| A | Fer4+Fer4_7 | e7ak8A1 | A: a/b three-layered sandwiches | X: RNase A-like | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: Fer4+Fer4_7 | ECOD (v294.1) |
| B | Fer4+Fer4_7 | e7ak8B1 | A: a/b three-layered sandwiches | X: RNase A-like | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: Fer4+Fer4_7 | ECOD (v294.1) |
| C | Fer4+Fer4_7 | e7ak8C1 | A: a/b three-layered sandwiches | X: RNase A-like | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: Fer4+Fer4_7 | ECOD (v294.1) |
| D | Fer4+Fer4_7 | e7ak8D1 | A: a/b three-layered sandwiches | X: RNase A-like | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: Fer4+Fer4_7 | ECOD (v294.1) |
| E | Fer4+Fer4_7 | e7ak8E1 | A: a/b three-layered sandwiches | X: RNase A-like | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: Fer4+Fer4_7 | ECOD (v294.1) |
| F | Fer4+Fer4_7 | e7ak8F1 | A: a/b three-layered sandwiches | X: RNase A-like | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: Fer4+Fer4_7 | ECOD (v294.1) |