| F | PBP | e3msyF1 | A: a/b three-layered sandwiches | X: Lipocalins/Streptavidin | H: Immunoglobulin-related | T: PEBP-like | F: PBP | ECOD (v294.1) |
| E | | e3msyE5 | A: a/b three-layered sandwiches | X: DEATH domain | H: Ten stranded beta/alpha barrel | T: Ten stranded beta/alpha barrel | F: | ECOD (v294.1) |
| D | PBP | e3msyD1 | A: a/b three-layered sandwiches | X: Lipocalins/Streptavidin | H: Immunoglobulin-related | T: PEBP-like | F: PBP | ECOD (v294.1) |
| C | PBP | e3msyC1 | A: a/b three-layered sandwiches | X: Lipocalins/Streptavidin | H: Immunoglobulin-related | T: PEBP-like | F: PBP | ECOD (v294.1) |
| B | PBP | e3msyB1 | A: a/b three-layered sandwiches | X: Lipocalins/Streptavidin | H: Immunoglobulin-related | T: PEBP-like | F: PBP | ECOD (v294.1) |
| A | PBP | e3msyA1 | A: a/b three-layered sandwiches | X: Lipocalins/Streptavidin | H: Immunoglobulin-related | T: PEBP-like | F: PBP | ECOD (v294.1) |