| F | PBP | e3mqgF1 | A: a/b three-layered sandwiches | X: Lipocalins/Streptavidin | H: Immunoglobulin-related | T: PEBP-like | F: PBP | ECOD (v294.1) |
| E | PBP | e3mqgE1 | A: a/b three-layered sandwiches | X: Lipocalins/Streptavidin | H: Immunoglobulin-related | T: PEBP-like | F: PBP | ECOD (v294.1) |
| D | PBP | e3mqgD1 | A: a/b three-layered sandwiches | X: Lipocalins/Streptavidin | H: Immunoglobulin-related | T: PEBP-like | F: PBP | ECOD (v294.1) |
| C | PBP | e3mqgC1 | A: a/b three-layered sandwiches | X: Lipocalins/Streptavidin | H: Immunoglobulin-related | T: PEBP-like | F: PBP | ECOD (v294.1) |
| B | PBP | e3mqgB1 | A: a/b three-layered sandwiches | X: Lipocalins/Streptavidin | H: Immunoglobulin-related | T: PEBP-like | F: PBP | ECOD (v294.1) |
| A | TetR_N | e3mqgA1 | A: a/b three-layered sandwiches | X: Globin-like | H: Globin-like | T: Globin-like | F: TetR_N | ECOD (v294.1) |