| C [auth L] | C1-set | e7ttmL2 | A: beta sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: C1-set | ECOD (1.6) |
| C [auth L] | V-set_3 | e7ttmL1 | A: beta sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: V-set_3 | ECOD (1.6) |
| B [auth H] | C1-set_1 | e7ttmH1 | A: beta sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: C1-set_1 | ECOD (1.6) |
| B [auth H] | V-set_12 | e7ttmH2 | A: beta sandwiches | X: Immunoglobulin-like beta-sandwich | H: Immunoglobulin-related | T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like | F: V-set_12 | ECOD (1.6) |
| A | Spike_rec_bind | e7ttmA1 | A: a+b three layers | X: Coronavirus spike protein receptor-binding domain (From Homology) | H: Coronavirus spike protein receptor-binding domain | T: Beta-coronavirus spike protein receptor-binding domain | F: Spike_rec_bind | ECOD (1.6) |