | E | SIR2_1st | e6xvgE2 | 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 | e6xvgE1 | A: few secondary structure elements | X: Rubredoxin-like | H: Rubredoxin-related | T: Rubredoxin-related | F: KOG1905 | ECOD (1.6) | 
 | D | SIR2_1st | e6xvgD1 | 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 | e6xvgD2 | A: few secondary structure elements | X: Rubredoxin-like | H: Rubredoxin-related | T: Rubredoxin-related | F: KOG1905 | ECOD (1.6) | 
 | C | SIR2_1st | e6xvgC2 | 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 | e6xvgC1 | A: few secondary structure elements | X: Rubredoxin-like | H: Rubredoxin-related | T: Rubredoxin-related | F: KOG1905 | ECOD (1.6) | 
 | B | SIR2_1st | e6xvgB1 | 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 | e6xvgB2 | A: few secondary structure elements | X: Rubredoxin-like | H: Rubredoxin-related | T: Rubredoxin-related | F: KOG1905 | ECOD (1.6) | 
 | A | SIR2_1st | e6xvgA1 | 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 | e6xvgA2 | A: few secondary structure elements | X: Rubredoxin-like | H: Rubredoxin-related | T: Rubredoxin-related | F: KOG1905 | ECOD (1.6) |